阅读说明：本技术 用于磁悬浮车辆的悬浮控制器及磁悬浮车辆 (Suspension controller for magnetic suspension vehicle and magnetic suspension vehicle ) 是由 崔玉萌 崔鹏 王永刚 王峰 杨君 李颖华 于 2021-03-16 设计创作，主要内容包括：本申请实施例提供了一种用于磁悬浮车辆的悬浮控制器及磁悬浮车辆。悬浮控制器包括：箱体；散热器,设置在所述箱体的后壁的外侧；斩波模块,所述斩波模块采用金属-氧化物半导体场效应晶体管型MOSFET斩波模块,所述斩波模块固定在所述箱体的后壁的内侧,且与所述散热器相背设置；斩波模块驱动板,紧贴固定在所述斩波模块朝向所述箱体内部的一侧。磁悬浮车辆包括上述悬浮控制器。本申请实施例解决了传统的悬浮控制器,因采用IGBT斩波模块斩波发热量较大,导致能耗较大,以及散热设备较多的技术问题。(The embodiment of the application provides a suspension controller for a magnetic suspension vehicle and the magnetic suspension vehicle. The levitation controller includes: a box body; the radiator is arranged on the outer side of the rear wall of the box body; the chopping module is a metal-oxide semiconductor field effect transistor (MOSFET) chopping module, is fixed on the inner side of the rear wall of the box body and is arranged opposite to the radiator; and the chopping module driving plate is tightly attached and fixed on one side of the chopping module facing the inside of the box body. The magnetic levitation vehicle comprises the levitation controller. The embodiment of the application solves the technical problems that the traditional suspension controller has larger energy consumption and more heat dissipation equipment due to larger chopping heat productivity of the IGBT chopping module.)

1. A levitation controller for a magnetic levitation vehicle, comprising:

a box body;

the radiator is arranged on the outer side of the rear wall of the box body;

the chopping module is a metal-oxide semiconductor field effect transistor (MOSFET) chopping module, is fixed on the inner side of the rear wall of the box body and is arranged opposite to the radiator;

and the chopping module driving plate is tightly attached and fixed on one side of the chopping module facing the inside of the box body.

2. The levitation controller of claim 1, wherein the chopping module is a plurality of chopping modules, each of the chopping modules being spaced apart from one another from top to bottom;

the radiator comprises a plurality of radiating fins, and the radiating fins are arranged at intervals in a mode of being parallel to the lower bottom of the box body;

the width of the radiating fins in the transverse direction is larger than that of the chopping module, and the chopping module is located in the middle of the position, opposite to the radiating fins, of the inner side of the rear wall of the box body.

3. The levitation controller as recited in claim 2, wherein a ratio of a width of the heat dissipation fin in the transverse direction to a width of the rear wall of the case ranges from one third to one half.

4. The levitation controller of claim 1, further comprising:

a capacitor bank cooperating with the chopping module, the capacitor bank including a plurality of thin film capacitors;

the front support frame is fixed with the inner side of the front wall of the box body, and each thin film capacitor is fixed with the front support frame and arranged from top to bottom at intervals, so that the thin film capacitor is arranged in front of the chopping module in an overhead mode;

the end face of the rear support frame is in a Z shape, a first transverse arm of the rear support frame is fixed with the chopping module, the outer side of a second transverse arm of the rear support frame is fixed with the negative electrode of the thin film capacitor, and the chopping module driving plate are located between the inner side of the second transverse arm of the rear support frame and the rear wall of the box body;

the rear support frame is used for keeping the film capacitor to be located in front of the chopping module in an overhead mode and keeping the distance between the film capacitor and the chopping module, and is used for grounding the negative electrode of the film capacitor.

5. The levitation controller of claim 1, further comprising a power module for receiving the first high voltage direct current and outputting a low voltage direct current, the power module comprising:

the first power supply modules of the two mutually redundant power supply modules are used for outputting first low-voltage direct current required by the chopper module driving board;

the second power supply modules are used for outputting second low-voltage direct current required by the detection board of the suspension controller;

and the two power supply modules are redundant mutually and are used for supplying third power supply modules, and the third power supply modules are used for outputting third low-voltage direct current required by the external suspension sensor.

6. The levitation controller of claim 5, further comprising:

the suspension control computer is used for generating a control quantity and outputting the control quantity to the chopper module;

the computer first power supply module is used for receiving the first high-voltage direct current and outputting the low-voltage direct current required by the suspension control computer;

the computer second power supply module is used for receiving second high-voltage direct current and outputting low-voltage direct current required by the suspension control computer;

the first power supply module of the computer and the second power supply module of the computer are redundant.

7. The levitation controller of claim 6, further comprising a power failure output circuit, the power failure output circuit comprising:

the branch LED circuits are in one-to-one correspondence with the power supply modules and are connected with the corresponding power supply modules; the power supply module comprises a power supply module first power supply module, a power supply module second power supply module, a third power supply module, a computer first power supply module and a computer second power supply module;

when the power supply module works normally, the corresponding branch light-emitting diode circuit is switched on, and the light-emitting diode of the branch light-emitting diode circuit is bright; when the power supply module fails, the corresponding branch light-emitting diode circuit is disconnected, and the light-emitting diodes of the branch light-emitting diode circuit are turned off.

8. The levitation controller of claim 7, wherein the power failure output circuit further comprises:

the main circuit light-emitting diode circuit is respectively connected with each branch circuit light-emitting diode circuit;

when all the power supply modules work normally, the main circuit light-emitting diode circuit is switched on, and the light-emitting diodes of the main circuit light-emitting diode circuit; when any power supply module fails, the main circuit light-emitting diode circuit is disconnected, and the light-emitting diode of the main circuit light-emitting diode circuit is turned off.

9. The levitation controller as recited in claim 6, further comprising a plurality of temperature sensors, each of the temperature sensors being in communication with the levitation control computer, each of the temperature sensors having a respective preset pre-warning temperature, the temperature sensors performing pre-warning and transmitting a temperature pre-warning signal to the levitation control computer when the temperature of the temperature sensor reaches or exceeds the preset pre-warning temperature; each of the temperature sensors includes:

first and second temperature sensors disposed around the first and second groups of switching devices on the heat sink;

the third temperature sensor is arranged in a common heating area of the suspension control computer and the power supply module;

the levitation control computer further configured to:

under the condition that the first temperature sensor gives an early warning and the third temperature sensor is normal, judging that the first switch device group has a fault;

judging the second switch device group to have a fault under the condition that the second temperature sensor gives an early warning and the third temperature sensor is normal;

under the condition that the first temperature sensor, the second temperature sensor and the third temperature sensor perform early warning simultaneously, judging the fault of the power supply module;

and under the condition that the third temperature sensor gives an early warning and the first temperature sensor and the second temperature sensor are normal, judging the fault of the suspension control computer.

10. The levitation controller of claim 9, wherein each of the temperature sensors further comprises:

the fourth temperature sensor is arranged in a common heating area of the power supply module and the first high-voltage power supply filter of the suspension controller;

the fifth temperature sensor is arranged in a common heating area of a second high-voltage power supply filter of the suspension controller and the contactor;

the sixth temperature sensor is arranged in a common heating area of the charging resistor, the contactor and the output reactor of the suspension controller;

the levitation control computer further configured to:

under the condition that the fourth temperature sensor gives an early warning and the first temperature sensor, the second temperature sensor and the third temperature sensor are normal, judging that the first high-voltage power supply filter has a fault;

judging the fault of the second high-voltage power supply filter under the condition that the fifth temperature sensor gives an early warning and the sixth temperature sensor is normal;

and under the condition that the fifth temperature sensor and the sixth temperature sensor simultaneously give an early warning, judging the fault of the contactor.

11. The levitation controller of claim 10, wherein each of the temperature sensors further comprises:

the seventh temperature sensor is arranged in a common heating area of the output reactor, the output current detection plate and the capacitor bank of the suspension controller;

the eighth temperature sensor is arranged in a common heating area of an output reactor and an input voltage detection plate of the suspension controller;

the ninth temperature sensor is arranged in a common heating area of the capacitor bank of the suspension controller, the fast melting and input current detection plate;

the levitation control computer further configured to:

judging the charging resistor fault under the condition that the sixth temperature sensor gives an early warning, and the fifth temperature sensor, the seventh temperature sensor and the eighth temperature sensor are normal;

under the condition that the sixth temperature sensor, the seventh temperature sensor and the eighth temperature sensor simultaneously give an early warning, judging the fault of the output reactor;

judging the fault of the input voltage detection plate under the condition that the eighth temperature sensor gives an early warning and the seventh temperature sensor and the eighth temperature sensor are normal;

judging the fault of the output current detection plate under the condition that the seventh temperature sensor gives an early warning and the sixth temperature sensor and the eighth temperature sensor are normal;

judging the fault of the thin film capacitor under the condition that the seventh temperature sensor and the ninth temperature sensor simultaneously give an early warning;

and under the condition of early warning of the ninth temperature sensor, judging the fault of the input voltage detection plate.

12. The levitation controller as recited in claim 11, further comprising a plurality of monitoring sensors, each monitoring sensor being in communication with the levitation control computer, each monitoring sensor sending monitoring data to the levitation control computer;

the levitation control computer further configured to:

and judging that the suspension controller is in a sub-health state and carrying out corresponding early warning when judging that any preset early warning condition is met according to the monitoring data and the preset early warning conditions of each monitoring sensor.

13. The levitation controller of claim 12, wherein the pre-set pre-warning condition comprises one or more of:

detecting that the current exceeds a predetermined overload threshold;

detecting that the voltage exceeds an early warning threshold;

detecting that the current difference between the two points exceeds a preset current difference threshold value;

detecting that the temperature exceeds a predetermined temperature;

detecting that the electromagnet collides with the track;

detecting that the position of one probe of the suspension gap sensor exceeds a preset tolerance range;

detecting that the position of one probe of the acceleration sensor exceeds a preset tolerance range;

detecting that one or more CPUs of the levitation control computer are malfunctioning;

a failure of one or more of the power supply modules is detected.

14. A magnetic levitation vehicle, comprising:

the suspension electromagnets are arranged at the bottom of the magnetic suspension vehicle, and each row of suspension electromagnets comprises a plurality of suspension electromagnet groups arranged at intervals;

the levitation controller of any one of claims 1-13, wherein the levitation controllers correspond to the sets of levitation electromagnets one-to-one;

the first power supply end of the suspension controller is connected with one end of a power supply main line of the magnetic suspension vehicle through the first air switch, and the first power supply end supplies power to each suspension controller;

the second power supply end of the suspension controller is connected with the other end of a power supply main line of the magnetic suspension vehicle through the second air switch, and the second power supply end supplies power to each suspension controller.

Technical Field

The application relates to the technical field of magnetic suspension, in particular to a suspension controller for a magnetic suspension vehicle and the magnetic suspension vehicle.

Background

In order to meet the requirements of low noise, high comfort level and high adaptability, medium-low speed magnetic suspension lines are emerging at home and abroad. The suspension system generally comprises a suspension electromagnet, a suspension controller and a suspension sensor. The suspension electromagnet converts electricity into force to provide suspension force for the vehicle; because the vehicle suspension system is an unstable system and needs to be controlled, the suspension controller needs to adjust the suspension force of the vehicle in real time; the levitation sensor can provide levitation gap and acceleration signals required by the closed loop for the levitation control system, and other signals are obtained by a sensor or observer inside the levitation controller.

Magnetic levitation vehicles are emerging traffic modes, and the technology is developing vigorously. The technical maturity of the suspension system, which is a special system of the magnetic suspension vehicle, particularly a core part and a suspension controller thereof, is not reached. The levitation controller integrates the power part and the control part into a single-point type and a double-point type. Because the whole vehicle has 20 suspension points, each quantity controller of the double-point type is less and 10 controllers (the single-point type is a main flow controller at present); the single-point type is 20. How to reduce the volume and weight of the suspension controller becomes a key technology. In addition, the suspension controller is a power device, the rated power of each vehicle is about 30kW, and the loss accounts for 10%, namely about 3 kW. Higher losses not only waste electrical energy, but also make the heat dissipation system relatively bulky. Therefore, the key issues of how to design the levitation controller to be miniaturized, lightweight, and low-loss are in the aspects of integrated design, manufacturing, and arrangement of the levitation controller. Fig. 1 is a schematic view of an arrangement under a suspension system of a magnetic levitation vehicle (two-point type suspension controller).

The chopper module of the traditional double-point suspension controller adopts an IGBT chopper module. Because the IGBT chopping module is adopted to chop and chop the waves, the calorific capacity is large, the radiator must be arranged very much, and simultaneously, 4 fans must be adopted to radiate the heat, 2 fans are normally needed to work, 4 fans are needed to work simultaneously in the peak period, the additional energy consumption is greatly increased, and the fault rate is correspondingly increased. The IGBT chopping module is high in switching loss and applied to the suspension controller, so that loss and heating are large, and a large part of electric energy is wasted due to loss. Wherein, the igbt (insulated Gate Bipolar transistor) and the insulated Gate Bipolar transistor are composite fully-controlled voltage-driven power semiconductor devices composed of BJT (Bipolar transistor) and MOS (insulated Gate field effect transistor).

Therefore, the traditional suspension controller has large energy consumption and more heat dissipation devices due to the fact that the IGBT chopping module is adopted to generate large chopping heat, and is a technical problem which needs to be solved urgently by technical personnel in the field.

The above information disclosed in the background section is only for enhancement of understanding of the background of the present application and therefore it may contain information that does not form the prior art that is known to those of ordinary skill in the art.

Disclosure of Invention

The embodiment of the application provides a suspension controller and magnetic levitation vehicle for magnetic levitation vehicle to solve traditional suspension controller, because of adopting IGBT chopper module chopper calorific capacity great, lead to the energy consumption great, and the more technical problem of radiator.

The embodiment of the application provides a suspension controller for a magnetic suspension vehicle, which comprises:

a box body;

the radiator is arranged on the outer side of the rear wall of the box body;

the chopping module is a metal-oxide semiconductor field effect transistor (MOSFET) chopping module, is fixed on the inner side of the rear wall of the box body and is arranged opposite to the radiator;

and the chopping module driving plate is tightly attached and fixed on one side of the chopping module facing the inside of the box body.

The embodiment of the application also provides the following technical scheme:

a magnetic levitation vehicle comprising:

the suspension electromagnets are arranged at the bottom of the magnetic suspension vehicle, and each row of suspension electromagnets comprises a plurality of suspension electromagnet groups arranged at intervals;

the suspension controllers correspond to the suspension electromagnet groups one by one;

the first power supply end of the suspension controller is connected with one end of a power supply main line of the magnetic suspension vehicle through the first air switch, and the first power supply end supplies power to each suspension controller;

the second power supply end of the suspension controller is connected with the other end of a power supply main line of the magnetic suspension vehicle through the second air switch, and the second power supply end supplies power to each suspension controller.

Due to the adoption of the technical scheme, the embodiment of the application has the following technical effects:

because the chopping module adopts the MOSFET chopping module, the chopping heat productivity is small, and a fan system for heat dissipation is not needed, so that the whole size of the suspension controller is small, the weight is light, and the energy consumption is small.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of an under-carriage arrangement (two-point type levitation controller) of a levitation system of a magnetic levitation vehicle;

FIG. 2 is a view of a levitation controller for a magnetic levitation vehicle of an embodiment of the present application as seen from a rear wall of a housing;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a view of FIG. 2 with the front wall of the bin removed;

FIG. 5 is a left side view of FIG. 2;

FIG. 6 is a rear wall of the housing of the levitation controller of FIG. 2 and a chopper module with a chopper module drive plate mounted;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a left side view of FIG. 6;

FIG. 9 is a perspective view of a chopper module of the levitation controller of FIG. 2;

FIG. 10 is a side view of FIG. 9;

FIG. 11 is a side view of chopper module drive plates of the levitation controller of FIG. 2;

FIG. 12 is a top view of FIG. 11;

FIG. 13 is a schematic illustration of the capacitor bank and front and rear carrier frames of the levitation controller of FIG. 2, the rear carrier frame being installed;

FIG. 14 is a right side view of FIG. 13;

FIG. 15 is a schematic diagram of a power module of the levitation controller shown in FIG. 2;

FIG. 16 is a schematic diagram of a first power supply module of the computer and a second power supply module of the computer of the levitation controller shown in FIG. 2;

FIG. 17 is a schematic diagram of a power fail output circuit of the levitation controller shown in FIG. 2;

FIG. 18 is a schematic diagram of the distribution of the various temperature sensors of the levitation controller shown in FIG. 2;

FIG. 19 is a schematic diagram of the low current control portion of the levitation controller shown in FIG. 2;

FIG. 20 is a schematic diagram of the main circuit heavy current portion of the levitation controller shown in FIG. 2;

fig. 21 is a schematic circuit connection diagram of a levitation controller of a magnetic levitation vehicle according to an embodiment of the present application.

Reference numerals:

100 a suspension controller, 110 the rear wall of a box body, 120 a radiator, 121 radiating fins, 130 chopping modules and 140 chopping module driving plates;

210 film capacitors, 220 front carrier, 230 rear carrier, 231 first transverse arm, 232 second transverse arm,

300 power module, 310 power module first power module, 320 power module second power module, 330 power module third power module,

400 levitation control computer, 410 computer first power supply module, 420 computer second power supply module,

a 510 branch led circuit, a 520 trunk led circuit,

610 a first air switch, 620 a second air switch,

1 a first temperature sensor, 2 a second temperature sensor, 3 a third temperature sensor, 4 a fourth temperature sensor, 5a fifth temperature sensor, 6 a sixth temperature sensor, 7 a seventh temperature sensor, 8 an eighth temperature sensor, 9 a ninth temperature sensor.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example one

As shown in fig. 2 to 12, a levitation controller for a magnetic levitation vehicle according to an embodiment of the present application includes:

a box body;

a heat sink 120 disposed outside the rear wall 110 of the case;

the chopping module 130 is a metal-oxide semiconductor field effect transistor (MOSFET) chopping module, and the chopping module 130 is fixed on the inner side of the rear wall 110 of the box body and is arranged opposite to the radiator 120;

and a chopping module driving plate 140 closely fixed to one side of the chopping module 130 facing the inside of the case.

The suspension controller for the magnetic suspension vehicle is a double-point suspension controller, and a chopping module serving as a power device of the suspension controller is an MOSFET chopping module. MOSFET chopping module itself is calorific capacity less when carrying out the chopping, and MOSFET chopping module is not less than under IGBT chopping module's the prerequisite at the parameter, compares IGBT chopping module, and calorific capacity reduces greatly, and simultaneously, volume and weight also reduce. The MOSFET chopping module is fixed on the inner side of the rear wall of the box body, the radiator is arranged on the outer side of the rear wall of the box body, the MOSFET chopping module and the radiator are arranged in a back-to-back mode, heat generated by the MOSFET chopping module can be quickly dissipated, and the suspension controller does not need to be provided with a fan for heat dissipation independently. The switching loss of the MOSFET chopper module is less than half of that of the IGBT chopper module in the rated working state of the suspension controller, so that the reduction of other devices caused by the MOSFET chopper module is also objective. In addition, the chopping module driving plate is tightly attached to and fixed on one side, facing the inside of the box body, of the chopping module, the chopping module driving plate and the chopping module are integrated, wiring is saved, and occupied space is reduced. The suspension controller for the magnetic suspension vehicle, provided by the embodiment of the application, has the advantages that the chopping module adopts the MOSFET chopping module, the chopping heat productivity is small, and a fan system for heat dissipation is not required to be arranged any more, so that the whole size of the suspension controller is small, the weight is light, and the energy consumption is small.

Specifically, the MOSFET chopping module is a SIC MOSFET chopping module. SIC is silicon carbide; MOSFET, Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET: metal-oxide semiconductor field effect transistors, abbreviated as mosfets.

In particular, the chopper module converts a fixed dc voltage into a variable dc voltage.

In an implementation, as shown in fig. 6, 7 and 8, the chopping module 130 is a plurality of chopping modules, and each chopping module 130 is arranged at intervals from top to bottom; specifically, as shown in the figure, the number of the chopper modules is four;

the radiator comprises a plurality of radiating fins 121, and the radiating fins 121 are arranged at intervals in a mode of being parallel to the lower bottom of the box body;

the width of the heat dissipation fins 121 in the transverse direction is greater than the width of the chopper module 130, and the chopper module 130 is located in the middle of the inner side of the rear wall 110 of the box body, which is opposite to the heat dissipation fins 121.

The number of the chopping modules is set according to the requirement of the suspension controller. The radiating area is large due to the radiating fins, and heat can be quickly radiated. The chopping module and the radiator are arranged at positions which are favorable for the radiator to dissipate heat generated by the chopping module as soon as possible.

In practice, as shown in fig. 7, the width of the heat dissipation fins 121 in the transverse direction is in a range of one third or more and one half or less of the width of the rear wall of the box.

The ratio of the width of the heat radiating fin in the transverse direction to the width of the rear wall of the case may be selected according to the amount of heat generated when the levitation controller operates. Because the overall size of the suspension controller in the embodiment of the present application is much smaller than that of the suspension controller in the background art, the width of the heat dissipation fins in the transverse direction of the suspension controller in the embodiment of the present application is much smaller than that of the heat dissipation components of the suspension controller in the background art.

In an implementation, as shown in fig. 3, 4, 13 and 14, the levitation controller further includes:

a capacitor bank cooperating with the chopping module, the capacitor bank including a plurality of thin film capacitors 210; specifically, there are two thin film capacitors 210;

the front support frame 220 is fixed to the inner side of the front wall of the box, and each thin film capacitor 210 is fixed to the front support frame 220 and arranged at intervals from top to bottom, so that the thin film capacitor 220 is arranged in front of the chopper module 130 in an overhead manner;

the end face of the rear support frame 230 is in a shape of a Chinese character 'yi', a first transverse arm 231 of the rear support frame is fixed with the chopping module 130, the outer side of a second transverse arm 232 of the rear support frame is fixed with the negative electrode of the thin-film capacitor 210, and the chopping module 130 and the chopping module driving plate 140 are located between the inner side of the second transverse arm 232 of the rear support frame and the rear wall 110 of the box body;

the rear support frame is used for keeping the film capacitor to be located in front of the chopping module in an overhead mode and keeping the distance between the film capacitor and the chopping module, and is used for grounding the negative electrode of the film capacitor.

Through simulation, the film capacitor is smaller and lighter in processing ripple compared with the electrolytic capacitor adopted by the suspension controller in the background art, and therefore the film capacitor is selected as the supporting capacitor. The suspension controller of the embodiment of the application adopts the current mainstream thin film capacitor, and the occupied space is further reduced. The thin film capacitor is arranged in front of the chopping module, so that the space utilization rate can be maximized. The film capacitor is mainly fixed with the front wall of the box body through the front support frame, and the film capacitor is fixed with the box body. The rear support frame is used for assisting in mounting the film capacitor, and two sides of the film capacitor are stably mounted through the front support frame and the rear support frame respectively. The outer side of the second transverse arm of the conductive rear support frame is fixed with the negative electrode of the thin film capacitor to form a grounding loop, and the grounding loop comprises the negative electrode of the thin film capacitor, the rear support frame, the chopping module and a grounded box body.

In an implementation, as shown in fig. 15, the levitation controller further includes a power module 300 configured to receive the first high-voltage direct current and output a low-voltage direct current, specifically, the first high-voltage direct current is 110V high-voltage direct current. In view of the importance of the power supply module to the overall floating controller, power supply redundancy design is made at the floating controller level.

In practice, as shown in fig. 15, the power module 300 includes:

two mutually redundant power supply module first power supply modules 310, configured to output a first low-voltage direct current required by the chopper module driver board; specifically, the first low-voltage direct current is a +15V low-voltage direct current;

the second power supply modules 320 of the two mutually redundant power supply modules are used for outputting second low-voltage direct current required by the detection board of the suspension controller; specifically, the second low-voltage direct current is a low-voltage direct current of ± 15V;

the third power supply module 330 is used for outputting a third +24V low-voltage direct current required by the external suspension sensor; specifically, the third low-voltage direct current is a +24V low-voltage direct current.

The redundancy design is carried out on the first power supply module of the power supply module, the second power supply module of the power supply module and the third power supply module of the power supply module, and the safety of power supply of a chopping module driving plate, a detection plate of a suspension controller and an external suspension sensor is guaranteed.

Specifically, the detection board of the suspension controller includes but is not limited to: the input current detection board, the output current detection board and the input voltage detection board.

In an implementation, as shown in fig. 2, 3 and 16, the levitation controller further includes:

and the levitation control computer 400 is used for generating a control quantity and outputting the control quantity to the chopper module 140. The suspension control computer is the most core device of the suspension controller.

In practice, power supply redundancy design is performed at the level of the levitation control computer in consideration of the importance of the levitation control computer to the whole levitation controller.

As shown in fig. 16, the levitation controller further includes:

a first computer power supply module 410, configured to receive the first high-voltage direct current and output a low-voltage direct current required by the levitation control computer 400;

the computer second power supply module 420 is configured to receive a second high-voltage direct current and output a low-voltage direct current required by the levitation control computer;

wherein the first computer power supply module 410 and the second computer power supply module 420 are redundant to each other; specifically, the second high-voltage direct current is 330V high-voltage direct current.

In an implementation, the levitation controller further includes a strong current driving circuit, and the second high-voltage direct current provides power for the strong current driving circuit. The first high-voltage direct current and the second high-voltage direct current are high-voltage direct currents which are possessed by the suspension controller, and the power supply of the most core device suspension control computer of the suspension controller is ensured by forming a first power supply module and a second power supply module which are mutually redundant. Thus, even if any one of the first high-voltage direct current and the second high-voltage direct current can be supplied with power, the levitation control computer can be operated with the power supplied.

In an implementation, the levitation controller further includes a power failure output circuit, as shown in fig. 17, the power failure output circuit includes:

the branch LED circuits 510 are in one-to-one correspondence with the power supply modules, and the LED circuits 510 are connected with the corresponding power supply modules; the power supply module comprises a power supply module first power supply module, a power supply module second power supply module, a power supply module third power supply module, a computer first power supply module and a computer second power supply module;

when the power supply module works normally, the corresponding branch light-emitting diode circuit is switched on, and the light-emitting diode of the branch light-emitting diode circuit is bright; when the power supply module fails, the corresponding branch light-emitting diode circuit is disconnected, and the light-emitting diodes of the branch light-emitting diode circuit are turned off.

Through the branch light-emitting diode circuit, the faults of each power supply module can be reported so as to be solved in a targeted manner.

In an implementation, as shown in fig. 17, the power failure output circuit further includes:

a trunk led circuit 520, respectively connected to each of the branch led circuits 510;

when all the power supply modules work normally, the main circuit light-emitting diode circuit is switched on, and the light-emitting diodes of the main circuit light-emitting diode circuit; when any power supply module fails, the main circuit light-emitting diode circuit is disconnected, and the light-emitting diode of the main circuit light-emitting diode circuit is turned off.

Through the main circuit light-emitting diode circuit, the power failure can be reported so as to be solved in a targeted manner.

Example two

A plurality of temperature sensors are arranged at key positions in a box body of the suspension controller, and a suspension controller temperature early warning mechanism is formed by combining each current sensor in the suspension controller. Aiming at the problems that the suspension controller is in a vibration environment, a structural part is easy to loosen due to expansion and contraction and an electrical part is easy to age and lose efficacy due to heating of a power device during long-time work, and the like, a sensor array formed by temperature sensors is arranged in a box body of the suspension controller and used for monitoring the heating condition of each electrical part.

The electric device which has heating phenomenon after the internal fault of the suspension controller mainly comprises: 14 parts such as a first high-voltage power supply filter (namely a 110-volt EMI power supply filter), a second high-voltage power supply filter (namely a 330-volt EMI power supply filter), a contactor, a fast fuse, a capacitor group, a charging resistor, a first switch device group, a second switch device group, an output reactor, a suspension control computer, a power supply module, an input voltage detection board, an input current detection board, an output current detection board and the like.

The electric device with large heat productivity considers the influence of high temperature on the service life and the failure rate during production and manufacture, and has lower failure rate and longer service life (the service life is reduced along with the increase of the working temperature) in the allowable working temperature range. When the heat dissipation system works normally, the temperature rise of each device is within an allowable range, the working temperature of each device is within the allowable working temperature range, and the devices are long in service life and low in failure rate. When the heat dissipation system breaks down, the temperature rise of the device is increased, the actual working temperature of the device exceeds the allowable maximum working temperature, the failure rate is increased, and the service life is reduced.

The adjacent devices are affected by heat radiation, and the working temperature of the adjacent devices is also increased after the abnormal temperature rise of one device. To implement the fault warning mechanism by temperature, the temperature of each device must be monitored. However, 14 temperature sensors are required to monitor the operating temperature of all the electrical devices inside the levitation controller. Therefore, the design of the temperature monitoring point location is optimized by combining the factors such as the self electrical characteristics, the heating characteristics, the structural layout, the heat dissipation system and the like of all the electric devices in the suspension controller.

In order to reduce the arrangement quantity of temperature sensors and ensure that the acquired temperature can accurately reflect the temperature change condition of a tested device to achieve the function of fault early warning, the thermal distribution diagram of the equipment is obtained by combining the spatial layout, the electrical characteristics, the thermal distribution characteristics and the like of the devices in the suspension controller, and 9 temperature monitoring points are arranged in the cross area of the temperature distribution of each equipment.

That is, the levitation controller of the embodiment of the present application further has the following features on the basis of the first embodiment.

In implementation, the suspension controller further comprises a plurality of temperature sensors, each of which is in communication connection with the suspension control computer and has respective preset early warning temperature, and when the temperature of the temperature sensor reaches or exceeds the preset early warning temperature, the temperature sensor performs early warning and transmits an early warning signal to the suspension control computer.

As shown in fig. 18, each of the temperature sensors includes:

first and second temperature sensors 1 and 2 provided around the first and second switching device groups on the radiator;

the third temperature sensor 3 is arranged in a common heating area of the suspension control computer and the power supply module;

the levitation control computer further configured to:

under the condition that the first temperature sensor gives an early warning and the third temperature sensor is normal, judging that the first switch device group has a fault;

judging the second switch device group to have a fault under the condition that the second temperature sensor gives an early warning and the third temperature sensor is normal;

under the condition that the first temperature sensor, the second temperature sensor and the third temperature sensor perform early warning simultaneously, judging the fault of the power supply module;

and under the condition that the third temperature sensor gives an early warning and the first temperature sensor and the second temperature sensor are normal, judging the fault of the suspension control computer.

In an implementation, as shown in fig. 18, each of the temperature sensors further includes:

the fourth temperature sensor 4 is arranged in a common heating area of the power supply module and the first high-voltage power supply filter of the suspension controller;

the fifth temperature sensor 5 is arranged in a common heating area of a second high-voltage power supply filter of the suspension controller and the contactor;

the sixth temperature sensor 6 is arranged in a common heating area of a charging resistor, a contactor and an output reactor of the suspension controller;

the levitation control computer further configured to:

under the condition that the fourth temperature sensor gives an early warning and the first temperature sensor, the second temperature sensor and the third temperature sensor are normal, judging that the first high-voltage power supply filter has a fault;

judging the fault of the second high-voltage power supply filter under the condition that the fifth temperature sensor gives an early warning and the sixth temperature sensor is normal;

and under the condition that the fifth temperature sensor and the sixth temperature sensor simultaneously give an early warning, judging the fault of the contactor.

In an implementation, as shown in fig. 18, each of the temperature sensors further includes:

the seventh temperature sensor 7 is arranged in a common heating area of the output reactor, the output current detection plate and the capacitor bank of the suspension controller;

an eighth temperature sensor 8 arranged in a common heating area of an output reactor and an input voltage detection plate of the suspension controller;

the ninth temperature sensor 9 is arranged in a common heating area of a capacitor bank and a fast melting and input current detection plate of the suspension controller;

the levitation control computer further configured to:

judging the charging resistor fault under the condition that the sixth temperature sensor gives an early warning, and the fifth temperature sensor, the seventh temperature sensor and the eighth temperature sensor are normal;

under the condition that the sixth temperature sensor, the seventh temperature sensor and the eighth temperature sensor simultaneously give an early warning, judging the fault of the output reactor;

judging the fault of the input voltage detection plate under the condition that the eighth temperature sensor gives an early warning and the seventh temperature sensor and the eighth temperature sensor are normal;

judging the fault of the output current detection plate under the condition that the seventh temperature sensor gives an early warning and the sixth temperature sensor and the eighth temperature sensor are normal;

judging the fault of the thin film capacitor under the condition that the seventh temperature sensor and the ninth temperature sensor simultaneously give an early warning;

and under the condition of early warning of the ninth temperature sensor, judging the fault of the input voltage detection plate.

In order to realize the judgment logic of each component, the respective preset early warning temperature of each temperature sensor needs to be found. In order to find out the respective preset early warning temperature of each temperature sensor, a temperature information database needs to be established. The temperature change rule of the arrangement positions of the temperature sensors in the suspension controller can be obtained through thermal simulation temperature rise data of detection points (namely the positions of the temperature sensors) under different load working conditions (different input and output current working conditions of the controller) of the suspension controller and experimental test temperature rise data of the monitoring points under different load working conditions, and a normal temperature rise condition database of the suspension controller temperature sensor array under different load working conditions is established. In the levitation controller control program, a failure diagnosis program for each temperature sensor is added. When the suspension controller works, the temperature rise condition of the temperature sensor array is detected in real time, the working load state (heavy load or light load) of the suspension controller is judged by combining the suspension input current and the suspension output current, the temperature rise condition database is compared, when temperature rise abnormality exists at each temperature measurement point in the suspension controller, the temperature rise abnormality can be found in time, a warning is sent to a system, the fault of the suspension controller is predicted in advance, and fault diagnosis and early warning of the suspension controller are achieved.

In implementation, the suspension controller further comprises a plurality of monitoring sensors, each monitoring sensor is in communication connection with the suspension control computer, and each monitoring sensor sends monitoring data to the suspension control computer;

the levitation control computer further configured to:

and judging that the suspension controller is in a sub-health state and carrying out corresponding early warning when judging that any preset early warning condition is met according to the monitoring data and the preset early warning conditions of each monitoring sensor.

Through the cooperation of monitoring sensor and suspension control computer, can carry out the early warning at the sub-health state of suspension controller to maintain the suggestion, avoid or reduce the emergence of suspension controller trouble, furthest's increase the reliability of suspension controller, and then reduced the system fault rate of magnetic levitation train.

Specifically, the preset early warning condition includes one or more of the following conditions:

detecting that the current exceeds a predetermined overload threshold, i.e. (60A < current average <110A, 60s or 110A < current average, 10 s);

detecting that the voltage exceeds an early warning threshold;

detecting that the current difference between the two points exceeds a preset current difference threshold value (static (the speed is less than 3km/h), the current difference between the two points (the component below 0.2 Hz) is more than 10A, and dynamic, the current difference between the two points (the component below 0.2 Hz) is more than 15A);

detecting that the temperature exceeds a preset temperature (comprehensively judging through 9 temperature sensors and a current sensor);

detecting that the electromagnet collides with the track;

detecting that the position of one probe of the suspension gap sensor exceeds a preset tolerance range;

detecting that a probe position of the acceleration sensor exceeds a preset tolerance range ";

detecting a failure of one or more CPUs of a hover control computer ";

a failure of one or more of the power supply modules is detected.

EXAMPLE III

The suspension controller of the embodiment of the application further has the following characteristics on the basis of the second embodiment.

In implementation, the levitation control computer is a core processing component of the levitation controller. The suspension control computer adopts a CPCI bus structure and supports 4 standard slots, wherein two CPU modules which are mutually hot backup are respectively an AD acquisition module and a signal conditioning module, the board card adopts an European card standard and is connected with the passive bottom plate by adopting a standard CPCI connector. The main function of the device is to generate control quantity through calculation and output the control quantity to a chopper so as to realize the stable suspension of a vehicle; secondly, acquiring information of the suspension system and sending the information to a train operation control system; thirdly, the suspension state is judged by integrating suspension system information, and the protection function of the system is realized. The CPU is a Central Processing Unit (CPU) which is called as a Central Processing Unit in English, serves as an operation and control core of a computer system, and is a final execution Unit for information Processing and program operation. The A/D acquisition module is an analog signal and digital signal acquisition module; CPCI, also known as Compact Peripheral Component Interconnect, is called Compact PCI.

Specifically, as shown in fig. 19 and 20, the interior of the levitation controller is composed of a main circuit strong current part and a weak current control part. The weak current control part mainly comprises a suspension control computer, a 110V power supply filter module and the like. The main loop strong current part mainly comprises an input voltage detection board, a safety module, an MOSFET chopping module, a chopping module driving board, an input current detection board, an output current detection board, a 330V power supply filter module, a contactor module, a capacitor module, a reactor module and the like.

Wherein, the strong current part of the main loop mainly generates the exciting current needed by the electromagnet; the weak current control part controls the electromagnetic force generated by the electromagnet by controlling the exciting current of the suspension electromagnet, so that the vehicle can stably suspend in the set suspension gap in the running process.

Specifically, the middle part of the box body is an inversion area; the two sides of the inversion area in the box body are respectively a control area and a power supply area. The control area, the inversion area and the power supply area in the box body are distributed at three independent positions, so that mutual influence is avoided, and the electromagnetic compatibility is improved.

The suspension control computer, the power supply module and the input voltage detection board are arranged in the control area, and the parts of the weak current control part except the suspension control computer are arranged in the control area. The capacitor bank, the output reactor, the fast fuse, the output current detection board, the MOSFET chopper module are arranged in the inversion area, and the current sensor and the filter are arranged in the power supply area.

Specifically, the heat dissipation system, i.e., the radiator, which is matched with the suspension controller is a fanless heat dissipation system. The MOSFET chopping module of the power module is a main heating device, and the heating of devices such as a power supply, a reactor and the like is not negligible. The radiator is used for radiating heat for the MOSFET chopping module and other heating devices. The cooling mode of the suspension controller is the walking air cooling mode instead of the traditional common forced air cooling mode, so that the fault rate of the suspension controller is low, and the reliability of the suspension controller is improved.

The fan is eliminated, and the volume of the inversion area is reduced to reduce the total volume by 20%. The fan is a mechanical part, the maximum expected life of the fan is about 10 years, and most of the fan needs to be replaced in 3-6 years. Through reasonable layout and detailed heat dissipation analysis, natural heat dissipation is realized, a fan is removed, and the service life of the whole machine is prolonged.

Compared with the background art, the suspension controller provided by the embodiment of the application has the advantages that the area of the radiator is reduced by 40%, the tooth structure of the radiator is further optimized, and the aim of reducing the weight of the radiator by 50% is finally achieved. The radiator of the suspension controller of the background art is too large and heavy, about 21.11kg, and accounts for 30% of the whole suspension controller. The method comprises the steps of calculating the thermal resistance range of the radiating fins required by the chopping module, analyzing the influence of factors such as the number of fins, the thickness of the fins, the spacing between the fins, the direction of the fins, the angle of the fins, the thickness of a heat sink and the like on the temperature and the thermal resistance of the radiating fins, designing new radiating fins according to the characteristics of the influence of the factors on the radiating fins, reducing the area of a radiator by 40%, further optimizing the tooth structure of the radiator, and finally achieving the aim of reducing the weight of the radiator by 50%.

In addition, through calculating and analyzing characteristics of a chopping module, such as power consumption and a switch, parameters of a plurality of key parts of an electric contactor and an output filter inductor are reasonably selected for optimal selection, and optimization of structural layout is combined, so that the volume of the part can be reduced by about 30%, and for the whole machine, the total weight of the suspension controller with the volume reduced by more than 20% can also be reduced to be less than 80% of the original total weight. Through type selection and design optimization, the fault rate of the suspension controller is reduced, and the performance of the suspension system is improved.

Example four

An embodiment of the present application provides a magnetic levitation vehicle, as shown in fig. 21, including:

the suspension electromagnets are arranged at the bottom of the magnetic suspension vehicle, and each row of suspension electromagnets comprises a plurality of suspension electromagnet groups arranged at intervals;

in the levitation controller 100 according to any one of the first to third embodiments, the levitation controllers 100 correspond to the levitation electromagnet groups one by one;

the first air switch 610 and a first power supply end of the suspension controller are connected with one end of a power supply main direct current 110V of the magnetic suspension vehicle through the first air switch, and the first power supply end supplies power to each suspension controller;

the second air switch 620 is connected with the other end of the power supply main direct current 110V of the magnetic levitation vehicle through the second air switch, and the second power supply end supplies power to each levitation controller 100.

When the power supply main line of the magnetic levitation vehicle is normal, the first air switch and the second air switch are closed and mutually backup to supply power to each levitation controller. When a breakpoint (breakpoint 1 shown in fig. 21) occurs inside the magnetic levitation power supply line, the levitation controller of which the breakpoint is close to the first air switch is powered by the first air switch, and the levitation controller of which the breakpoint is close to the second air switch is powered by the second air switch; when a break point (break point 2 shown in fig. 21) occurs between the two ends of the power supply mains of a magnetic levitation vehicle, there is an electrical end that supplies power to each levitation controller.

In the description of the present application and the embodiments thereof, it is to be understood that the terms "top", "bottom", "height", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In this application and its embodiments, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application and its embodiments, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.