阅读说明：本技术 轨道列车牵引永磁同步电机转子位置检测装置及轨道列车 (Rail train traction permanent magnet synchronous motor rotor position detection device and rail train ) 是由 王鸿雪 隋德磊 李磊 于 2018-12-20 设计创作，主要内容包括：本发明提供一种轨道列车牵引永磁同步电机转子位置检测装置及轨道列车,包括：主控制器、现场可编程门阵列、信号转换器、第一旋转变压器以及第二旋转变压器；主控制器与现场可编程门阵列电连接；第一旋转变压器的激励端以及第二旋转变压器的激励端均与现场可编程门阵列电连接；第一旋转变压器的输出端和第二旋转变压器的输出端均与信号转换器的输入端电连接,信号转换器的输出端与现场可编程门阵列电连接；第一旋转变压器的转子与第一牵引电机传动连接,第二旋转变压器的转子与第二牵引电机传动连接；可以同时检测第一牵引电机和第二牵引电机的转子转动角度,降低了轨道列车的成本。(The invention provides a rail train traction permanent magnet synchronous motor rotor position detection device and a rail train, comprising: the system comprises a main controller, a field programmable gate array, a signal converter, a first rotary transformer and a second rotary transformer; the main controller is electrically connected with the field programmable gate array; the excitation end of the first rotary transformer and the excitation end of the second rotary transformer are both electrically connected with the field programmable gate array; the output end of the first rotary transformer and the output end of the second rotary transformer are both electrically connected with the input end of the signal converter, and the output end of the signal converter is electrically connected with the field programmable gate array; the rotor of the first rotary transformer is in transmission connection with the first traction motor, and the rotor of the second rotary transformer is in transmission connection with the second traction motor; the rotor rotation angles of the first traction motor and the second traction motor can be detected simultaneously, and the cost of the rail train is reduced.)

1. The utility model provides a rail train pulls PMSM rotor position detection device which characterized in that includes: the system comprises a main controller, a field programmable gate array, a signal converter, a first rotary transformer and a second rotary transformer;

the main controller is electrically connected with the field programmable gate array;

the excitation end of the first rotary transformer and the excitation end of the second rotary transformer are both electrically connected with the field programmable gate array;

the output end of the first rotary transformer and the output end of the second rotary transformer are both electrically connected with the input end of the signal converter, and the output end of the signal converter is electrically connected with the field programmable gate array;

and the rotor of the first rotary transformer is in transmission connection with a first traction motor, and the rotor of the second rotary transformer is in transmission connection with a second traction motor.

2. The device for detecting the position of the rotor of the rail-train traction permanent-magnet synchronous motor according to claim 1, further comprising a first amplifier and a second amplifier, wherein the excitation end of the first rotary transformer is connected to the field programmable gate array through the first amplifier, and the first amplifier is configured to amplify the excitation signal input to the first rotary transformer;

the excitation end of the second rotary transformer is connected with the field programmable gate array through the second amplifier, and the second amplifier is used for amplifying the excitation signal input to the second rotary transformer.

3. The apparatus of claim 2, wherein the first amplifier comprises a first differential amplifier circuit and the second amplifier comprises a second differential amplifier circuit.

4. The rail train traction permanent magnet synchronous motor rotor position detection device according to claim 1, further comprising a third rotary transformer, wherein an excitation end of the third rotary transformer is electrically connected with the field programmable gate array, and an output end of the third rotary transformer is electrically connected with the signal converter; the third rotary transformer is electrically connected with a third traction motor.

5. The device for detecting the position of the rotor of the rail train traction permanent magnet synchronous motor according to claim 4, wherein the device for detecting the position of the rotor of the rail train traction permanent magnet synchronous motor further comprises a third amplifier, the excitation end of the third rotary transformer is connected with the field programmable gate array through the third amplifier, and the third amplifier is used for amplifying the excitation signal transmitted to the third rotary transformer.

6. The rail train traction permanent magnet synchronous motor rotor position detection device according to claim 5, further comprising a fourth rotary transformer, wherein an excitation end of the fourth rotary transformer is electrically connected with the field programmable gate array, and an output end of the fourth rotary transformer is electrically connected with the signal converter; the third rotary transformer is electrically connected with a fourth traction motor.

7. The device for detecting the position of the rotor of the rail train traction permanent magnet synchronous motor according to claim 6, wherein the device for detecting the position of the rotor of the rail train traction permanent magnet synchronous motor further comprises a fourth amplifier, the excitation end of the fourth rotary transformer is electrically connected with the field programmable gate array through the fourth amplifier, and the fourth amplifier is used for amplifying the excitation signal transmitted to the fourth rotary transformer.

8. The apparatus of claim 7, wherein the third amplifier comprises a third differential amplifier circuit and the fourth amplifier comprises a fourth differential amplifier circuit.

9. The apparatus of any one of claims 1-8, wherein the signal converter comprises an analog-to-digital converter.

10. A rail train, comprising: the device for detecting the position of the rotor of the permanent magnet synchronous motor for railway train traction as claimed in any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of rail train traction control, in particular to a rail train traction permanent magnet synchronous motor rotor position detection device and a rail train.

Background

The power of the rail train is generally provided by a rail train traction motor, the rail train traction motor is a permanent magnet synchronous motor, and the rail train traction motor comprises a rotor formed by a permanent magnet and a stator formed by a coil, so that how to detect the position of the rotor to control the magnetic field of the coil so as to control the operation of the rail train traction motor becomes a research hotspot.

Disclosure of Invention

In view of this, the invention provides a device for detecting a position of a rotor of a permanent magnet synchronous motor for rail train traction and a rail train, so as to solve the technical problem that in the prior art, decoding chips correspond to rotary transformers one by one, a plurality of rail train traction motors are arranged on the rail train, and a plurality of decoding chips are correspondingly required to be arranged, so that the cost of the rail train is high.

The embodiment of the invention provides a device for detecting the position of a rotor of a permanent magnet synchronous motor for rail train traction, which comprises: the system comprises a main controller, a field programmable gate array, a signal converter, a first rotary transformer and a second rotary transformer;

the main controller is electrically connected with the field programmable gate array;

the excitation end of the first rotary transformer and the excitation end of the second rotary transformer are both electrically connected with the field programmable gate array;

the output end of the first rotary transformer and the output end of the second rotary transformer are both electrically connected with the input end of the signal converter, and the output end of the signal converter is electrically connected with the field programmable gate array;

and the rotor of the first rotary transformer is in transmission connection with a first traction motor, and the rotor of the second rotary transformer is in transmission connection with a second traction motor.

The device for detecting the position of the rotor of the rail train traction permanent magnet synchronous motor as described above, preferably, the device for detecting the position of the rotor of the rail train traction permanent magnet synchronous motor further includes a first amplifier and a second amplifier, the excitation end of the first rotary transformer is connected to the field programmable gate array through the first amplifier, and the first amplifier is configured to amplify an excitation signal input to the first rotary transformer;

the excitation end of the second rotary transformer is connected with the field programmable gate array through the second amplifier, and the second amplifier is used for amplifying the excitation signal input to the second rotary transformer.

In the above device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction, preferably, the first amplifier includes a first differential amplifier circuit, and the second amplifier includes a second differential amplifier circuit.

The device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction as described above, preferably, the device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction further includes a third rotary transformer, an excitation end of the third rotary transformer is electrically connected to the field programmable gate array, and an output end of the third rotary transformer is electrically connected to the signal converter; the third rotary transformer is electrically connected with a third traction motor.

The device for detecting the position of the rotor of the rail train traction permanent magnet synchronous motor as described above, preferably, the device for detecting the position of the rotor of the rail train traction permanent magnet synchronous motor further includes a third amplifier, an excitation end of the third rotary transformer is connected to the field programmable gate array through the third amplifier, and the third amplifier is configured to amplify an excitation signal transmitted to the third rotary transformer.

The device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction as described above, preferably, the device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction further includes a fourth rotary transformer, an excitation end of the fourth rotary transformer is electrically connected to the field programmable gate array, and an output end of the fourth rotary transformer is electrically connected to the signal converter; the third rotary transformer is electrically connected with a fourth traction motor.

The device for detecting the position of the rotor of the rail train traction permanent magnet synchronous motor as described above, preferably, the device for detecting the position of the rotor of the rail train traction permanent magnet synchronous motor further includes a fourth amplifier, an excitation end of the fourth rotary transformer is electrically connected to the fpga through the fourth amplifier, and the fourth amplifier is configured to amplify an excitation signal transmitted to the fourth rotary transformer.

In the above device for detecting the position of the rotor of the rail train traction permanent magnet synchronous motor, preferably, the third amplifier includes a third differential amplifier circuit, and the fourth amplifier includes a fourth differential amplifier circuit.

The device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction is characterized in that the signal converter comprises an analog-to-digital converter.

The embodiment of the invention also provides a rail train, which is characterized by comprising the rail train traction permanent magnet synchronous motor rotor position detection device.

The invention provides a rail train traction permanent magnet synchronous motor rotor position detection device and a rail train, wherein a main controller is electrically connected with a field programmable gate array; the excitation end of the first rotary transformer and the excitation end of the second rotary transformer are both electrically connected with the field programmable gate array; the output end of the first rotary transformer and the output end of the second rotary transformer are both electrically connected with the input end of the signal converter, and the output end of the signal converter is electrically connected with the field programmable gate array; the rotor rotation angles of the first traction motor and the second traction motor can be detected simultaneously, and the cost of the rail train is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic connection diagram of a device for detecting a position of a rotor of a permanent magnet synchronous motor for rail train traction according to an embodiment of the present invention.

Description of reference numerals:

1. a first rotary transformer;

2. a second rotary transformer;

3. a third rotary transformer;

4. a fourth rotary transformer;

5. a first amplifier;

6. a second amplifier;

7. a third amplifier;

8. a fourth amplifier;

10. a main controller;

20. a field programmable gate array;

30. a signal converter.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic connection diagram of a device for detecting a position of a rotor of a permanent magnet synchronous motor for rail train traction according to an embodiment of the present invention.

Please refer to fig. 1. The embodiment provides a rail train pulls PMSM rotor position detection device, includes: a main controller 10, a field programmable gate array 20, a signal converter 30, a first rotary transformer 1 and a second rotary transformer 2.

The main controller 10 is electrically connected to the field programmable gate array 20.

The excitation terminal of the first rotary transformer 1 and the excitation terminal of the second rotary transformer 2 are both electrically connected to the field programmable gate array 20.

The output end of the first rotary transformer 1 and the output end of the second rotary transformer 2 are both electrically connected with the input end of the signal converter 30, and the output end of the signal converter 30 is electrically connected with the field programmable gate array 20.

The rotor of the first rotary transformer 1 is in transmission connection with a first traction motor, and the rotor of the second rotary transformer 2 is in transmission connection with a second traction motor.

Specifically, the master controller 10 may be any device capable of controlling the operation of the rail train traction motors, such as: the main controller may be a single chip or a programmable logic controller, and may be a device capable of receiving signals from the field programmable gate array 20 and sending signals to the field programmable gate array 20. In addition, the main controller 10 is electrically connected to each rail train traction motor of the rail train, so as to control the operation of each rail train traction motor after analyzing the signal from the field programmable gate array 20.

The first rotary transformer 1 is an electromagnetic sensor, also called a synchronous resolver; the first rotary transformer 1 comprises a stator and a rotor, the stator comprises a primary coil, an excitation end of the first rotary transformer 1 is electrically connected with the primary coil, the excitation end of the first rotary transformer 1 is also electrically connected with the field programmable gate array 20, and the field programmable gate array can send an excitation signal to the primary coil to supply power to the primary coil; the rotor of the first rotary transformer 1 comprises a secondary coil, and the rotor of the first rotary transformer 1 is in transmission connection with the rotor of the first traction motor; when the rotor of the first traction motor rotates, the rotor of the first rotary transformer 1 is driven to rotate, and a detection signal is generated; the signal converter 30 receives the detection signal and converts the detection signal to form a signal that can be received by the field programmable gate array 20, and the field programmable gate array 20 processes the signal to obtain the rotation angle of the first traction motor.

For example, the first resolver 1 may detect a sine voltage signal and a cosine voltage signal of the Rotation of the first traction motor, and after receiving the sine voltage signal and the cosine voltage signal, the programmable gate array calculates a rotor Rotation angle of the first traction motor according to a Coordinate Rotation Digital Computer (CORDIC).

In this embodiment, the second rotary transformer 2 and the first rotary transformer 1 have the same structure and working principle, and are not described herein again. The first traction motor and the second traction motor may be traction motors on different bogies in the same carriage in the rail train, and of course, the first traction motor and the second traction motor may also be traction motors on bogies in different carriages in the rail train.

In this embodiment, the Field Programmable Gate Array 20(Field-Programmable Gate Array, FPGA for short) may process the detection signals from the first rotary transformer 1 and the second rotary transformer 2 to obtain the rotation angles of the first traction motor and the second traction motor rotor, and further transmit the rotation angles of the first traction motor and the second traction motor rotor to the main controller 10, and the main controller 10 controls the first traction motor and the second traction motor to operate according to the rotation angles of the first traction motor and the second traction motor rotor. In addition, the field programmable gate array 20 may also transmit an excitation signal to the first and second resolvers 1 and 2 to operate the first and second resolvers 1 and 2. It is noted that the field programmable gate array 20 implements the above functions by executing an internally stored program.

The signal converter 30 in the present embodiment may be any device capable of converting the detection signals transmitted by the first rotary transformer 1 and the second rotary transformer 2 into signals capable of being recognized by the field programmable gate array 20; for example: the signal converter 30 may include an analog-to-digital converter, which may convert the analog signals output by the first and second resolvers 1 and 2 into digital signals and transmit the digital signals to the field programmable gate array 20.

In this embodiment, the main controller 10 may be a TMS320F28335 type digital signal processor, the field programmable gate array 20 may be an XC3S500E type FPGA, and the signal converter 30 may be an AD7606 type analog-to-digital converter.

The working process of the device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction provided by the embodiment is as follows: the field programmable gate array 20 transmits excitation signals to the first rotary transformer 1 and the second rotary transformer 2, when a rotor of the first traction motor rotates, the rotor of the first rotary transformer 1 is driven to rotate, the first rotary transformer 1 can detect sine voltage signals and cosine voltage signals, the signal converter 30 converts the sine voltage signals and the cosine voltage signals and transmits the converted sine voltage signals and cosine voltage signals to the field programmable gate array 20, the field programmable gate array 20 processes the received sine voltage signals and cosine voltage signals to obtain a rotation angle of the first traction motor, and the controller controls the first traction motor to work according to the rotation angle.

Meanwhile, when the rotor of the second traction motor rotates, the rotor of the second rotary transformer 2 is driven to rotate, the second rotary transformer 2 can detect sine voltage signals and cosine voltage signals, the signal converter 30 converts the sine voltage signals and the cosine voltage signals and transmits the converted sine voltage signals and cosine voltage signals to the field programmable gate array 20, the field programmable gate array 20 processes the received sine voltage signals and cosine voltage signals to obtain the rotation angle of the second traction motor, and the controller controls the second traction motor to work according to the rotation angle.

In the device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction provided by the embodiment, the main controller 10 is electrically connected with the field programmable gate array 20; the excitation end of the first rotary transformer 1 and the excitation end of the second rotary transformer 2 are both electrically connected with the field programmable gate array 20; the output end of the first rotary transformer 1 and the output end of the second rotary transformer 2 are both electrically connected with the input end of the signal converter 30, and the output end of the signal converter 30 is electrically connected with the field programmable gate array 20; the rotor rotation angles of the first traction motor and the second traction motor can be detected simultaneously, and the cost of the rail train is reduced.

In this embodiment, the device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction further comprises a first amplifier 5 and a second amplifier 6, wherein the excitation end of the first rotary transformer 1 is connected with the field programmable gate array 20 through the first amplifier 5, and the first amplifier 5 is used for amplifying an excitation signal input to the first rotary transformer 1; the excitation terminal of the second resolver 2 is connected to the field programmable gate array 20 through a second amplifier 6, and the second amplifier 6 is configured to amplify the excitation signal input to the second resolver 2.

The first amplifier 5 and the second amplifier 6 can amplify the excitation signal output by the field programmable gate array 20, and the output power of the field programmable gate array 20 can be set to be small.

Further, the first amplifier 5 includes a first differential amplification circuit, and the second amplifier 6 includes a second differential amplification circuit. The signal output of the differential amplifying circuit is stable.

In this embodiment, the device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction further comprises a third rotary transformer 3, an excitation end of the third rotary transformer 3 is electrically connected with the field programmable gate array 20, and an output end of the third rotary transformer 3 is electrically connected with the signal converter 30; the third resolver 3 is electrically connected to a third traction motor.

The three traction motors can be detected simultaneously, and the cost of the rail train is further reduced. It should be noted that the third rotary transformer 3 is substantially the same as the first rotary transformer 1 and the second rotary transformer 2 in structure and operation principle, and is not described herein again.

Further, the device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction further comprises a third amplifier 7, the excitation end of the third rotary transformer 3 is connected with the field programmable gate array 20 through the third amplifier 7, and the third amplifier 7 is used for amplifying the excitation signal transmitted to the third rotary transformer 3.

Specifically, the device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction further comprises a fourth rotary transformer 4, wherein an excitation end of the fourth rotary transformer 4 is electrically connected with the field programmable gate array 20, and an output end of the fourth rotary transformer 4 is electrically connected with the signal converter 30; the third resolver 3 is electrically connected to a fourth traction motor. The four traction motors can be detected simultaneously, and the cost of the aisle train is further reduced. It should be noted that the fourth rotary transformer 4 is substantially the same as the first rotary transformer 1 and the second rotary transformer 2 in structure and operation principle, and is not described herein again.

Further, the first traction motor, the second traction motor, the third traction motor and the fourth traction motor may all be traction motors on the same carriage bogie; of course, the first traction motor, the second traction motor, the third traction motor and the fourth traction motor may be motors on different car bogies.

In this embodiment, the device for detecting the position of the rotor of the permanent magnet synchronous motor for rail train traction further includes a fourth amplifier 8, an excitation end of the fourth rotary transformer 4 is electrically connected to the field programmable gate array 20 through the fourth amplifier 8, and the fourth amplifier 8 is configured to amplify an excitation signal transmitted to the fourth rotary transformer 4.

Further, the third amplifier 7 includes a third differential amplification circuit, and the fourth amplifier 8 includes a fourth differential amplification circuit. The signal output of the differential amplifying circuit is stable.

There is also provided in other embodiments a rail train comprising: the device for detecting the position of the rotor of the permanent magnet synchronous motor for the traction of the rail train is described above.

In the present invention, unless otherwise specifically stated, the terms "mounted," "connected," "fixed," and the like are to be understood broadly, and for example, may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected internally or in any other manner known to those skilled in the art, unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.