阅读说明：本技术 一种电梯门机控制器内置封星电路 (Built-in star circuit that seals of elevator door motor controller ) 是由 杨朝跃 邓之江 于 2020-07-28 设计创作，主要内容包括：本发明公开了一种电梯门机控制器内置封星电路,包括IPM模块、储能电容、可控硅电路和继电器,所述继电器的线圈的正负极分别连接储能电容和可控硅电路；所述IPM模块的P极线路连接在所述继电器的公共触点上,通过继电器的常闭触点连接直流电源正极,所述IPM模块的N极线路连接在所述继电器的常开触点及所述直流电源的负极；其中,所述可控硅电路被触发后接通储能电容与继电器线圈,继电器动作,使所述IPM模块的P极和N极接通后通过IPM模块内置的等效三相整流桥短接同步电机的三相绕组。通过上述方式,使用本发明,在电梯突然断电时,电梯门只能缓慢关闭,防止了撞门现象的发生,有效提高在紧急状况下的电梯的安全性能。(The invention discloses a built-in star sealing circuit of an elevator door motor controller, which comprises an IPM module, an energy storage capacitor, a silicon controlled circuit and a relay, wherein the positive and negative poles of a coil of the relay are respectively connected with the energy storage capacitor and the silicon controlled circuit; the P-pole circuit of the IPM module is connected to a common contact of the relay, the P-pole circuit of the IPM module is connected to the positive pole of the direct current power supply through a normally closed contact of the relay, and the N-pole circuit of the IPM module is connected to the normally open contact of the relay and the negative pole of the direct current power supply; after being triggered, the silicon controlled rectifier circuit is connected with an energy storage capacitor and a relay coil, and the relay acts to enable the P pole and the N pole of the IPM module to be connected and then to be in short circuit with a three-phase winding of the synchronous motor through an equivalent three-phase rectifier bridge arranged in the IPM module. By the mode, when the elevator is suddenly powered off, the elevator door can only be slowly closed, so that the door collision phenomenon is prevented, and the safety performance of the elevator in an emergency is effectively improved.)

1. The utility model provides an elevator door motor controller embeds seals star circuit which characterized in that: comprises an IPM module (10), an energy storage capacitor (C0), a silicon controlled rectifier circuit (20) and a relay (30),

the positive electrode and the negative electrode of the coil of the relay (30) are respectively connected with the energy storage capacitor (C0) and the silicon controlled circuit (20);

the P-pole circuit of the IPM module (10) is connected to a common contact of the relay (30), the anode of a direct current power supply (U0) is connected through a normally closed contact of the relay (30), and the N-pole circuit of the IPM module (10) is connected to a normally open contact of the relay (30) and the cathode of the direct current power supply (U0);

after being triggered, the silicon controlled circuit (20) is connected with an energy storage capacitor (C0) and a coil of a relay (30), and the relay (30) acts to enable a P pole and an N pole of the IPM module (10) to be connected and then a three-phase winding of the synchronous motor (40) to be short-circuited through an equivalent three-phase rectifier bridge arranged in the IPM module (10).

2. The internal star sealer circuit in elevator door motor controller of claim 1, wherein: the IPM module (10) is internally provided with a plurality of diodes which are respectively connected with the transistors in parallel to form the equivalent three-phase rectifier bridge.

3. The internal star sealer circuit in elevator door motor controller of claim 2, wherein: the positive electrodes and the negative electrodes of a plurality of diodes in the IPM module (10) are respectively connected with the emitter and the collector of the transistor.

4. The internal star sealer circuit in elevator door motor controller of claim 1, wherein: one end of the energy storage capacitor (C0) is connected to the anode of the power supply through a first diode (D1), and the other end is grounded.

5. The internal star sealer circuit in elevator door motor controller of claim 1, wherein: and a second diode (D2) is reversely connected in parallel with the coil of the relay (30).

6. The internal star sealer circuit in elevator door motor controller of claim 1, wherein: the thyristor circuit (20) comprises a first transistor (T1) and a second transistor (T2) in line with each other.

7. The internal star sealer circuit in elevator door motor controller of claim 6, wherein: the base electrodes of the first triode (T1) and the second triode (T2) are respectively connected with the collector electrodes, the emitting electrode of the first triode (T1) is connected with the negative electrode of the coil of the relay (30), and the emitting electrode of the second triode (T2) is grounded.

Technical Field

The invention relates to the technical field of elevator control, in particular to a built-in star sealing circuit of an elevator door motor controller.

Background

The elevator door machine is a mechanism for opening and closing elevator car door, when it is received the elevator and opened or closed the door signal, the elevator door machine controls the door opening motor through the control system of its own, changes the moment produced by the motor into the force of a specific direction, closes or opens the door. Most of the prior elevators are in a door opening or closing state, if the elevator is in a sudden power failure state, the elevator door may lose control, and under the action of a heavy hammer, the elevator door can be suddenly closed to cause collision, so that mechanical parts of the elevator door are damaged, and potential safety hazards of clamping passengers exist.

In the existing market, the three-phase winding wire of the armature of the permanent magnet synchronous motor is normally short-circuited at the output end of the door motor controller through the star-sealing contactor.

Disclosure of Invention

The invention aims to provide a built-in star sealing circuit of an elevator door motor controller, which is integrated in a door motor controller circuit, when the door motor detects external power failure, the controller circuit triggers a silicon controlled circuit to enable the circuit to act correspondingly, and a three-phase winding of a synchronous motor is in short circuit through an IPM module, so that a braking torque is generated inside the motor when a rotating shaft of the synchronous motor rotates under the driving of external force, thereby preventing the elevator door from colliding and improving the use safety of the elevator.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: a star-sealing circuit is arranged in an elevator door motor controller and comprises an IPM module, an energy storage capacitor, a silicon controlled circuit and a relay, wherein the positive and negative poles of a coil of the relay are respectively connected with the energy storage capacitor and the silicon controlled circuit; the P-pole circuit of the IPM module is connected to a common contact of the relay, the P-pole circuit of the IPM module is connected to the positive pole of the direct current power supply through a normally closed contact of the relay, and the N-pole circuit of the IPM module is connected to the normally open contact of the relay and the negative pole of the direct current power supply; after being triggered, the silicon controlled rectifier circuit is connected with an energy storage capacitor and a relay coil, and the relay acts to enable the P pole and the N pole of the IPM module to be connected and then to be in short circuit with a three-phase winding of the synchronous motor through an equivalent three-phase rectifier bridge arranged in the IPM module.

According to the technical scheme, the star-sealing circuit is integrated in the circuit of the elevator door motor controller, when the elevator door motor normally operates, the IPM module converts a direct-current power supply in the door motor controller into an alternating-current power supply with controllable output frequency and output voltage to drive the three-phase synchronous motor to rotate, and the three-phase synchronous motor is connected with the elevator door to drive the elevator door to open and close; when the elevator is in a door closing or door opening state, when the internal circuit of the elevator door controller detects external power failure, the silicon controlled circuit is triggered, the silicon controlled circuit switches on the relay and the energy storage capacitor, the coil of the relay is electrified and attracted, so that the normally open contact of the relay is closed, the normally closed contact of the relay is disconnected, the P pole and the N pole of the IPM module are switched on through the normally open contact, particularly, an equivalent three-phase rectifier bridge arranged inside the IPM module is used for short-circuiting the three-phase winding of the synchronous motor, after the three-phase winding of the synchronous motor is short-circuited, when the elevator door is continuously closed or opened, the rotating shaft of the synchronous motor is driven to rotate, the magnetic induction line is cut, larger braking torque is generated inside the motor, and the motor is blocked from.

The star sealing circuit is arranged in the elevator door motor controller, the IPM module is internally provided with a plurality of diodes, and the diodes are respectively connected with the transistors in parallel to form the equivalent three-phase rectifier bridge. When the P pole and the N pole of the IPM module are in short circuit, the equivalent three-phase rectifier bridge is in short circuit with the winding of the three-phase synchronous motor, so that the motor cuts the magnetic induction line when the rotating shaft is driven to rotate by external force to generate braking torque, the rotating shaft is prevented from rotating quickly, and the elevator door is prevented from colliding under the condition of sudden power failure.

The elevator door motor controller is internally provided with a star-sealing circuit, and the anodes and the cathodes of a plurality of diodes in the IPM module are respectively connected with the emitter and the collector of the transistor. After the P machine and the N pole of the IPM module are closed through the normally open contacts of the relay, when a rotating shaft of the motor is forced to rotate by external force, a three-phase winding of the motor generates a cutting magnetic induction line in the motor, potential difference is generated at the three-phase end of the UVW, and the potential difference between the phases causes the forward conduction of a diode in the IPM module, so that short-circuit current is generated, and the UVW three-phase short circuit is realized.

A star-sealing circuit is arranged in the elevator door motor controller, one end of the energy storage capacitor is connected to the anode of a power supply through a first diode, and the other end of the energy storage capacitor is grounded. The energy storage capacitor is connected with the built-in power supply of the controller for charging, and the first diode is in one-way conduction, so that the electric quantity loss of the energy storage capacitor can be prevented.

The star circuit is built in the elevator door motor controller, and the relay coil is reversely connected with a second diode in parallel. The coil of the relay is connected with the diode in parallel, so that induced electromotive force generated by the coil of the relay at the moment of switching on and off a power supply can be discharged, the induced electromotive force can form induced current, the coil of the relay is prevented from being influenced by the induced electromotive force, and the service life of the relay can be effectively prolonged.

The star sealing circuit is arranged in the elevator door motor controller, and the silicon controlled circuit comprises a first triode and a second triode which are connected through a circuit. The triode comprises an NPN transistor or a PNP transistor and is used for connecting the other end of the coil of the relay to the other end of the energy storage capacitor.

The star sealing circuit is arranged in the elevator door motor controller, the base electrodes of the first triode and the second triode are respectively connected with the collector electrodes, the emitting electrode of the first triode is connected with the negative electrode of the relay coil, and the emitting electrode of the second triode is grounded.

The beneficial effects obtained by the invention are as follows: the elevator door motor controller is internally provided with a star sealing circuit, when the elevator is suddenly powered off in the running process, a silicon controlled circuit is triggered to enable a relay coil to be connected with an energy storage capacitor in parallel, after the relay coil is electrified and attracted, the P pole and the N pole of an IPM module are connected through a normally open contact of the relay coil, so that three-phase windings of a three-phase synchronous motor connected with the IPM module are in short circuit, when a rotating shaft is forced to rotate by the motor under external force, a magnetic induction wire is cut in the motor to generate braking torque, the elevator door can only be slowly closed, the door collision phenomenon is prevented, and the safety performance of the elevator in an emergency situation is effectively improved; in the process that the energy storage capacitor supplies power to the relay, when the electric quantity of the energy storage capacitor is exhausted, the electromagnet of the relay loses magnetism, so that the normally closed contact is attracted again, the normally open contact is disconnected, the P pole and the N pole of the IPM module are not short-circuited any more, and the star seal is removed, so that the elevator door is opened to rescue trapped people and maintain equipment; the electric storage quantity of the energy storage capacitor determines the star-closing time, so that the subsequent automatic short circuit release locking motor is facilitated while the safety guarantee is played, and the maintenance of equipment is facilitated.

Drawings

Fig. 1 is a schematic circuit diagram of the star circuit of the present invention.

Description of reference numerals: 10 is an IPM module, 20 is a thyristor circuit, 30 is a relay, and 40 is a synchronous motor.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

As shown in fig. 1, the star circuit built in the elevator door motor controller comprises an IPM module 10, an energy storage capacitor C0, a thyristor circuit 20 and a relay 30,

the positive and negative poles of the coil of the relay 30 are respectively connected with the energy storage capacitor C0 and the silicon controlled circuit 20;

the P pole circuit of the IPM module 10 is connected to the common contact of the relay 30, and is connected to the positive pole of the DC power supply U0 through the normally closed contact NC of the relay 30, and the N pole circuit of the IPM module 10 is connected to the normally open contact NO of the relay 30 and the negative pole of the DC power supply U0;

after the thyristor circuit 20 is triggered, the energy storage capacitor C0 and the coil of the relay 30 are connected, and the relay 30 acts to make the P pole and the N pole of the IPM module 10 connected and then short-circuit the three-phase winding of the synchronous motor 40 through the equivalent three-phase rectifier bridge built in the IPM module 10.

The IPM module 10 is internally provided with a plurality of diodes D01, D02, D03, D04, D05 and D06, and a plurality of diodes D01, D02, D03, D04, D05 and D06 are respectively connected in parallel with the transistor VT to form an equivalent three-phase rectifier bridge. The positive and negative electrodes of the plurality of diodes inside the IPM module 10 are connected to the emitter and collector of the transistor, respectively.

In this embodiment, transistors VT1 to VT6 are disposed in the IPM module 10, an emitter and a collector of the transistor VT1 are respectively connected to an anode and a cathode of the diode D01, an emitter and a collector of the transistor VT2 are respectively connected to an anode and a cathode of the diode D02, an emitter and a collector of the transistor VT3 are respectively connected to an anode and a cathode of the diode D03, an emitter and a collector of the transistor VT4 are respectively connected to an anode and a cathode of the diode D04, an emitter and a collector of the transistor VT5 are respectively connected to an anode and a cathode of the diode D05, and an emitter and a collector of the transistor VT6 are respectively connected to an anode and a cathode of the diode D06 to form an equivalent three-phase rectifier bridge for controlling the three-phase synchronous motor 40.

One end of the energy storage capacitor C0 is connected to the positive electrode of the power supply through a first diode D1, and the other end is grounded.

The coil of the relay 30 is reversely connected in parallel with a second diode D2.

The thyristor circuit 20 includes a first transistor T1 and a second transistor T2 wired to each other. Specifically, the bases of the first transistor T1 and the second transistor T2 are connected to the collectors, respectively, the emitter of the first transistor T1 is connected to the negative electrode of the coil of the relay 30, and the emitter of the second transistor T2 is grounded.

In the specific implementation of the present invention, during normal operation, the transistor in the IPM module 10 converts the dc power supply of the door operator controller into an ac power supply with controllable output frequency and output voltage, so as to drive the three-phase permanent magnet synchronous motor 40 to rotate, thereby playing a role of opening and closing the elevator door. When breaking down or cut off the power supply suddenly, the door machine detects outside outage, send trigger signal through the controller and make second triode T2 switch on, second triode T2 can make first triode T1 switch on after switching on, make second triode T2 maintain to switch on through first triode T1, realize the auto-lock on-state, relay 30 and triode T1 this moment, T2 form the route, the electric current flows through relay 30 coil, its electro-magnet of actuation makes normally closed contact NC disconnection after relay 30 coil gets electricity, normally open contact NO is closed, at this moment, synchronous machine 40's three-phase winding, IPM module 10 forms independent loop with relay normally open contact NO.

When relay normally open contact NO is closed, when three-phase permanent magnet synchronous motor 40's pivot was forced to take place the rotation by external force, the three-phase winding of motor took place the cutting magnetic induction line in that the motor is inside, produced the potential difference at three-phase winding UVW end, the potential difference between each looks will lead to IPM module 10 inside diode forward to switch on and produce short-circuit current, specifically does:

the current of the U-phase flowing through the V-phase forms a positive closed loop through VT1, the NO contact and VT 5;

the current of the V phase flowing through the U phase forms a positive closed loop through VT2, NO contact and VT 4;

the current of the U-phase flowing through the W-phase forms a positive closed loop through VT1, the NO contact and VT 6;

the current of the W phase flowing through the U phase forms a positive closed loop through VT3, NO contact and VT 4;

the current of the V phase flowing through the W phase forms a positive closed loop through VT2, NO contact and VT 6;

the W phase flows through the V phase current to form a positive closed loop through VT3, NO contact and VT 5;

when the normally open contact NO of the relay is closed, the P pole and the N pole of the IPM module 10 are short-circuited, and the whole closed loop directly short-circuits the three-phase winding UVW of the synchronous motor 40. After the three-phase windings of the three-phase synchronous motor are in short circuit, the elevator door forces the rotating shaft to rotate to generate braking torque to prevent the rotating shaft from continuously rotating, so that the elevator door can only be slowly closed, the door collision is prevented, and the use safety of the elevator is further improved.

Energy storage capacitor C0's electric quantity is used for driving relay 30 coil actuation when the trouble takes place or the outage, when sealing the star circuit action, energy storage capacitor C0 is parallelly connected with relay 30 coil, when energy storage capacitor C0's electric quantity exhausts, the electric current of relay 30 coil diminishes make, make its electro-magnet of coil release, relay normally closed contact NC actuation this moment, normally open contact NO disconnection, the P utmost point and the N utmost point disconnection of IPM module 10, seal the star circuit inefficacy, the inside detent torque that NO longer produces of motor, external force rotates the pivot easily when exerting the pivot of motor, be convenient for the later stage to the maintenance and the rescue trapped personnel of door machine. The time for which the satellite circuit is maintained depends on the power storage capacity of the energy storage capacitor C0.

In summary, the actual samples of the present invention are prepared according to the description and the drawings, and after a plurality of usage tests, the effect of the usage tests proves that the present invention can achieve the expected purpose, and the practical value is undoubted. The above-mentioned embodiments are only for convenience of illustration and not intended to limit the invention in any way, and those skilled in the art will be able to make equivalents of the features of the invention without departing from the technical scope of the invention.