TWM462699U - Permanent magnet synchronous motor drive of electric-power modularized compound high-speed train electric door - Google Patents

Abstract

The utility model discloses a permanent magnet synchronous motor driver of an electric multiple unit high speed train electric door. The permanent magnet synchronous motor driver includes a control unit, a motor driving unit which drives a permanent magnet synchronous motor, a power supply unit which supplies power to the motor driving unit, an external input output unit which inputs or outputs a signal, and a keyboard input unit. The motor driving unit is connected with the control unit. The power supply unit is connected with the motor driving unit. The external input output unit and the keyboard input unit are connected with the control unit. The permanent magnet synchronous motor driver adopts the permanent magnet synchronous motor on an electric multiple unit high speed train, so the power consumption is reduced, the control precision is improved, the volume is reduced, the complex later maintenance is avoided, and the operation efficiency is improved. The adjacent external door linkage between adjacent units is realized in a circuit way, so the stability is high.

Description

Permanent magnet synchronous motor driver for power unitized compound high-speed train electric door

The present invention relates to a train control device, and more particularly to a permanent magnet synchronous motor driver for a power unitized compound high speed train electric door.

With the rapid development of the rail transit industry, the power unitized compound high-speed train (EMU) has achieved unprecedented rapid development. The high-speed train models represented by the CRH series models are widely used in various regions, and they are equipped with high-speed, comfortable and constant temperature. Car environment.

In order to meet the need to isolate the car due to emergency, reduce the energy consumption of the car air conditioner, and save energy, the car of the high-speed train is closed and separated by the outer door near the junction of the two cars, and the passengers can pass through the adjacent ones. The outer door of each of the two cars realizes the movement of different cars. At the same time, there is an internal door isolation between the passenger seat inside each compartment and the bathroom, the tea stove room and the crew office. Since a single car is a front and rear symmetrical structure, a single car generally has four end doors, two outer end doors (front and rear of the car) and two inner end doors.

In the prior art, the door control device of the train door can realize the opening and closing of the outer door and the inner door of the train. The door control device specifically includes a manual type and an automatic switch type.

The manual door control unit has no power unit and is fully open or closed by manual force.

The automatic switch-type door control device is powered by a motor to drive the opening and closing of the door mechanism. The motor of the automatic switch type of door control device includes various forms, usually an AC asynchronous motor and a DC brush motor.

The advantage of the AC non-synchronous motor is that it is free of maintenance, but the control precision is low, the volume is large, and the energy consumption is high. Since the size of the AC asynchronous motor is large, the corresponding required space for the car is also large. Since the AC asynchronous motor is usually installed at the top of the car door and the height of the car body is fixed, the effective height of the door will be Reduced, space utilization is reduced, which in turn affects the comfort level of passengers passing through the door and reduces the efficiency of traffic.

In the prior art, the train is more commonly used as a DC brush motor. Compared with the AC asynchronous motor, the DC brush motor has the advantages of small volume, high efficiency, and mature control mode, but the disadvantage is that the carbon brush needs to be replaced in the later maintenance. Brushes for DC brush motors include graphite brushes, electrochemical graphite brushes or metal graphite brushes. During its operation, the friction between the collector ring of the brushed motor and the brush causes the brush to wear. When the wear is severe, the motor will generate sparks and reduce the efficiency during operation. Although the material of the brush is constantly being updated, it still faces the problem of regular inspection and replacement. Especially when DC brushed motors are used in power unitized compound high-speed trains, the maintenance requirements are even more demanding.

During maintenance, the whole train needs to be put into the warehouse for repair. First, the door panel is removed, and then the carbon brush is inspected and replaced. Then the door panel is reassembled, the bicycle is debugged, and then the vehicle is debugged and returned to the track. It can be seen that the maintenance and maintenance cost of the power unitized composite high-speed train using the DC brush motor is far higher and the material cost, the maintenance timeliness is poor, and the cost performance is low.

The technical problem solved by this creation is to realize the application of the permanent magnet synchronous motor in the power unitized compound high-speed train, and improve the safety and stability.

Furthermore, the maintenance and maintenance of the power unitized compound high-speed train is simpler and the maintenance cost is reduced.

Further, the outer end doors adjacent to the two cars of the power unitized compound high-speed train are linked.

In order to solve the above problems, the present invention discloses a permanent magnet synchronous motor driver for a power unitized compound high speed train electric door, comprising:

control unit;

a motor drive unit for driving a permanent magnet synchronous motor;

a power supply unit for supplying power to the motor drive unit;

An external input/output unit for inputting or outputting signals;

Keyboard input unit;

The motor drive unit is connected to the control unit, the power supply unit is connected to the motor drive unit, and the external input/output unit and the keyboard input unit are both connected to the control unit.

The control unit includes a DSP microprocessor.

The DI contact set in the external I/O unit uses an optocoupler.

The motor driving unit comprises a resistor, a photocoupler, a diode, a fuse and a shorting switch. One end of the resistor is connected to the power unit, the other end of the resistor is connected to the anode of the input end of the optocoupler, and the collector pin of the output end of the optocoupler is connected. Connected to the control unit, the emitter pin of the output of the optocoupler is grounded digitally, the negative terminal of the input end of the optocoupler is connected to the positive pole of the diode, the negative pole of the diode is connected to the fuse, and the fuse is connected to one end of the short switch, shorted The other end of the switch is connected to the power ground.

The fuses of the two motor drive units of the adjacent outer end gates of two adjacent cars of the power unitized compound high speed train are connected in series with each other and the power supply grounds are also connected in series with each other.

The drive also includes a display unit.

The drive also includes a communication unit for downloading or uploading data, and the communication unit is connected to the control unit.

The technical solution of the creation realizes the use of a permanent magnet synchronous motor on the power unitized compound high-speed train, which reduces the energy consumption, improves the control precision, reduces the volume, avoids complicated post-maintenance, and improves the operation efficiency. In addition, the linkage of the adjacent outer door of the adjacent car is realized by the circuit mode, and the stability is high, thereby avoiding the circuit damage that may be caused by the communication in the prior art. In addition, the entire circuit system of the present invention has strong anti-interference performance and high security.

10‧‧‧ Permanent Magnet Synchronous Motor Driver

11‧‧‧Control unit

12‧‧‧Motor drive unit

121, 122‧‧‧ circuits

13‧‧‧Power unit

14‧‧‧External input and output unit

15‧‧‧Communication unit

16‧‧‧Keyboard input unit

17‧‧‧ Permanent Magnet Synchronous Motor Unit

18‧‧‧Display unit

1211, 1221‧‧‧ Short-circuit switch

R‧‧‧resistance

PHOTO‧‧‧Optocoupler

DIODE‧‧‧ Diode

Fuse‧‧‧Fuse

GND_POWER‧‧‧Power Ground

Figure 1 shows the overall structure of a power unitized compound high-speed train;

2 is a schematic structural view of a permanent magnet synchronous motor driver of an electric gate of a power unitized compound high-speed train;

3 is a schematic structural view of a permanent magnet synchronous motor driver of an electric gate of a power unitized compound high-speed train;

FIG. 4 is a schematic diagram of the linkage circuit of the present creation.

The permanent magnet synchronous motor is a DC brushless motor, which has the advantages of low energy consumption, high control precision, small volume and maintenance-free. Especially if it is applied in a power unitized compound high-speed train, the train in the prior art can be completely avoided. The vehicle is in storage for repair, the door panel is removed, the carbon brush is replaced, the door panel is reassembled, the bicycle is commissioned, and then the vehicle is commissioned to return to the cumbersome maintenance process and maintenance cost of the track.

However, in order to realize the application of the permanent magnet synchronous motor in the power unitized compound high-speed train, it is necessary to design a special driver for the permanent magnet synchronous motor to drive the permanent magnet synchronous motor.

FIG. 1 is a diagram showing the overall structure of a power unitized compound high-speed train, and the prior art portion of the figure that is not related to the technical solution of the present invention is not shown. The unitary structure includes a plurality of drives (permanent magnet synchronous motor drives), a plurality of permanent magnet synchronous motor units, and a plurality of train doors. Each permanent magnet synchronous motor unit is driven by its corresponding driver. Each of the permanent magnet synchronous motor units one-to-one corresponds to powering a train door, and the train door may be an outer door or an inner door. In one embodiment, all of the drives can be coupled to the train center control system to communicate with the train center control system.

FIG. 2 is a schematic structural view of a permanent magnet synchronous motor driver of an electric gate of a power unitized compound high-speed train. The permanent magnet synchronous motor driver 10 includes a control unit 11, a motor drive unit 12, a power supply unit 13 for supplying power to the motor drive unit 12, an external input/output unit 14 for inputting or outputting signals, and for downloading or uploading data. The communication unit 15 and the keyboard input unit 16. The permanent magnet synchronous motor driver 10 is used to drive the permanent magnet synchronous motor unit 17. The motor driving unit 12 is respectively connected to the control unit 11 and the permanent magnet synchronous motor unit 17, and the power unit 13 is connected to the motor driving unit 12, and the external input/output unit 14, the keyboard input unit 16, and the communication unit 15 are both It is connected to the control unit 11.

The control unit 11 controls other units connected thereto. The control unit 11 can specifically employ a DSP microprocessor, or other microprocessor. The communication unit 15 can realize the connection between the control unit 11 and the train central control system, or the control unit 11 and other control devices, and the communication unit 15 can download data, instructions, etc. from the train central control system, and can upload permanent magnets. The relevant data parameters of the synchronous motor drive 10 are sent to the train central control system. The keyboard input unit 16 is for providing input data to the control unit 11. The external input and output unit 14 is for interacting with the passenger, displaying the current state of the driver and facilitating the passenger to trigger a certain function. For example, the external input and output unit 14 may include a door opening button and a train door status indicator light, which the passenger can trigger by clicking the door opening button. When the train door is opened, the train door status indicator light can indicate whether the train door is currently open, closed or open, so that the passenger can quickly pass through the door. The motor drive unit 12 is for driving the permanent magnet synchronous motor unit 17 in accordance with an instruction of the control unit 11. The power supply unit 13 is configured to receive an input voltage and process the power to the motor drive unit 12. The power supply unit 13 has a wide voltage design. Even if the input voltage fluctuates greatly, the power supply unit 13 can ensure that the entire drive is in the The input voltage is still operating normally between 18-36V, which greatly improves the stability of the entire drive.

Another embodiment of the present invention is shown in FIG. 3, wherein the permanent magnet synchronous motor driver 10 further includes a display unit 18 for displaying partial parameter information on the basis of FIG. In addition, the permanent magnet synchronous motor unit 17 further includes a permanent magnet synchronous motor, an encoder and a speed reduction mechanism, and a load.

The encoder is used to measure the actual rotational speed of the permanent magnet synchronous motor by non-contact measurement of the rotating magnetic field, and the rotational speed is provided to the control unit 11 in the form of communication, so that the control unit monitors the instantaneous working parameters of the permanent magnet synchronous motor. This non-contact measurement can effectively improve the system's resistance to vibration and heat, and improve its stability.

When a passenger needs to pass from one car to another adjacent car, it is necessary to pass two outer door doors adjacent to the two cars, and if the passenger clicks the door opening button, the two outer door can be opened at the same time, that is, The linkage of these two external doors can greatly improve the passenger experience and improve the convenience. In fact, in the prior art, it has been realized that the drivers of the two doors are linked by means of transmitting a communication signal, and when one door is opened, a communication signal is sent to notify another adjacent door to be opened, but to communicate. The biggest problem with the way to achieve linkage is that the stability is poor. When the voltages of two adjacent cars are not equal, sending communication signals to each other will cause partial circuit failure or even damage.

This creation provides a technical solution to achieve linkage directly with the control circuit, which can greatly improve the stability and avoid the loss caused by the pressure difference. Please refer to FIG. 4 for a schematic diagram of the linkage circuit of the present creation.

The linkage circuit of the motor drive unit 12 of the respective driver of the two adjacent outer end doors of two adjacent cars is depicted in FIG. The circuit 121 shown in the figure is located in the motor drive unit 12 of the drive of the car A, and the circuit 122 is located in the motor drive unit 12 of the drive of the car A, both of which are identical in construction.

The circuit 121 includes a resistor R, a photocoupler PHOTO, a diode DIODE, a fuse Fuse, and a shorting switch 1211. The circuit 122 includes a resistor R, a photocoupler PHOTO, a diode DIODE, a fuse Fuse, and a shorting switch 1221.

Taking the circuit 121 as an example, the resistor R receives the power supply voltage (24V) from the power supply unit 13, and the other end of the resistor R is connected to the anode of the input end of the photocoupler PHOTO, and the collector pin of the output end of the photocoupler PHOTO (eg In the figure, D11 is connected to the control unit 11, and the collector pin of the output end of the photocoupler PHOTO receives the system voltage (3V3) through another resistor R. The emitter of the output of the photocoupler PHOTO is connected. The pin is grounded to DGND, the negative terminal of the input end of the photocoupler PHOTO is connected to the positive pole of the diode DIODE, the negative pole of the diode DIODE is connected to the fuse Fuse, and the fuse Fuse is connected to one end of the shorting switch 1221, the short circuit The other end of the switch 1221 is connected to the power ground GND_POWER.

When the shorting switch 1221 is closed, the power supply voltage of the circuit 121 is grounded, the optical coupler PHOTO is turned on, and the triggering control unit 11 issues a start signal to drive the permanent magnet synchronous motor to operate, and realize the opening of the outer end door corresponding to the circuit 121. . When the shorting switch 1221 is turned off, the circuit 121 is suspended, and the input end and the output end of the photocoupler PHOTO are isolated from each other, and the corresponding permanent magnet synchronous motor cannot be driven to operate. Circuit 122 operates in the same manner as circuit 121.

Further, the fuses Fuse of the circuit 121 and the circuit 122 are connected in series to each other and the respective power source grounds GND_POWER are also connected in series. This allows the other circuit to also ground the supply voltage and the optocoupler when the shorting switch of either one of the circuit 121 and the circuit 122 is closed. That is to say, as long as the shorting switch in one drive achieves closing, both drivers drive their corresponding permanent magnet synchronous motors, so that the corresponding doors are interlocked.

The circuit 121 and the circuit 122 are respectively used to control adjacent outer end doors of two adjacent cars, and the shorting switches 1211 and 1221 are also respectively located next to adjacent outer end doors of two adjacent cars, and are controlled by passengers. Close or open. Then, when the passenger A wants to walk to the adjacent compartment B, the door opening button (short-switch) next to the outer door of the compartment A can be clicked to open two adjacent outer doors of the two compartments to ensure that the two adjacent outer doors of the two compartments are opened. Passengers passed smoothly.

The circuit 121 and the diode DIODE and the fuse Fuse in the circuit 122 play a double protection role. When the power of the circuit 122 surges into the circuit 121, it can be blocked by the reverse cut-off property of the diode DIODE. In addition, when the power exceeds the threshold, the fuse Fuse can be automatically blown to protect the overall circuit.

On the other hand, through the optocoupler PHOTO, the input end circuit and the output end circuit can be isolated, mutual interference is avoided, and they are independent of each other, thereby improving the anti-interference performance of the entire circuit system. In fact, the DI (digital input) contact set in the external input/output unit can use an optical coupler to transmit electrical signals in the light medium, and has good isolation effect on the input and output electrical signals.

In addition, for the inner end door that does not need to open the door, the motor drive unit of the driver can directly use the circuit 121 to open the door, and the short switch is directly connected to the power ground GND_POWER, and does not need to be connected in series with other components.

The above technical solution of the present invention can be specifically applied to a power unitized compound high-speed train, in particular, a CRH5 type train.

The technical solution of the creation realizes the use of a permanent magnet synchronous motor on the power unitized compound high-speed train, which reduces the energy consumption, improves the control precision, reduces the volume, avoids complicated post-maintenance, and improves the operation efficiency. In addition, the creation can also realize the linkage of the adjacent outer door of the adjacent car through the circuit mode, and the stability is high, and the circuit damage which may be caused by the communication mode in the prior art is avoided. In addition, the entire circuit system of the present invention has strong anti-interference performance and high security.

11‧‧‧Control unit

12‧‧‧Motor drive unit

13‧‧‧Power unit

14‧‧‧External input and output unit

15‧‧‧Communication unit

16‧‧‧Keyboard input unit

17‧‧‧ Permanent Magnet Synchronous Motor Unit

Claims (7)

A permanent magnet synchronous motor driver for a power unitized compound high speed train electric door, comprising:
a control unit;
Using a motor drive unit for driving the permanent magnet synchronous motor;
a power supply unit for supplying power to the motor drive unit;
An external input/output unit for inputting or outputting a signal; and a keyboard input unit;
The motor driving unit is connected to the control unit, and the power unit is connected to the motor driving unit, and the external input and output unit and the keyboard input unit are both connected to the control unit. The permanent magnet synchronous motor driver of claim 1, wherein the control unit comprises a DSP microprocessor. The permanent magnet synchronous motor driver according to claim 1, wherein the DI contact provided in the external input/output unit adopts an optical coupler. The permanent magnet synchronous motor driver according to claim 1 or 2 or 3, wherein the motor driving unit comprises a resistor, an optical coupler, a diode, a fuse and a shorting switch, the resistor One end of the resistor is connected to the power supply unit, and the other end of the resistor is connected to the anode of the input end of the optocoupler. The collector pin of the output end of the optocoupler is connected to the control unit, and the emitter pin of the output end of the optocoupler is digitally connected. Grounding, the negative pole of the input end of the optocoupler is connected to the anode of the diode, the cathode of the diode is connected to the fuse, the fuse is connected to one end of the shorting switch, and the other end of the shorting switch is connected to the power ground. The permanent magnet synchronous motor driver according to claim 4, wherein the fuses of the two motor drive units of the adjacent outer end doors of two adjacent cars of the power unitized composite high-speed train are connected in series with each other and The power grounds are also connected in series. The permanent magnet synchronous motor driver of claim 1, wherein the driver further comprises a display unit. The permanent magnet synchronous motor driver of claim 1, wherein the driver further comprises a communication unit for downloading or uploading data, the communication unit being coupled to the control unit.