CN109532570B - A Three-phase Power Supply Control System for Short Stator Trains - Google Patents

Abstract

The invention discloses a three-phase power supply control system for short stator trains, and relates to the technical field of train power supply and operation control. It includes AC-DC-AC frequency conversion and voltage conversion device installed on the ground, power supply rail, induction plate, running rail, vehicle-mounted current collector installed on the train, vehicle-mounted three-phase drive winding, and vehicle-mounted rectifier energy storage device; the power supply rail is divided into the first power supply rail and the second power supply rail, and form a three-phase AC power supply circuit with the grounded running rail; the induction plate and the three-phase drive winding of the train work inductively; The three-phase driving winding is powered, and the AC-DC-AC frequency conversion and voltage conversion device on the ground is used for frequency modulation and voltage regulation power supply to realize the three-phase drive and operation control of the train; the on-board rectifier energy storage device supplies power to the auxiliary electrical equipment of the train.

Description

A Three-phase Power Supply Control System for Short Stator Trains

technical field

The invention relates to the technical field of train power supply and operation control.

Background technique

Current short stator trains (also known as linear motor trains) are powered by a DC power supply system. On a train, electrical equipment occupies an important position, the most important of which is the transmission system. The current short stator train transmission system is composed of an on-board inverter and a drive winding (short stator) in series, and the purpose of driving the train and speed regulation is achieved by adjusting the frequency and voltage of the drive winding. This process is called train driving. Usually, in reality, train driving is done by human operators, and a few are automatically driven. There are some problems here: First, in the electrical equipment of the train, the transmission system occupies an absolute weight, and its weight is large and the volume is large; Occupy more valuable space in the train, reduce power density and efficiency; second, intelligent control and automatic driving (ATC) is the only way to replace manual driving, but in the current train and power supply mode, the execution equipment required for driving is installed in the On the train, the train is moving, even at a high speed, and the command and organization of the automatic driving (ATC) comes from the ground control center, the two cannot be directly connected, and a wireless system is required, and the wireless system fails or fails Certain security risks will be caused.

The technical problem to be solved now is, on the one hand, save the on-board inverter, reduce the weight of on-board electrical equipment, reduce the axle load, realize the light weight of the train, improve the load-carrying efficiency of the train, increase the power density, and adapt to higher speed operation; On the one hand, the automatic control and driverless operation of the train can be directly realized through ground power supply.

Contents of the invention

The purpose of the present invention is to provide a three-phase power supply control system for short stator trains. By changing the power supply mode of the system and optimizing the system structure, the axle load can be effectively reduced, the load-bearing efficiency of the train can be improved, the power density can be increased, and the operation at a higher speed can be adapted. The automatic control and unmanned driving of the train operation can be directly realized through the ground power supply.

The object of the present invention is achieved through the following technical solutions: a three-phase power supply control system for short stator trains, including running rails, power supply rails laid in parallel with the running rails, vehicle-mounted collectors arranged on the train, and vehicle-mounted three-phase drive Windings, vehicle-mounted rectification energy storage device; an induction plate is provided between the running rail and the power supply rail, and the power supply rail includes a first power supply rail and a second power supply rail; the first power supply rail, the second power supply rail The power supply rail and the running rail constitute a three-phase AC power supply circuit, which is powered by an AC-DC-AC frequency conversion and voltage conversion device installed on the ground; the power supply rail is divided into a first power supply rail and a second power supply rail; the first power supply rail, The second power supply rail and the running rail form a three-phase AC power supply circuit, which is powered by an AC-DC-AC frequency conversion and voltage conversion device on the ground; the running rail is grounded; the vehicle-mounted collector includes a first collector and a second collector , the third current collector, the tail ends of which are respectively connected to the three-phase terminals of the three-phase drive winding on the train, and the front ends of which are respectively in contact with the first power supply rail, the second power supply rail and the running rail to receive electricity; The DC/AC frequency conversion and voltage conversion device supplies power to the vehicle-mounted three-phase drive winding of the train through the first power supply rail and the first collector, the second power supply rail and the second collector, the running rail and the third collector, and controls the AC/DC The frequency modulation and voltage regulation of the frequency conversion and voltage conversion device are used to control the start, stop and operation of the train; the three-phase AC terminal of the vehicle-mounted rectifier energy storage device is connected to the three-phase terminal of the vehicle-mounted three-phase drive winding, and its DC terminal is connected to the auxiliary Electrical equipment connection.

Preferably, the running rail is divided into a first running rail and a second running rail connected in parallel with the first running rail. The first power supply rail and the second power supply rail are laid on the sleeper or ballast bed between the first running rail and the second running rail, and the two are connected in parallel through wires; the first power supply rail and the second power supply rail are It is divided into several sections, and each section is powered by an independent AC-DC-AC frequency conversion and voltage conversion device.

Preferably, the induction board is divided into a first induction board and a second induction board; the first induction board is laid between the first running rail and the power supply rail, and the second induction board is laid on the Between the second running rail and the power supply rail; the first induction plate and the second induction plate are set corresponding to the vehicle-mounted three-phase drive winding of the train, and the induction works.

Preferably, the auxiliary electrical equipment of the train mainly includes train air conditioners, lighting, etc.; the auxiliary electrical equipment and the on-board rectifying energy storage device adopt the same voltage level.

Further preferably, the vehicle-mounted current collectors are all arranged at the end of the train bogie and insulated from the train bogie, and the first current collector, the second current collector and the third current collector of the vehicle-mounted current collector are mutually insulated.

Compared with prior art, the beneficial effect of the present invention is:

1. The two power supply rails and the running rail (which can be grounded) constitute a three-phase AC power supply circuit, and the AC-DC-AC frequency conversion and voltage conversion device on the ground supplies power to the three-phase drive winding of the train through the three-phase AC power supply circuit, realizing the optimum power supply structure and power supply mode of the system Optimization, canceling the on-board inverter, effectively reducing the axle load, realizing the light weight of the train, increasing the power density, and improving the load efficiency of the train.

2. The three-phase AC power supply circuit is used to supply power to the three-phase drive winding of the train through the AC-DC-AC frequency conversion and voltage conversion device on the ground, and the automatic control of the drive and operation of the train is directly carried out through frequency modulation and voltage regulation, so as to realize unmanned driving and intelligent control and operation.

3. Low cost and good economic performance.

4. The ground AC-DC-AC frequency conversion and voltage conversion device does not generate negative sequence current in the grid to ensure power quality.

5. Advanced technology, superior performance and easy implementation.

Description of drawings

FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of Embodiment 2 of the present invention.

Implementation

In order to better understand the creative idea of the present invention, the working principle of the present invention is briefly described as follows: compared with the existing short stator train, the on-board inverter can be eliminated, the axle load of the train can be effectively reduced, the power density and load-carrying efficiency can be improved, and the system The optimization of the power supply structure and power supply mode, through the frequency modulation and voltage regulation of the three-phase AC power supply circuit on the ground, supplies power to the three-phase drive winding of the train to directly realize the driving and operation control of the train, and realize unmanned driving. Power supply for train auxiliary electrical equipment. The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Figure 1, the embodiment of the present invention provides a three-phase power supply control system for short stator trains, the system includes an AC-DC-AC frequency conversion and voltage conversion device 3 arranged on the ground, a power supply rail 1, arranged on the running rail R and The induction plate 7 between the power supply rails 1, the running rail R, the vehicle-mounted current collector 2, the vehicle-mounted three-phase drive winding 5, and the vehicle-mounted rectification energy storage device 6 arranged on the train 4; The rail 1, the running rail R and the on-board collector 2 supply power to the on-board three-phase drive winding 5 and the on-board rectifying energy storage device 6; the power supply rail 1 is divided into a first power supply rail 1a and a second power supply rail 1b; the first The power supply rail 1a, the second power supply rail 1b and the running rail R form a three-phase AC power supply circuit, which is powered by the AC-DC-AC frequency conversion and voltage conversion device 3 on the ground; the running rail R is grounded; the vehicle collector 2 includes The first current collector 2a, the second current collector 2b, and the third current collector 2c have tail ends respectively connected to the three-phase terminals of the three-phase drive winding 5 on board the train 4, and their front ends are respectively connected to the first power supply rail 1a, the The second power supply rail 1b and the running rail R contact and receive power; the AC-DC-AC frequency conversion and transformation device 3 passes through the first power supply rail 1a and the first collector 2a, the second power supply rail 1b and the The second current collector 2b, the running rail R and the third current collector 2c supply power to the three-phase drive winding 5 mounted on the train 4, and control the train by controlling the frequency modulation and voltage regulation of the AC-DC-AC frequency conversion and voltage conversion device 3 4 start-stop and operation; the three-phase AC terminal of the vehicle-mounted rectifying energy storage device 6 is connected to the three-phase terminal of the vehicle-mounted three-phase drive winding 5, and its DC terminal is connected to the auxiliary electrical equipment (not shown in the figure out, the same below).

The running rail R is divided into a first running rail R1 and a second running rail R2 connected in parallel with the first running rail R1. The first power supply rail 1a and the second power supply rail 1b are laid on a sleeper or a track bed between the first running rail R1 and the second running rail R2.

In the embodiment of the present invention, the induction board 7 is divided into a first induction board 7a and a second induction board 7b; the first induction board 7a is laid between the first running rail R1 and the power supply rail 1 , the second induction plate 7b is laid between the second running rail R2 and the power supply rail 1; the first induction plate 7a and the second induction plate 7b are connected with the vehicle-mounted three-phase drive winding 5 correspondence, induction work.

The auxiliary electrical equipment of the train 4 mainly includes train air conditioners, lighting, etc.; the auxiliary electrical equipment and the on-board rectifying energy storage device 6 adopt the same voltage level.

The vehicle-mounted current collectors 2 are installed on the end of the train 4 bogie and are insulated from the bogie of the train 4, and the first current collector 2a, the second current collector 2b and the third current collector 2c of the vehicle-mounted current collector 2 are mutually insulated .

The AC-DC-AC frequency conversion and voltage conversion device is powered by the three-phase cable of the substation.

Example

As shown in Figure 2, a three-phase power supply control system for short stator trains, the system includes an AC-DC-AC frequency conversion and voltage conversion device 3 arranged on the ground, a power supply rail 1, a running rail R, and is arranged on the running rail R and the The induction plate 7 between the power supply rails 1, the vehicle-mounted current collector 2, the vehicle-mounted three-phase drive winding 5, and the vehicle-mounted rectification energy storage device 6 arranged on the train 4; and the vehicle-mounted collector 2 supply power to the vehicle-mounted three-phase drive winding 5 and the vehicle-mounted rectifier energy storage device 6; the power supply rail 1 is divided into a first power supply rail 1a and a second power supply rail 1b; the first power supply rail 1a, the The second power supply rail 1b and the running rail R form a three-phase AC power supply circuit, which is powered by the AC-DC-AC frequency conversion and voltage conversion device 3 on the ground; the running rail R is grounded; the vehicle-mounted collector 2 includes a first collector 2a, The second current collector 2b and the third current collector 2c have their tail ends respectively connected to the three-phase terminals of the three-phase drive winding 5 on board the train 4, and their front ends are respectively connected to the first power supply rail 1a and the second power supply rail 1b Contact with the running rail R to receive electricity; the AC-DC-AC frequency conversion and voltage conversion device 3 passes through the first power supply rail 1a and the first current collector 2a, the second power supply rail 1b and the second current collector 2b, the running rail R and the third current collector 2c supplies power to the on-board three-phase drive winding 5 of the train 4, and controls the start-stop and operation of the train 4 by controlling the frequency modulation and voltage regulation of the AC-DC-AC frequency conversion and voltage conversion device 3; The AC terminal is connected to the three-phase terminal of the vehicle-mounted three-phase drive winding 5, and its DC terminal is connected to the auxiliary electrical equipment.

The running rail R is divided into a first running rail R1 and a second running rail R2 connected in parallel with the first running rail R1. The first power supply rail 1a and the second power supply rail 1b are laid on a sleeper or a track bed between the first running rail R1 and the second running rail R2.

In the embodiment of the present invention, the induction board 7 is divided into a first induction board 7a and a second induction board 7b; the first induction board 7a is laid between the first running rail R1 and the power supply rail 1 , the second induction plate 7b is laid between the second running rail R2 and the power supply rail 1; the first induction plate 7a and the second induction plate 7b are connected with the vehicle-mounted three-phase drive winding 5 corresponds to the setting, and the induction works.

The auxiliary electrical equipment of the train 4 mainly includes train air conditioners, lighting, etc.; the auxiliary electrical equipment and the on-board rectifying energy storage device 6 adopt the same voltage level.

The vehicle-mounted current collectors 2 are installed on the end of the train 4 bogie and are insulated from the bogie of the train 4, and the first current collector 2a, the second current collector 2b and the third current collector 2c of the vehicle-mounted current collector 2 are mutually insulated .

The AC-DC-AC frequency conversion and voltage conversion device is powered by the three-phase cable of the substation.

The main difference between the embodiment of the present invention and the first embodiment above is that the first power supply rail 1a and the second power supply rail 1b are divided into several segments, and each segment is powered by an independent AC-DC-AC frequency conversion and voltage conversion device 3 to Realize the subsection control of train 4 operation. In the specific embodiment of the present invention, two adjacent segments are recorded as segment i and segment i+1 (i is greater than or equal to 1), and each segment is powered by an independent AC-DC-AC frequency conversion and voltage conversion device 3, which is convenient for segmentation Control the train4. In order to ensure the safety and controllability of trains, generally, each section is limited to one train.

In summary, by changing the power supply mode of the system and optimizing the system structure, the present invention can effectively reduce the weight of the on-board equipment, effectively reduce the axle load, realize the lightweight of the train, improve the carrying efficiency of the train, increase the power density, and adapt to higher speed operation At the same time, the automatic control and unmanned driving of the train operation can be directly realized through the ground power supply.

Claims (5)

1. A three-phase power supply control system of a short stator train comprises a running rail (R), a power supply rail (1) paved in parallel with the running rail (R), a vehicle-mounted current collector (2), a vehicle-mounted three-phase driving winding (5) and a vehicle-mounted rectifying energy storage device (6) which are arranged on the train (4); the method is characterized in that: an induction plate (7) is arranged between the running rail (R) and the power supply rail (1), and the power supply rail (1) comprises a first power supply rail (1 a) and a second power supply rail (1 b); the first power supply rail (1 a), the second power supply rail (1 b) and the running rail (R) form a three-phase alternating current power supply loop, and power is supplied by an alternating current-direct current variable frequency transformer (3) arranged on the ground; the running rail (R) is grounded; the vehicle-mounted current collector (2) comprises a first current collector (2 a), a second current collector (2 b) and a third current collector (2 c), the tail ends of the first current collector, the second current collector and the third current collector are respectively connected with three-phase terminals of a vehicle-mounted three-phase driving winding (5) of the train (4) through cables, and the front ends of the third current collector, the second current collector and the third current collector are respectively in contact with the first power supply rail (1 a), the second power supply rail (1 b) and the running rail (R) for receiving power; the AC-DC-AC variable frequency and voltage device (3) supplies power to a vehicle-mounted three-phase driving winding (5) of the train (4) through the first power supply rail (1 a) and the first current collector (2 a), the second power supply rail (1 b) and the second current collector (2 b), the running rail (R) and the third current collector (2 c), and controls the start-stop and the running of the train (4) by controlling the frequency modulation and the voltage regulation of the AC-DC-AC variable frequency and voltage device (3); the three-phase alternating current terminal of the vehicle-mounted rectifying and energy-storing device (6) is connected with the three-phase terminal of the vehicle-mounted three-phase driving winding (5), and the direct current terminal of the vehicle-mounted rectifying and energy-storing device is connected with auxiliary electric equipment.

2. The short stator train three-phase power supply control system according to claim 1, wherein: the running rails (R) comprise a first running rail (R1) and a second running rail (R2) which is connected in parallel with the first running rail (R1).

3. A short stator train three-phase power supply control system according to claim 2, characterized in that: the first power supply rail (1 a) and the second power supply rail (1 b) are paved on a sleeper or a track bed between the first running rail (R1) and the second running rail (R2); the first power supply rail (1 a) and the second power supply rail (1 b) are provided with sections according to train operation intervals, and each section is powered by an independent AC-DC-AC variable-frequency transformer (3).

4. A short stator train three-phase power supply control system according to claim 2, characterized in that: the induction plate (7) is divided into a first induction plate (7 a) and a second induction plate (7 b); the first induction plate (7 a) is paved between the first running rail (R1) and the power supply rail (1), and the second induction plate (7 b) is paved between the second running rail (R2) and the power supply rail (1); the first induction plate (7 a) and the second induction plate (7 b) are arranged corresponding to the vehicle-mounted three-phase driving winding (5) of the train (4), and are used for induction work.

5. The short stator train three-phase power supply control system according to claim 1, wherein: the vehicle-mounted current collectors (2) are arranged at the end heads of the bogie of the train (4) and are insulated from the bogie of the train (4), and the first current collector (2 a), the second current collector (2 b) and the third current collector (2 c) of the vehicle-mounted current collectors (2) are mutually insulated.

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