CN205754003U

CN205754003U - A kind of motor-car ground power supply

Info

Publication number: CN205754003U
Application number: CN201620670368.3U
Authority: CN
Inventors: 张翠英; 柯少强
Original assignee: Chengdu Mechanical & Electrical Equipment Co Ltd Southwest Jiaotong University
Current assignee: Chengdu Mechanical & Electrical Equipment Co Ltd Southwest Jiaotong University
Priority date: 2016-06-28
Filing date: 2016-06-28
Publication date: 2016-11-30
Anticipated expiration: 2026-06-28

Abstract

nullThe utility model discloses a kind of motor-car ground power supply，Including central processing unit、Current rectifying and wave filtering circuit、SVPWM Waveform generator、First full bridge inverter and the second full bridge inverter，Current rectifying and wave filtering circuit is connected to three phase worker power input，The IGCT of the left brachium pontis of the first full bridge inverter、The IGCT of the left brachium pontis of the second full bridge inverter is connected with a SVPWM waveform outfan respectively，The IGCT of the right brachium pontis of the first full bridge inverter、The IGCT of the right brachium pontis of the second full bridge inverter is connected with the 2nd SVPWM waveform outfan respectively，The outfan of the first full bridge inverter connects the first isolating transformer，The outfan of the second full bridge inverter connects the second isolating transformer，The outfan of the first isolating transformer and the outfan of the second isolating transformer are connected with single phase poaer supply outfan after being connected in parallel.Motor-car ground power supply of the present utility model, it is adaptable to the maintenance of motor-car and debugging, output is stablized and safety.

Description

A kind of motor-car ground power supply

Technical field

This utility model belongs to power technique fields, is specifically related to a kind of motor-car ground power supply.

Background technology

Along with the development of high-speed rail technology, various high speed motor cars have spread all over each place, and motor-car is owing to travelling Speed is fast, and the most once security incident occurs in motor-car, and consequence is difficult to the imagination.Motor-car needs to do timing maintenance, by every safety Test, the most just can be continuing with.But when motor car inspection and repair or debugging, common power frequency three-phase electricity, due to instability, is difficult to Reach to overhaul the demand of motor-car.

Utility model content

The purpose of this utility model is: for problem present in existing technology, it is provided that a kind of motor-car ground power supply, It is adapted to existing various EMUs in storehouse, enters surface power supply and the requirement of debugging when debugging.

To achieve these goals, the technical solution adopted in the utility model is:

A kind of motor-car ground power supply, including central processing unit, current rectifying and wave filtering circuit, SVPWM Waveform generator, the first full-bridge Inverter circuit and the second full bridge inverter, current rectifying and wave filtering circuit, the first full bridge inverter and the second full bridge inverter depend on Secondary being connected in parallel, current rectifying and wave filtering circuit is connected to three phase worker power input, and described SVPWM Waveform generator has first SVPWM waveform outfan and the 2nd SVPWM waveform outfan are the IGCT of left brachium pontis of the first full bridge inverter, second complete The IGCT of the left brachium pontis of bridge inverter circuit is connected with a SVPWM waveform outfan respectively, the right side of the first full bridge inverter The IGCT of brachium pontis, the IGCT of right brachium pontis of the second full bridge inverter are connected with the 2nd SVPWM waveform outfan respectively, and The outfan of one full bridge inverter connects the first isolating transformer, and the outfan of the second full bridge inverter connects second Isolating transformer, the outfan of the first isolating transformer and the outfan of the second isolating transformer are connected in parallel rear and single phase poaer supply Outfan connects；

Be respectively connected with on each circuitry phase between described current rectifying and wave filtering circuit and three phase worker power input for The input current transformer of input current acquisition；

The outfan of the first described isolating transformer and the outfan of the second isolating transformer are connected in parallel rear with single-phase The output end current transformer gathered for output end current it is provided with on circuit between power output end；

Described single phase poaer supply outfan is also parallel with the voltage feedback transformer for gathering output end voltage；

It is mutual that described central processing unit connects SVPWM Waveform generator, input current transformer, output end current respectively Sensor and voltage feedback transformer.

Preferably, the outfan of the first described isolating transformer and the outfan of the second isolating transformer are the most in parallel There is filter capacitor.

Owing to have employed technique scheme, the beneficial effects of the utility model are:

A kind of motor-car ground power supply of the present utility model, three phase worker power is passed through by current rectifying and wave filtering circuit, inverter circuit After the conversion of AC-DC-AC, form the single-phase alternating current of stable output so that power supply output is more reliable and more stable, it is possible to meet dynamic Vehicle overhauling and debugging use；It is provided with central processing unit simultaneously, can the current signal of Real-time Collection feedback and voltage signal, and root Make according to current signal and voltage signal and processing timely, during debugging and reorganizing and outfit, arbitrary fault, centre once occur Reason device will disconnect current supply circuit, protection power supply and electricity system so that electricity consumption is safer the very first time.

Accompanying drawing explanation

Fig. 1 is the circuit theory diagrams of motor-car ground power supply of the present utility model.

Fig. 2 is the electrical schematic diagram of motor-car ground power supply of the present utility model.

Fig. 3 is SVPWM Waveform generator structure diagram of the present utility model.

Reference:

1-three phase worker power input, 2-input current transformer, 3-current rectifying and wave filtering circuit, 4-the first full-bridge inverting Circuit, 5-the second full bridge inverter, 6-the first isolating transformer, 7-the second isolating transformer, 8-filter capacitor, 9-voltage Feedback transformer, 10-output end current transformer, 11-single phase poaer supply outfan, 12-SVPWM Waveform generator, 13-first SVPWM waveform outfan, 14-the 2nd SVPWM waveform outfan, 15-central processing unit.

Detailed description of the invention

With reference to Fig. 1-3, motor-car ground power supply of the present utility model, including central processing unit 15, current rectifying and wave filtering circuit 3, SVPWM Waveform generator the 12, first full bridge inverter 4 and the second full bridge inverter 5, current rectifying and wave filtering circuit the 3, first full-bridge Inverter circuit 4 and the second full bridge inverter 5 are connected in parallel successively, and current rectifying and wave filtering circuit 3 is connected to three phase worker power input End 1, described SVPWM Waveform generator 12 has SVPWM waveform outfan 13 and a 2nd SVPWM waveform outfan 14, The IGCT of left brachium pontis of the first full bridge inverter 4, the second full bridge inverter 5 the IGCT of left brachium pontis respectively with first SVPWM waveform outfan 13 connects, the IGCT of right brachium pontis of the first full bridge inverter 4, the right side of the second full bridge inverter 5 The IGCT of brachium pontis is connected with the 2nd SVPWM waveform outfan 14 respectively, and the outfan of the first full bridge inverter 4 connects the One isolating transformer 6, the outfan of the second full bridge inverter 5 connects the second isolating transformer 7, the first isolating transformer 6 Outfan and the outfan of the second isolating transformer 7 be connected in parallel after be connected with single phase poaer supply outfan 11；

It is respectively connected with use on each circuitry phase between described current rectifying and wave filtering circuit 3 and three phase worker power input 1 Input current transformer 2 in input current acquisition；

The outfan of the first described isolating transformer 6 and the outfan of the second isolating transformer 7 are connected in parallel rear and single The output end current transformer 10 gathered for output end current it is provided with on circuit between phase power output end 11；

Described single phase poaer supply outfan 11 is also parallel with the voltage feedback transformer 9 for gathering output end voltage；

Described central processing unit 15 connects SVPWM Waveform generator 12, input current transformer 2, outfan respectively Current transformer 10 and voltage feedback transformer 9.

Three phase worker power input 1 accesses the three phase worker power of 380V, then by current rectifying and wave filtering circuit 3 rectification and After filtering, form unidirectional current, the most again through the first full bridge inverter 4 and the second full bridge inverter 5 being arranged in parallel, the The left brachium pontis of one full bridge inverter 4 includes IGCT Q1 and IGCT Q2, and right brachium pontis includes IGCT Q3 and IGCT Q4, brilliant Brake tube Q1 and IGCT Q2 is the SVPWM waveform outfan 13 connecting SVPWM Waveform generator 12, IGCT Q3 and brilliant lock Pipe Q4 is the 2nd SVPWM waveform outfan 14 connecting SVPWM Waveform generator 12, by SVPWM Waveform generator 12 respectively Control left brachium pontis and right brachium pontis inversion generates stable alternating current；In like manner, the left brachium pontis of the second full bridge inverter 5 includes brilliant lock Pipe Q5 and IGCT Q6, right brachium pontis includes that IGCT Q7 and IGCT Q8, IGCT Q5 and IGCT Q6 are to connect SVPWM waveform Oneth SVPWM waveform outfan 13 of maker 12, IGCT Q7 and IGCT Q8 is connect SVPWM Waveform generator 12 the Two SVPWM waveform outfans 14, by SVPWM Waveform generator 12 control respectively the second full bridge inverter 5 left brachium pontis and Right brachium pontis inversion generates stable alternating current.The most respectively outfan is provided with the first isolating transformer 6 and the second isolation change Depressor 7 is exported by isolation transformation, and Parallel opertation again after letter forms stable single-phase alternating current, for maintenance and the debugging of motor-car Use.

So that filter needle pattern at the outfan of the first isolating transformer 6 and the outfan of the second isolating transformer 7 Pulse signal, is therefore parallel with filter respectively at the outfan of the first isolating transformer 6 and the outfan of the second isolating transformer 7 Ripple capacitor 8.

By the current signal of input current transformer 2 and output end current transformer 10 Gather and input end respectively and defeated Go out the current signal of end, by output end voltage feedback transformer 9 fed-back output voltage signal, by central processing unit 15 respectively Monitor current signal and voltage signal, it is ensured that the normal work of whole power supply, when abnormal signal occurring when maintenance or debugging, then Main switch, protection power supply and the motor-car of debugging can be disconnected by central processing unit 15.

Claims

1. a motor-car ground power supply, it is characterised in that include central processing unit (15), current rectifying and wave filtering circuit (3), SVPWM ripple Shape maker (12), the first full bridge inverter (4) and the second full bridge inverter (5) are current rectifying and wave filtering circuit (3), first complete Bridge inverter circuit (4) and the second full bridge inverter (5) are connected in parallel successively, and current rectifying and wave filtering circuit (3) is connected to three-phase main-frequency Power input (1), described SVPWM Waveform generator (12) has SVPWM waveform outfan (13) and the 2nd SVPWM Waveform outfan (14), the IGCT of left brachium pontis of the first full bridge inverter (4), the left bridge of the second full bridge inverter (5) The IGCT of arm is connected with SVPWM waveform outfan (13) respectively, the brilliant lock of the right brachium pontis of the first full bridge inverter (4) Pipe, the IGCT of right brachium pontis of the second full bridge inverter (5) are connected with the 2nd SVPWM waveform outfan (14) respectively, and first The outfan of full bridge inverter (4) connects the first isolating transformer (6), and the outfan of the second full bridge inverter (5) is even Being connected to the second isolating transformer (7), the outfan of the first isolating transformer (6) and the outfan of the second isolating transformer (7) are also Connection is connected with single phase poaer supply outfan (11) after connecting；

It is respectively connected with use on each circuitry phase between described current rectifying and wave filtering circuit (3) and three phase worker power input (1) Input current transformer (2) in input current acquisition；

The outfan of described the first isolating transformer (6) and the outfan of the second isolating transformer (7) are connected in parallel rear and single The output end current transformer (10) gathered for output end current it is provided with on circuit between phase power output end (11)；

Described single phase poaer supply outfan (11) is also parallel with the voltage feedback transformer (9) for gathering output end voltage；

Described central processing unit (15) connects SVPWM Waveform generator (12), input current transformer (2), output respectively End current transformer (10) and voltage feedback transformer (9).

Motor-car ground power supply the most according to claim 1, it is characterised in that described the first isolating transformer (6) defeated The outfan going out end and the second isolating transformer (7) is parallel with filter capacitor (8) respectively.