High speed train bogie power supply mode traction converter main circuit

A technology of traction converter and bogie, which is applied in electric traction, electric vehicles, AC power input to AC power output, etc. It can solve the problems of poor overall control performance, achieve accurate and stable voltage, and filter out the second harmonic wave, to ensure safe and reliable driving effect

Inactive Publication Date: 2016-06-29
CHINA RAILWAYS CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traction converter of this kind of main circuit mostly adopts th

Method used

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  • High speed train bogie power supply mode traction converter main circuit
  • High speed train bogie power supply mode traction converter main circuit

Examples

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Embodiment Construction

[0017] figure 1 It is a schematic diagram of the circuit composition of the first embodiment of the traction converter main circuit of the high-speed EMU bogie power supply mode of the present invention, as shown in figure 1 As shown, the main circuit includes:

[0018] A pre-charging circuit 1, a rectifying circuit 2, a bus voltage processing circuit 3 and an inverter circuit 4 connected in sequence;

[0019] The pre-charging circuit 1 is used to control the variation range of the input current when the traction converter is initially powered on, and the pre-charging circuit includes a first pre-charging circuit 11 and a second pre-charging circuit 12;

[0020] The rectifier circuit 2 includes a first four-quadrant rectifier 21 and a second four-quadrant rectifier 22 connected in parallel;

[0021] The first input terminal A3 of the first four-quadrant rectifier 21 is connected to the output terminal B1 of the first pre-charging circuit 11, and the second input terminal B3 ...

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Abstract

The invention provides a high speed train bogie power supply mode traction converter main circuit which comprises a pre-charge circuit, a rectifier circuit, a busbar voltage processing circuit and an inverter circuit which are connected in sequence, wherein the pre-charge circuit is used for preventing input current from being too large when a traction converter is primarily powered; the rectifier circuit comprises two four-quadrant rectifiers which are connected in parallel, and can be controlled to filter a part of higher harmonic of primary side current of a transformer; the busbar voltage processing circuit comprises a secondary filter circuit and a support capacitor and is used for filtering secondary harmonic and ripple waves of busbar voltage; the inverter circuit comprises two three-phase inverters in parallel; one three-phase inverter is used for driving two traction motors working on a bogie to operate. By control of the rising rate of current when the converter is powered and filtration of the higher harmonic of the input current and the secondary harmonic and ripple waves of the busbar voltage, the voltage input into the inverters can be accurate and reliable, and safe and reliable driving of the traction motor can be ensured.

Description

technical field [0001] The invention relates to the technical field of high-speed EMUs, in particular to a main circuit of a traction converter of a high-speed EMU bogie power supply mode. Background technique [0002] The technology of high-speed EMUs has developed rapidly in recent years, and the traction converter is an important part of high-speed EMUs. The traction converter outputs three-phase alternating current to drive the traction motor in the high-speed EMU, thereby driving the operation of the EMU. [0003] The traction converter is generally composed of a rectifier, a bus voltage processing circuit and an inverter. Among them, the rectifier rectifies the input voltage, and the bus voltage processing circuit maintains the stability of the bus voltage, so as to ensure that the inverter can control the reliable operation of the traction motor according to the stable bus voltage. Therefore, it is very important for the reliable operation of the traction motor and ...

Claims

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Application Information

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IPC IPC(8): B60L9/00H02P5/74H02M5/458
CPCH02M5/45Y02T10/72
Inventor 高永军管俊青张桂成卫钢张瑞峰顾秀江伍益民
Owner CHINA RAILWAYS CORPORATION
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