Traction converter device based on high-compatibility power unit

A power unit, traction conversion technology, applied in the direction of output power conversion device, AC power input conversion to AC power output, electrical components, etc., can solve the problems of incompatibility, large economic cost of spare parts, long development cycle, etc. Achieve the effect of reducing the number of research and development, shortening the design cycle, and reducing types

Active Publication Date: 2017-10-24
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problems of existing power module units such as single function, incompatibility with each other, long development period, and large economic cost of spare parts, and provides a traction converter device based on highly compatible power units

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  • Traction converter device based on high-compatibility power unit

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Embodiment Construction

[0008] The traction converter device based on the highly compatible power unit includes two power units connected in parallel at both ends of the four-way half-bridge circuit, the peripheral circuit at the input end, the peripheral circuit at the middle part, the chopper resistor, and the peripheral circuit at the output end; the left side The power unit is composed of a first half-bridge circuit, a second half-bridge circuit, a third half-bridge circuit, and a fourth half-bridge circuit connected in parallel at both ends; the middle points of the first half-bridge circuit and the second half-bridge circuit are connected in parallel connected to one end of the first resistor, the other end of the first resistor is connected to the first switch and then connected to the first input end, and a second switch is connected in parallel between one end of the first resistor and the first input end; The middle points of the third half-bridge circuit and the fourth half-bridge circuit a...

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Abstract

The invention relates to a traction converter device, in particular to a traction converter device based on a high-compatibility power unit, and solves the problems of single function, incompatibility, long development period and large economic cost of spare parts of the existing power module unit. The scheme is as follows: the device comprises two power units respectively formed by connecting four paths of half-bridge circuits in parallel, an input end peripheral circuit, a middle peripheral circuit, a chopping resistor and an output end peripheral circuit, wherein the power unit at the left side is assembled at the input end and forms a four-quadrant rectifier unit through parallel application of two paths of half-bridges; the power unit at the right side is assembled at the output end and three paths of half-bridges form an inverter unit and the remaining path of half-bridge and the chopping resistor form a chopping unit. The device has the advantages that through the standardized power unit module, the research and development number of the power units can be reduced and the design cycle is greatly reduced; the types of components in the converter device are reduced; and the simplification of the power units and electric interfaces is realized.

Description

technical field [0001] The invention relates to a traction converter, in particular to a traction converter based on a highly compatible power unit. Background technique [0002] IGBT (Insulated Gate Bipolar Transistor) is a composite fully-controlled voltage-driven power semiconductor device composed of BJT (Bipolar Transistor) and MOS (Insulated Gate Field Effect Transistor), which has both high input impedance and GTR of MOSFET The advantages of low conduction voltage drop are two aspects. The saturation voltage of GTR is low, the carrying current density is large, but the driving current is large; the driving power of MOSFET is small, the switching speed is fast, but the conduction voltage drop is large, and the current carrying density is small. IGBT combines the advantages of the above two devices, the driving power is small and the saturation voltage is low, and it is very suitable for the conversion system with a DC voltage of 600V and above, such as AC motors, freq...

Claims

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Application Information

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IPC IPC(8): H02M5/458
CPCH02M5/4585
Inventor 王彬王雷裴冰杨璐李守蓉
Owner CRRC YONGJI ELECTRIC CO LTD
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