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Power unit and alternator containing it

A power unit and component technology, applied in the field of power units and ACs, can solve the problems of reducing the stability and life of single-phase power units, lack of heat dissipation considerations, and the life of DC support capacitors, etc., to improve reliability and service life, Calorific value reduction effect

Active Publication Date: 2019-11-29
ZHUZHOU CRRC TIMES SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the single-phase power unit in the prior art often lacks heat dissipation considerations, resulting in an excessively high temperature rise of the DC support capacitor and a sharp drop in life, which reduces the stability and life of the single-phase power unit

Method used

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  • Power unit and alternator containing it
  • Power unit and alternator containing it
  • Power unit and alternator containing it

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Experimental program
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Embodiment Construction

[0029] The present invention will be further described below in conjunction with accompanying drawing.

[0030] Figures 1 to 3 All and parts of a power unit 100 according to one embodiment of the invention are shown. Such as Figures 1 to 3 As shown, the power unit 100 includes a casing 1 , a heat sink 2 , an IGBT element 3 , a DC support capacitor 4 and a cold air source 5 . Among them, the housing 1 is configured as a box structure. The radiator 2 is arranged in the inner cavity of the housing 1 and is fixedly connected with the back plate 11 of the housing 1 to dissipate heat for the IGBT element 3 . IGBT element 3 is provided on at least one surface of heat sink 2 . The DC support capacitor 4 is arranged in the inner cavity of the housing 1 and on the backplane 11 . The DC support capacitor 4 is electrically connected to the IGBT element 3 .

[0031] Therefore, in the inner cavity of the housing 1 of the power unit 100, not only a radiator 2 is provided to dissipate...

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Abstract

The invention proposes a power unit and a current converter comprising the same. The power unit comprises a box-type housing; a heat radiator which is disposed in the inner cavity of the housing and is fixedly connected with a backboard of the housing; an IGBT element which is disposed on the surface of the heat radiator; a DC support capacitor which is disposed in the inner cavity of the housingand is fixedly connected with the backboard of the housing, and is electrically connected with the IGBT element; and a cold air source which is communicated with the inner cavity of the housing. The power unit is high in heat dissipation efficiency, and is stable in operation.

Description

technical field [0001] The invention relates to power electronics technology, in particular to a power unit and an alternator containing it. Background technique [0002] As the power level of the converter continues to increase, its weight and volume also increase accordingly. In order to reduce the ripple current of the supporting capacitor of the converter, a three-phase power unit is often used, but with the continuous increase of power, the volume and weight of the three-phase power unit used will also increase, which is not conducive to maintenance and repair. In addition, if one of the components of the three-phase power unit is damaged during operation, the entire module needs to be disassembled and replaced, resulting in difficult maintenance and high maintenance costs. [0003] Therefore, single-phase power units have been widely used in converters due to their light weight, convenient disassembly, and easy maintenance. However, the single-phase power unit in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L25/00H01L23/473H01L23/367H02M1/00
CPCH01L23/3672H01L23/473H01L25/00H02M1/00
Inventor 邵强陈燕平黄南蒋云富熊辉石廷昌忻兰苑李少波李保国高海祐谢稳
Owner ZHUZHOU CRRC TIMES SEMICON CO LTD