POWER CONVERTER - HITACHI AUTOMOTIVE SYSTEMS LTD

Title:

POWER CONVERTER

Document Type and Number:

WIPO Patent Application WO/2012/077187

Kind Code:

A1

Abstract:

This power converter is provided with: an inverter that converts DC power into AC power and is equipped with a plurality of semiconductor switching elements configuring an upper and a lower arm; a gate driver for outputting to the inverter a gate signal for driving the gates of the plurality of semiconductor switching elements; a drive control unit for supplying the gate driver with a switching control signal for the gate driver to output a gate signal; a first abnormality detector for detecting a DC power overvoltage, an AC power overvoltage, and the temperature of the upper and the lower arm; and a second abnormality detector for detecting an abnormality in the plurality of semiconductor switching elements in the upper and the lower arm. Therein, the drive control unit is provided with a first protective circuit unit for implementing a protective operation when an abnormality is detected by the first abnormality detector, and a second protective circuit unit for implementing a protective operation when an abnormality is detected by the second abnormality detector.

Inventors:

IGARASHI HIROAKI (JP)
SHIGETA SATORU (JP)
OGURA TAKASHI (JP)

Application Number:

PCT/JP2010/071926

Publication Date:

June 14, 2012

Filing Date:

December 07, 2010

Export Citation:

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Assignee:

HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
IGARASHI HIROAKI (JP)
SHIGETA SATORU (JP)
OGURA TAKASHI (JP)

International Classes:

H02M7/48; H02M1/00; B60L9/18

Foreign References:

JP2010035347A	2010-02-12
JP2010245910A	2010-10-28
JP2004312817A	2004-11-04
JP2010206909A	2010-09-16
JP2003088093A	2003-03-20
JP2010104187A	2010-05-06
JPH0947055A	1997-02-14

Other References: