Search International and National Patent Collections

1. (WO2018079299) POWER CONVERSION DEVICE

Pub. No.:    WO/2018/079299    International Application No.:    PCT/JP2017/037124
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Sat Oct 14 01:59:59 CEST 2017
IPC: H02M 7/48
H02M 3/28
H02M 7/5387
Applicants: HITACHI AUTOMOTIVE SYSTEMS, LTD.
日立オートモティブシステムズ株式会社
Inventors: YAMAI Hiroyuki
山井 広之
Title: POWER CONVERSION DEVICE
Abstract:
The present invention addresses the problem of providing a power conversion device with which a diagnosis of a voltage detector can be performed at a low cost. This power conversion device is equipped with: a control circuit that drives an inverter; a power supply circuit 11b that has a transistor S0 and that converts input voltage of an inverter and outputs a voltage that is applied to the control circuit; and a microcontroller 9a that, on the basis of the switching frequency and the on-time for a switching signal that is input to the transistor S0 of the power supply circuit 11b, performs a diagnosis on a DC input voltage detector 4 that detects the input voltage.