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1. (WO2017199405) POWER CONVERSION DEVICE

Pub. No.:    WO/2017/199405    International Application No.:    PCT/JP2016/064922
Publication Date: Fri Nov 24 00:59:59 CET 2017 International Filing Date: Fri May 20 01:59:59 CEST 2016
IPC: H02M 1/00
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: NOJIRI, Yuji
野尻 祐二
HATAI, Akira
畑井 彰
NAGAFUCHI, Shotaro
永渕 翔太郎
Title: POWER CONVERSION DEVICE
Abstract:
A power module 10 of a power conversion device 100 is provided with: a switching circuit having a switching element; a capacitor pair 12 connected in parallel with the switching circuit and having first and second capacitors 12a, 12b connected in series; and a terminal connected between the first and second capacitors 12a, 12b. The power conversion device 100 is provided with: a first resistor 21 electrically connected between the positive electrode of the switching circuit and the terminal; a second resistor 22 electrically connected between the negative electrode of the switching circuit and the terminal; and a failure detection circuit 2 for detecting a short-circuit failure of at least one of the first and second capacitors 12a, 12b on the basis of the voltage occurring across at least one of the first resistor 21 and the second resistor 22.