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1. (WO2008108020) INVERTER SYSTEM FOR VEHICLE-MOUNTED AIR CONDITIONER

Pub. No.:    WO/2008/108020    International Application No.:    PCT/JP2007/069096
Publication Date: Sat Sep 13 01:59:59 CEST 2008 International Filing Date: Sat Sep 29 01:59:59 CEST 2007
IPC: H02P 27/06
B60H 1/32
F25B 1/00
H02M 7/48
Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD.
三菱重工業株式会社
ADACHI, Takehiro
安達 丈泰
NAKANO, Koji
中野 浩児
NAKAGAMI, Takashi
中神 孝志
HATTORI, Makoto
服部 誠
NIWA, Kazuki
丹羽 和喜
TAKASHIGE, Takayuki
鷹繁 貴之
Inventors: ADACHI, Takehiro
安達 丈泰
NAKANO, Koji
中野 浩児
NAKAGAMI, Takashi
中神 孝志
HATTORI, Makoto
服部 誠
NIWA, Kazuki
丹羽 和喜
TAKASHIGE, Takayuki
鷹繁 貴之
Title: INVERTER SYSTEM FOR VEHICLE-MOUNTED AIR CONDITIONER
Abstract:
An inverter system for a vehicle-mounted air conditioner, prevented from breakage caused by high-voltage application. The inverter system (20) controls operation of a motor (30) of a compressor for a vehicle-mounted air conditioner. In the inverter system (20), a motor control microcomputer (24) is operated by a low voltage obtained by converting a voltage supplied from a vehicle-mounted battery power source (50). Failure diagnosis of a high-voltage circuit (Cb) is performed by operating the motor control microcomputer (24) without a high-voltage power source (40) turned on. Because the failure analysis can be made without power supply from the high-voltage power source (40), damage to the high-voltage circuit (Cb) by high-voltage application is prevented even if the the high-voltage circuit (Cb) has a failure of some kind.