【発明の名称】電気モ-タ駆動機器の電源リレ-故障検知装置

Japanese Patent JP3097723

B2

PURPOSE:To surely prevent the maldetection due to the fusion of power supply relays with a simple and inexpensive means by controlling a switching means before the voltage of a secondary power supply line is detected, and by discharging the electric charge of a capacitor via the winding of an electric motor. CONSTITUTION:Respective switching means are interposed between the respective terminals U, V, W (1, 2) of an electric motor M1 and the respective secondary power supply lines PIG (A, B). Between the primary power supply line and the respective secondary power supply lines PIG, respective relay contact means 11, 12 are interposed. Further, power is supplied to the primary power supply line through a power supply means BT. In this case, after the contact releasing control of the respective relay contact means 11, 12 has been carried out, a motor control means 3 controls the respective switching means and connects the winding of the electric motor M1 to the respective secondary power supply lines PIG for carrying out discharge. Then, the voltages of the respective secondary power supply lines PIG are detected, and in accordance with the magnitudes thereof, the abnormality of the respective contact means 11, 12 is detected.

Nakajima Hiroshi
Miyata Toshiyasu
Hideki Katsuraya
Fujita Kozo
Yasuo Uehara
Katsuka Fukaya

JP17871593A

October 10, 2000

July 20, 1993

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Aisin Seiki Co., Ltd.
TOYOTA JIDOSHA KABUSHIKI KAISHA

B62D5/04; B62D6/00; H01H47/00; H02H7/00; H02P27/06; B62D101/00; B62D113/00; B62D137/00; (IPC1-7): H01H47/00; B62D5/04; B62D6/00; H02H7/00; H02P7/63

JP6205588A
JP2283568A
JP4165994A
JP4295299A
JP33697A
JP5872395A
JP6023561B2

Nobu Sugi

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