The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2016
Filed:
Nov. 13, 2012
Sanden Corporation, Isesaki-shi, JP;
Daisuke Hirono, Isesaki, JP;
SANDEN CORPORATION, Gunma, JP;
Abstract
To provide a fault detection device for an inverter system, that detects a fault in the inverter system including an inverter circuitthat converts DC power into AC power and a motordriven thereby. When a driving start signal Sigof the inverter circuitis input, a test voltage applying unitapplies a predetermined first test voltage to a current measuring unitthat measures current flowing in the inverter circuit, and it is determined whether the current measuring unithas failed, based on the first test voltage. A control unitapplies a predetermined second test voltage to the inverter circuitand the motor, and it is determined whether the inverter circuitand a motor coil have failed, based on the second test voltage.