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:
Oct. 17, 2017
Filed:
Dec. 14, 2016
Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;
Abstract
Provided is a power conversion device, including a fault determination unit () for determining, based on phase voltages of a polyphase dynamo-electric machine () detected by phase voltage detection units (), a power, earth, or open fault of armature windings of the polyphase dynamo-electric machine (). The fault determination unit () determines, in a state that all power semiconductor switching elements () are in an off state and no induction voltage is generated in the armature windings of the polyphase dynamo-electric machine (), the power fault when all the phase voltages are substantially equal to an anode potential of a DC power supply (), the earth fault when all the phase voltages are substantially equal to a cathode potential of the DC power supply (), and the open fault when all the phase voltages are not substantially the same potential.