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:
Apr. 02, 2013
Filed:
Feb. 18, 2008
Masaharu Hosoda, Wako, JP;
Yuji Saito, Wako, JP;
Yasuyuki Danjo, Wako, JP;
Hideki Inoue, Wako, JP;
Tetsu Sugiyama, Wako, JP;
Junji Kato, Wako, JP;
Masaharu Hosoda, Wako, JP;
Yuji Saito, Wako, JP;
Yasuyuki Danjo, Wako, JP;
Hideki Inoue, Wako, JP;
Tetsu Sugiyama, Wako, JP;
Junji Kato, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
When a short-circuit failure of any of switch portions () including switch elements () and parallel-connected feedback diodes () of an inverter circuit () is detected during the operation of a motor (), a switch portion () where the short-circuit failure has occurred is checked for whether it is on the positive polarity side or the negative polarity side. The switch elements () are so controlled that all the switch portions () on the same polarity side as where the short-circuit has occurred are brought into a conducted state and all the others are disconnected. This prevents a large electric current from flowing into each switch portion of the inverter circuit without requiring any switch to block the power distribution between a motor and the inverter circuit when a short-circuit failure of the switch portion of the inverter circuit occurs.