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:
Feb. 10, 2004
Filed:
Sep. 18, 2002
Applicant:
Inventors:
Tomonori Kimura, Kariya, JP;
Masahito Mizukoshi, Nagoya, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/24 ; H02M 7/5387 ; H02P 5/34 ;
U.S. Cl.
CPC ...
H02M 3/24 ; H02M 7/5387 ; H02P 5/34 ;
Abstract
A power inverter for a polyphase load such as an AC motor is provided which is designed to minimize an on-off switching loss of transistors installed in the inverter. The inverter works to disenable switching operations of the transistors for each phase in a first cycle during which a corresponding output current is high in level and partially disenable the switching operations in a second cycle following the first cycle during which the corresponding output current is middle in level.