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:
Sep. 26, 2006
Filed:
Oct. 25, 2004
Applicant:
Yasuhiko Kitajima, Kamakura, JP;
Inventor:
Yasuhiko Kitajima, Kamakura, JP;
Assignee:
Nissan Motor Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 33/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An inverter supply voltage generator comprises an inverter supply voltage computing unit, a voltage converterand a battery. The inverter supply voltage generator varies inverter supply voltage Vdc in synchronization with motor-application voltages Vu_pwm, Vv_pwm, and Vw_pwm. Thus, the degree of freedom of the switching operation of a PWM inverteris increased, an inverter loss and the size of the PWM invertercan be reduced, and its efficiency can be enhanced without deteriorating the driving efficiency of an IPM motor