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:
May. 07, 2002
Filed:
Nov. 22, 2000
Shoichi Maeda, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A motor/generator ( ) is provided with plural groups of coils ( ), and inverters ( ) supplying a polyphase AC current converted from a DC current to each group of coils ( ) in response to pulse width modulation signals output by a microprocessor ( ). The microprocessor ( ) is programmed to prevent increases in high frequency components in the polyphase AC current by controlling a specific inverter ( ) to stop supplying the polyphase AC current (S ), when a load on the motor/generator is smaller than a reference load (S ). As a result, energy conversion efficiency of the motor/generator at low loads is improved.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile