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:
Mar. 08, 2005
Filed:
Apr. 26, 2002
Masayuki Komiyama, Kobe, JP;
Toshio Sora, Kobe, JP;
Masato Koyama, Sanda, JP;
Michio Kataoka, Kobe, JP;
Masayuki Komiyama, Kobe, JP;
Toshio Sora, Kobe, JP;
Masato Koyama, Sanda, JP;
Michio Kataoka, Kobe, JP;
Kobelco Construction Machinery Co., Ltd., Hiroshima, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An object of the invention is to maintain high vehicle driving performance and system efficiency by preventing reductions in the traction characteristic and the maximum driving speed of a vehicle. The invention relates to an electrical system for an electric automotive vehicle for driving the vehicle by supplying an electric power of a direct-current power supply to an electric motor for driving wheels via a semiconductor power converter for driving the wheels such as an inverter and speed-variably driving this electric motor or an electrical system for an electric automotive vehicle using an engine and a direct-current power supply as driving sources. A booster chopperis connected between a battery deviceoras the direct-current power supply and an inverteror a semiconductor power converter, and is controlled so that a direct-current input voltage of the inverteror the like becomes substantially constant.