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:
Oct. 25, 2011
Filed:
Mar. 14, 2008
Kazutaka Tatematsu, Nagoya, JP;
Ryoji Mizutani, Nishikamo-gun, JP;
Eiji Yamada, Owariasahi, JP;
Nobuyuki Matsui, Nagoya, JP;
Takashi Kosaka, Nagoya, JP;
Kazutaka Tatematsu, Nagoya, JP;
Ryoji Mizutani, Nishikamo-gun, JP;
Eiji Yamada, Owariasahi, JP;
Nobuyuki Matsui, Nagoya, JP;
Takashi Kosaka, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-Ken, JP;
Abstract
An electric motor has a field pole formed by a field current passing through a field winding. A voltage booting converter converts output voltage of a battery and outputs the voltage between a power source line and a grounding line. Field winding is electrically connected onto an electric current channel between battery and power source line and formed so that voltage switched by a switching element is applied to both ends. A controller controls the field current so as to adjust density of magnetic flux between a rotor and a stator by performing switching control on switching element and a switching element connected in parallel to field winding and converts the output voltage of battery into voltage in accordance with a voltage command value.