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. 24, 2009
Filed:
Jan. 24, 2007
Satoru Kaneko, Naka, JP;
Shiho Izumi, Hitachi, JP;
Tatsuyuki Yamamoto, Mito, JP;
Kenta Katsuhama, Hitachinaka, JP;
Shigeru Akaishi, Isesaki, JP;
Yasuo Matsunaga, Sagamihara, JP;
Hidehiko Sugita, Zama, JP;
Satoru Kaneko, Naka, JP;
Shiho Izumi, Hitachi, JP;
Tatsuyuki Yamamoto, Mito, JP;
Kenta Katsuhama, Hitachinaka, JP;
Shigeru Akaishi, Isesaki, JP;
Yasuo Matsunaga, Sagamihara, JP;
Hidehiko Sugita, Zama, JP;
Hitachi, Ltd., Tokyo, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
An object of the present invention is to provide a controller for an electric four-wheel-drive vehicle, which is capable of minimizing torque changes and consuming excessive power even when the excessive power is generated by a generator. A motor control unit causes an AC motor to generate desired torque by controlling an inverter. When the power generated by the generator exceeds the power consumed by the inverter and AC motor to generate excessive power, a current command determination unit in the motor control unit consumes the excessive power by increasing a loss in the AC motor.