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:
Apr. 19, 2011
Filed:
Oct. 31, 2008
Subrata Saha, Anjo, JP;
Isao Fujiwara, Nagoya, JP;
Keisuke Nishimura, Anjo, JP;
Kazuma Hasegawa, Kariya, JP;
Yoshinori Oono, Nukata, JP;
Seiichi Kinugasa, Kariya, JP;
Subrata Saha, Anjo, JP;
Isao Fujiwara, Nagoya, JP;
Keisuke Nishimura, Anjo, JP;
Kazuma Hasegawa, Kariya, JP;
Yoshinori Oono, Nukata, JP;
Seiichi Kinugasa, Kariya, JP;
Aisin AW Co., Ltd., Anjo, JP;
Abstract
An electric motor control device includes a direct current power source; an inverter interposed between an electric motor and the direct current power source, the inverter device controlling an exchange of electric power therebetween; an inverter control unit that generates PWM pulses having a duty ratio corresponding to voltage command signals and sends the PWM pulses to the inverter in order to switch the inverter; a frequency changing unit that changes a carrier frequency of the PWM pulses generated by the inverter control unit in a manner corresponding to a frequency control signal; and a motor control unit.