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:
Jul. 21, 2015
Filed:
Jul. 11, 2013
Aida Engineering, Ltd., Sagamihara-shi, Kanagawa, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Narashino-shi, Chiba, JP;
Yoshihiro Yamaguchi, Sagamihara, JP;
Hiroshi Nagase, Sagamihara, JP;
Fumio Tajima, Sagamihara, JP;
Masataka Yahara, Narashino, JP;
Yukinari Fujisawa, Narashino, JP;
Aida Engineering, Ltd., Kanagawa, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Abstract
A motor control device which can determine a magnetic pole position for a magnetic pole position detector included in a permanent magnet motor in which the reluctance torque proportion is larger than the magnet torque proportion is provided. In a permanent magnet synchronous motor having multi-phase windings of N axes (N≧2), the windings of optionally selected K axes (K≦N) are DC excited using corresponding independent power supplies.