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. 30, 2013
Filed:
May. 29, 2009
Masaki Tagome, Osaka, JP;
Noriyoshi Nishiyama, Osaka, JP;
Yasuhiro Kondo, Osaka, JP;
Makoto Kitabatake, Nara, JP;
Shun Kazama, Osaka, JP;
Masaki Tagome, Osaka, JP;
Noriyoshi Nishiyama, Osaka, JP;
Yasuhiro Kondo, Osaka, JP;
Makoto Kitabatake, Nara, JP;
Shun Kazama, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The present invention provides a synchronous motor drive system designed to realize reduced vibration and noise along with high output. The system includes: inverters, andfor converting a direct current to a three-phase alternating current; a current application control unitthat controls operations of the three-phase inverters; and a synchronous motordriven by three-phase alternating currents supplied from the three-phase inverters. The current application control unitdetermines, for each three-phase inverter, a current phase angle and a current amount of a three-phase alternating current to output, and each inverter supplies a three-phase alternating current having the determined current phase angle and current amount to a different one of three-phase coil groupsto