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. 08, 2008
Filed:
Jan. 24, 2005
Soichi Yoshinaga, Nagoya, JP;
Soichi Yoshinaga, Nagoya, JP;
Denso Corporation, Kariya, JP;
Abstract
A rotary electric apparatus comprises a rotor including a first and second rotor members, a stator including a first stator and second stator members with armature coils to which armature current is supplied for synchronous rotation. The first and second rotor members are formed into a skewed type. Control means for controlling amounts Φand Φof field magnetic flux generated by the first and second rotor members, respectively, such that the amounts Φand Φdiffer from each other to reduce a difference between a maximum amplitude of a predetermined-order harmonic component Fof an electromagnetic force caused by a pair of the first rotor member and the first stator member and a maximum amplitude of the predetermined-order harmonic component Fof an electromagnetic force caused by a further pair of the second rotor member and the second stator member is reduced.