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:
Jun. 15, 2021
Filed:
Dec. 20, 2019
Denso Corporation, Kariya, JP;
Jun Ishida, Kariya, JP;
Makoto Taniguchi, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A control apparatus is provided to control a rotating electric machine whose number of poles is switched from a pre-switching number of poles to a post-switching number of poles. The control apparatus includes a pre-switching control unit, a post-switching control unit and a transition control unit. The pre-switching control unit controls the torque generated by the machine before the switching of the number of poles. The post-switching control unit controls the torque generated by the machine after the switching. During a pole-number switching period, the transition control unit controls electric currents flowing in stator coils of the machine or voltages applied to the stator coils to make each magnetic pole formed with control by the pre-switching control unit not coincident with any magnetic pole formed with control by the post-switching control unit and having the same polarity as the magnetic pole formed with the control by the pre-switching control unit.