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:
Sep. 22, 2020
Filed:
Jul. 31, 2015
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Wisconsin Alumni Research Foundation, Madison, WI (US);
Kensuke Sasaki, Kanagawa, JP;
Takashi Fukushige, Kanagawa, JP;
Takashi Katou, Kanagawa, JP;
Brent S. Gagas, Madison, WI (US);
Robert D. Lorenz, Madison, WI (US);
Nissan Motor Co., Ltd., Yokohama, JP;
Wisconsin Alumni Research Foundation, Madison, WI (US);
Abstract
A magnetization state control method for a variable magnetization machine, the method includes generating a flux linkage vector while changing a magnetization state of the variable magnetization machine such that a trajectory of the flux linkage vector has a curved clockwise trajectory on a dq-axis plane and a magnitude of the flux linkage vector temporally changes, with the dq-axis plane being a synchronous reference frame with a d-axis pointing in a direction of a permanent magnet flux and a q-axis being 90 degrees ahead of the d-axis in a rotational direction of a rotor.