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. 13, 2021
Filed:
Dec. 22, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Ryo Miyashita, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
PWM control of first and second inverters that control a double-winding type rotating electric machine is performed with mode switching between asynchronous PWM and synchronous PWM. A first-group triangular wave used for the PWM control of the first inverter is switched from the asynchronous PWM to the synchronous PWM in first timing at which carrier phases of an asynchronous PWM triangular wave and a synchronous triangular wave are matched with each other. A second-group of triangular wave used for the PWM control of the second inverter is switched from the asynchronous PWM to the synchronous PWM in second timing at which the carrier phases of the asynchronous PWM triangular wave and the synchronous triangular wave are matched with each other.