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:
Apr. 01, 2025
Filed:
Dec. 27, 2022
Subaru Corporation, Tokyo, JP;
Satoshi Yoshizawa, Tokyo, JP;
Tomoyuki Okada, Tokyo, JP;
Subaru Corporation, Tokyo, JP;
Abstract
A motor drive system includes a battery, double-stator axial gap motors, inverter circuits configured to control power running drive and regenerative drive of the double-stator axial gap motors, step-up/step-down circuits configured to adjust at least voltage of regeneratively generated power of the double-stator axial gap motors, and one or more control devices configured to control drive of the inverter circuits and the step-up/step-down circuits. Each of the double-stator axial gap motors includes two stators. Each of the inverter circuits are connected to a respective one of the two stators. The inverter circuits are connected in series. A single step-up/step-down circuit among the step-up/step-down circuit is provided for each of the axial gap motors. The single step-up/step-down circuit provided for each of the axial gap motors is connected to one of two inverter circuits connected to the two stators among the inverter circuits.