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:
Mar. 18, 2025
Filed:
May. 25, 2022
Applicant:
Nidec Elesys Corporation, Kanagawa, JP;
Inventors:
Assignee:
NIDEC ELESYS CORPORATION, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 7/537 (2006.01); H02P 6/08 (2016.01); H02P 27/06 (2006.01); H02P 29/60 (2016.01); H02M 1/084 (2006.01);
U.S. Cl.
CPC ...
H02M 7/537 (2013.01); H02P 6/08 (2013.01); H02P 27/06 (2013.01); H02P 29/60 (2016.02); H02M 1/084 (2013.01);
Abstract
The disclosure provides an inverter device for driving an electric motor, including: an inverter circuit including a plurality of switching elements; and a control circuit controlling the inverter circuit. When a rotation speed of the electric motor is equal to or less than a preset rotation speed threshold and a torque of the electric motor is equal to or greater than a preset torque threshold, the control circuit changes a temperature estimation logic of the switching elements of the inverter circuit.