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:
May. 30, 2023
Filed:
Oct. 02, 2020
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Song He, Troy, MI (US);
Brent S. Gagas, Ferndale, MI (US);
Brian A. Welchko, Oakland, MI (US);
Kerrie M. Spaven, Rochester Hills, MI (US);
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60L 50/51 (2019.01); B60W 10/08 (2006.01); H02P 9/44 (2006.01); H02P 25/024 (2016.01); H02P 27/04 (2016.01);
U.S. Cl.
CPC ...
B60L 50/51 (2019.02); B60W 10/08 (2013.01); B60L 2210/40 (2013.01); B60W 2520/10 (2013.01); B60W 2720/10 (2013.01); H02P 9/44 (2013.01); H02P 25/024 (2016.02); H02P 27/04 (2013.01);
Abstract
Control of an AC motor includes rotation over an operating speed range with the output from an inverter by operating the inverter at switching frequencies that vary in proportion to rotor speed. The operating speed range is parsed into a plurality of speed regions and the switching frequencies within each operating speed region may correspond to a respective pulse ratio that is different from the respective pulse ratio corresponding to an adjacent speed region.