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:
Aug. 08, 2023
Filed:
Aug. 02, 2021
Schneider Toshiba Inverter Europe Sas, Pacy sur Eure, FR;
Alain Dutrey, Fontaine sous Jouy, FR;
Thomas Devos, Carrières sous Poissy, FR;
François Malrait, Jouy sur Eure, FR;
Schneider Toshiba Inverter Europe SAS, Pacy sur Eure, FR;
Abstract
Examples include a method of control implemented in a variable speed drive for controlling an electric motor during backspin, wherein the method includes: determining, by the variable speed drive, a mechanical power value occurring at a backspin speed and an estimated load torque; determining, by the variable speed drive, a specific electrical losses profile occurring at a motor flux level, wherein the specific electrical losses profile coincides with the mechanical power value; determining, by the variable speed drive, a flux reference and a speed reference to be applied to the motor to coincide with the specific electrical losses profile; and controlling, by the variable speed drive, the backspin speed of the motor to maintain the coincidence with the specific electrical losses profile.