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:
Sep. 02, 2025
Filed:
Feb. 15, 2023
Nidec Psa Emotors, Carrieres sous Poissy, FR;
Julien Lau You Hin, Nogent sur Marne, FR;
Michael Chemin, La Queue en Brie, FR;
Nidec PSA Emotors, Carrieres sous Poissy, FR;
Abstract
A method is disclosed for controlling an inverter controlled by a first control device in a nominal operating mode and by a second control device to apply a safety operating mode chosen from an Active Short Circuit (ASC) mode and a freewheeling (FW) mode. The method comprises determining the voltage on a high-voltage bus (UHVDC). If the voltage is lower than a first voltage threshold (Uthi), the FW mode is selected; if the voltage is greater than a second voltage threshold (Uth2) greater than Uthi, the ASC mode is selected; and if the voltage is between Uthi and Uth2, a parameter representative of the ability to inject power onto the UHVDC in a risk free manner is determined. If this parameter is greater than or equal to a threshold value, ASC mode is selected and if the parameter is lower than the threshold value, FW mode is selected.