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. 03, 2021
Filed:
Jun. 28, 2018
Ford Global Technologies, Llc, Dearborn, MI (US);
Jonathan Hair, Royal Oak, MI (US);
David Crist Gabriel, Troy, MI (US);
Elizabeth Rose Bifano, Garden City, MI (US);
Travis Smith, Westland, MI (US);
Arun Ganesan, Farmington Hills, MI (US);
Brian Khoi-Duy Nguyen, Livonia, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
An electric drive system for a vehicle includes a speed/position feedback device coupled to an electric machine and configured to provide an index pulse. The system further includes an inverter having a line voltage sensor. The system includes a controller programmed to, responsive to the electric machine rotating at a generally constant speed without commanding the inverter, generate a resolver offset from a time difference between a zero crossing of a line voltage and the index pulse and operate the inverter according to the resolver offset.