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. 07, 2019
Filed:
Oct. 23, 2017
Purdue Research Foundation, West Lafayette, IN (US);
Deere & Company, Moline, IL (US);
Dionysios Aliprantis, West Lafayette, IN (US);
Guozhen Zhou, Fargo, ND (US);
Ayesha Sayed, West Lafayette, IN (US);
PURDUE RESEARCH FOUNDATION, West Lafayette, IN (US);
DEERE & COMPANY, Moline, IL (US);
Abstract
In an example embodiment, a method of controlling an electric machine includes obtaining an estimated position waveform, the estimated position waveform being based on a position of a rotor of the electric machine, the estimated position waveform having an error signal and an actual position waveform and determining a corrected position waveform based on the estimated position waveform. The determining the corrected position waveform of the rotor includes determining an estimated first coefficient and an estimated second coefficient and reducing at least one frequency component of the error signal using the estimated first coefficient and the estimated second coefficient to determine the corrected position waveform. The method further includes controlling the electric machine based on the corrected position waveform and reducing a ripple in a direct current (DC) link voltage based on the controlling.