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:
Nov. 08, 2022
Filed:
Oct. 06, 2020
Siemens Gamesa Renewable Energy A/s, Brande, DK;
Nuno Miguel Amaral Freire, Brande, DK;
Zhan-Yuan Wu, Sheffield, GB;
Abstract
Provided is a method of estimating a rotor operational parameter of an electrical machine including multiple winding sets wound to have a phase-shift between winding sets, the rotor operational parameter including rotor position and/or rotor speed, the method including: deriving, for each winding set, a preliminary rotor operational parameter based on a current and a voltage of the respective winding set; calculating for at least two winding sets and for at least one predefined harmonic, a rotor operational parameter harmonic correction term based on the preliminary rotor operational parameter of at least two winding sets; calculating for at least one winding set, a corrected rotor operational parameter based on the preliminary operational parameter of this winding set and the rotor operational parameter harmonic correction term of this winding set, wherein in particular the corrected rotor operational parameter has at least one predefined harmonic removed or at least attenuated.