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:
Jan. 03, 2012
Filed:
Jan. 18, 2011
Bing LI, Singapore, SG;
Shu Yu Cao, Singapore, SG;
Gert Karmisholt Andersen, Hovedgard, DK;
Anshuman Tripathi, Singapore, SG;
Eng Kian Kenneth Sng, Singapore, SG;
Amit Kumar Gupta, Singapore, SG;
Bing Li, Singapore, SG;
Shu Yu Cao, Singapore, SG;
Gert Karmisholt Andersen, Hovedgard, DK;
Anshuman Tripathi, Singapore, SG;
Eng Kian Kenneth Sng, Singapore, SG;
Amit Kumar Gupta, Singapore, SG;
Vestas Wind Systems A/S, Randers SV, DK;
Abstract
A method for determining a rotor position of an electrical generator in a wind turbine is described comprising determining a voltage of the electrical generator, determining a rotor position angle estimate based on the voltage of the electrical generator, determining a subsequent rotor position angle estimate through a feedback loop, based on a combination of the voltage of the electrical generator and the rotor position angle estimate. Further, a method to real time track encoder health is described comprising determining the phase angle of a reference voltage, determining the angle difference between the rotor position and the reference voltage, and determining the differentiation of the angle difference.