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:
Dec. 13, 2016
Filed:
May. 28, 2013
Justin Creaby, Westminster, CO (US);
Justin Creaby, Westminster, CO (US);
SIEMENS AKTIENGESELLSCHAFT, München, DE;
Abstract
A method to individually optimize respective pitch angles of blades in a wind turbine. The method allows supplying () a modulation signal to modulate a pitch angle of the individual blade being optimized. The method further allows filtering () output power of the turbine subject to the modulating frequency to extract a power signal in a frequency spectrum including the modulating frequency. The extracted power signal and a demodulation signal are mixed () to generate a signal including a product of the extracted power signal and the demodulation signal. The generated signal is filtered () to remove the modulating frequency and extract a gradient signal effective to search a pitch angle estimate conducive to optimize output power of the turbine. The gradient signal may be integrated () to cause the gradient signal to converge towards an optimal pitch angle for the individual blade being optimized.