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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.:

US 9793756 B1

PDFFull Text
Expired
Date of Patent:
Oct. 17, 2017

Filed:

Jul. 01, 2014

Back-up energy storage with in-rush current limiting for wind turbine pitch drive

Applicant:

Alstom Renovables España, S. L., Barcelona, ES;

Inventors:

Pedro Palomares Rentero, Barcelona, ES;

Alejandro Rujas, Mondragón, ES;

Héctor Ortiz De Landazuri, Barcelona, ES;

Assignee:

ALSTOM Renewable Technologies, Grenoble, FR;

Attorney:

Dority & Manning, P.A.

Primary Examiner:

Julio C Gonzalez R

Int. Cl.
CPC ...
F03D 9/00 (2016.01); H02J 11/00 (2006.01); H02J 9/06 (2006.01); F03D 7/02 (2006.01); F03D 80/00 (2016.01); F03D 9/25 (2016.01);
U.S. Cl.
CPC ...
H02J 11/00 (2013.01); F03D 7/0224 (2013.01); F03D 9/255 (2017.02); F03D 80/00 (2016.05); H02J 9/062 (2013.01); F05B 2260/42 (2013.01); Y02B 10/72 (2013.01); Y02E 10/72 (2013.01); Y02E 10/766 (2013.01);
Abstract

A wind turbine pitch drive system comprises an electric grid for supplying electrical power, a motor for driving a pitch actuator, an electronic converter for controlling the motor and a back-up energy storage unit for supplying electrical power. The electronic converter comprises a DC-link capacitor bank. The system furthermore comprises a switching device for selectively connecting the DC-capacitor bank link to the back-up energy storage unit, and a frequency generator for controlling the switching device. Also disclosed is a method for protecting a component of the electronic converter.

Find Patent Forward Citations

Palomares Rentero, Pedro. (2017). Back-up energy storage with in-rush current limiting for wind turbine pitch drive (U.S. Patent No. 9793756). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9793756

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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