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:
Feb. 14, 2017
Filed:
Jan. 20, 2012
Applicants:
Masoud Parkhou, Hammel, DK;
Xue Wen Luo, Singapore, SG;
Michael Casem Tumabcao, Singapore, SG;
Inventors:
Assignee:
VESTAS WIND SYSTEMS A/S, Aarhus N, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/02 (2006.01); H02H 7/12 (2006.01); H02H 3/16 (2006.01); F03D 9/00 (2016.01); G01R 31/42 (2006.01); H02H 7/06 (2006.01);
U.S. Cl.
CPC ...
G01R 31/025 (2013.01); F03D 9/003 (2013.01); F03D 17/00 (2016.05); G01R 31/42 (2013.01); H02H 3/16 (2013.01); H02H 7/1216 (2013.01); F05B 2220/7064 (2013.01); F05B 2260/80 (2013.01); F05B 2270/107 (2013.01); H02H 7/06 (2013.01); Y02E 10/722 (2013.01); Y02E 10/725 (2013.01);
Abstract
A wind turbine fault detection circuit is designed to determine presence of a fault. In a described embodiment, the wind turbine fault detection circuit utilizes a magnetometer in the form of a hall-effect sensor coupled between a power converter and a ground element to measure a ground current from the power converter to obtain a real ground current. The wind turbine fault detection circuit utilizes a comparator to determine presence of a fault based on the real ground current.