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:
Oct. 29, 2013
Filed:
Apr. 13, 2011
Haihui LU, Shanghai, CN;
Zhenhuan Yuan, Shanghai, CN;
Lixiang Wei, Whitefish Bay, WI (US);
Russel Kerkman, Milwaukee, WI (US);
Richard Lukaszewski, New Berlin, WI (US);
Ahmed Mohamed Sayed Ahmed, Mequon, WI (US);
Haihui Lu, Shanghai, CN;
Zhenhuan Yuan, Shanghai, CN;
Lixiang Wei, Whitefish Bay, WI (US);
Russel Kerkman, Milwaukee, WI (US);
Richard Lukaszewski, New Berlin, WI (US);
Ahmed Mohamed Sayed Ahmed, Mequon, WI (US);
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
A double fed induction generator (DFIG) system and controller are presented in which the rotor side converter is preloaded with one or more initial values for resuming regulated operation to counteract transients upon deactivation of the crowbar protection circuit to provide grid fault ride through.