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. 23, 2012
Filed:
Jul. 28, 2008
Siegfried Heier, Baunatal, DE;
Siegfried Heier, Baunatal, DE;
Universitaet Kassel, Kassel, DE;
Abstract
The invention relates to a double-fed asynchronous generator, which is provided with a slipring rotor (), and to a method for its operation. In the normal manner, the asynchronous generator has a machine-side converter () and a network-side converter (). According to the invention, the asynchronous generator is designed to supply short-circuit power in that at least one machine-side rotor current (iRM) is maintained in the event of a short circuit, in order to allow the formation of a stator-side short-circuit current. In order that inherent short-circuit currents in sensitive components of the converters () are nevertheless avoided, at least the machine-side rotor current (iRM) is maintained in such a way that the actual rotor current (iRMact) in the event of a short circuit is used as the new nominal value in a control apparatus for the asynchronous generator.