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:
Aug. 11, 2009
Filed:
May. 25, 2007
Ralph Teichmann, Albany, NY (US);
Changyong Wang, Shanghai, CN;
Robert William Delmerico, Clifton Park, NY (US);
Zhuohui Tan, Shanghai, CN;
Robert Roesner, Munich, DE;
Renchang Dai, Beijing, CN;
Ralph Teichmann, Albany, NY (US);
Changyong Wang, Shanghai, CN;
Robert William Delmerico, Clifton Park, NY (US);
Zhuohui Tan, Shanghai, CN;
Robert Roesner, Munich, DE;
Renchang Dai, Beijing, CN;
General Electric Company, Niskayuna, NY (US);
Abstract
A protective circuit for a multi-level converter including a DC link capacitor bank includes: an energy absorbing element; switches, wherein at least two of the switches each couple the energy absorbing element to the capacitor bank; and a controller configured to provide control signals to the switches to selectively actuate the switches to enable control of energy dissipation and to enable control of voltage balance on the capacitor bank of the multi-level converter.