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. 24, 2009
Filed:
Feb. 14, 2006
Bin Wu, Toronto, CA;
Steven C. Rizzo, Cambridge, CA;
Navid R. Zargari, Cambridge, CA;
Congwei Liu, Toronto, CA;
Weixing Feng, Hamilton, CA;
Bin Wu, Toronto, CA;
Steven C. Rizzo, Cambridge, CA;
Navid R. Zargari, Cambridge, CA;
Congwei Liu, Toronto, CA;
Weixing Feng, Hamilton, CA;
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
Three-level inverter and rectifier power conversion systems and space vector modulation (SVM) controls having even-order harmonic elimination for neutral voltage balancing with a predefined vector switching sequences for half-wave symmetry in open loop system operation. The vector sequence listings for each SVM diagram segment includes switching state entries individually indicating one of three possible switching state levels positive (P), zero (), or negative (N) for each of three or more switching groups of the power conversion system, with listings for each pair of first and second diametrically opposite diagram segments include symmetrically opposite switching states, with positive levels in the entries of the listing for the first segment corresponding to negative levels in the entries of the listing for the second segment and vice versa.