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:
Apr. 18, 2017
Filed:
Mar. 03, 2015
Applicant:
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Inventors:
Thomas Nondahl, Greenfield, WI (US);
Jingbo Liu, Grafton, WI (US);
Zhongyuan Cheng, Kitchener, CA;
Navid Zargari, Cambrigde, CA;
Assignee:
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/49 (2007.01); H02M 7/5387 (2007.01); H02M 1/12 (2006.01); H02M 7/5395 (2006.01); H02M 7/483 (2007.01);
U.S. Cl.
CPC ...
H02M 7/53871 (2013.01); H02M 1/12 (2013.01); H02M 7/49 (2013.01); H02M 7/5395 (2013.01); H02M 2007/4835 (2013.01);
Abstract
Cascade H-Bridge inverters and carrier-based level shift pulse width modulation techniques are presented for generating inverter stage switching control signals, in which carrier waveform levels are selectively shifted to control THD and to mitigate power distribution imbalances within multilevel inverter elements using either complementary carrier or complementary reference modulation techniques.