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:
Nov. 10, 2015
Filed:
Aug. 27, 2013
Applicant:
Enphase Energy, Inc., Petaluma, CA (US);
Inventors:
Brian Acker, Sebastopol, CA (US);
Andrew Barnes, Santa Rosa, CA (US);
Assignee:
Enphase Energy, Inc., Petaluma, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/12 (2006.01); H02M 7/04 (2006.01); H02M 1/00 (2007.01); H02J 3/38 (2006.01);
U.S. Cl.
CPC ...
H02M 1/12 (2013.01); H02M 7/04 (2013.01); H02J 3/383 (2013.01); H02M 2001/0009 (2013.01); Y02E 10/563 (2013.01);
Abstract
Method and apparatus for reducing harmonic distortion. In one embodiment, the method comprises determining an inverter output current waveform; determining a plurality of harmonic components of the inverter output current waveform; determining, based on the plurality of harmonic components, a plurality of harmonic compensation components; and generating a compensating current comprising the plurality of harmonic compensation components.