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:
Jun. 05, 2012
Filed:
Jan. 10, 2011
Applicants:
Martin Fornage, Petaluma, CA (US);
Mudhafar Hassan-ali, Petaluma, CA (US);
Tibor Bolfan, Rohnert Park, CA (US);
Inventors:
Martin Fornage, Petaluma, CA (US);
Mudhafar Hassan-Ali, Petaluma, CA (US);
Tibor Bolfan, Rohnert Park, CA (US);
Assignee:
Enphase Energy, Inc., Petaluma, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 29/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for identifying an islanding condition. In one embodiment, the method comprises altering a phase error response within a phase locked loop (PLL), and determining whether the islanding condition exists based on the altered phase error response.