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:
May. 30, 2017
Filed:
Aug. 09, 2012
Applicants:
Yogesh Popatlal Patel, Grafton, WI (US);
Lixiang Wei, Whitefish Bay, WI (US);
Inventors:
Yogesh Popatlal Patel, Grafton, WI (US);
Lixiang Wei, Whitefish Bay, WI (US);
Assignee:
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 23/08 (2006.01); H02M 1/12 (2006.01); H02M 5/458 (2006.01);
U.S. Cl.
CPC ...
H02M 1/126 (2013.01); H02M 5/4585 (2013.01);
Abstract
Power conversion systems and methods are presented for detecting filter capacitor resonance conditions in a power conversion system in which filter currents are measured and filtered using a bandpass filter, and one or more computed mean, RMS, and/or Fourier transform values are computed based on the filtered value(s). The computed measurement value or values are compared with a predetermined threshold and a suspected filter capacitor resonance condition is selectively identified based on comparison result.