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. 22, 2008
Filed:
Oct. 01, 2004
Duo Deng, Canton, MI (US);
Kenneth J. Farkas, Brighton, MI (US);
Anil Tuladhar, Dearborn Heights, MI (US);
Kerry E. Grand, Chesterfield, MI (US);
Duo Deng, Canton, MI (US);
Kenneth J. Farkas, Brighton, MI (US);
Anil Tuladhar, Dearborn Heights, MI (US);
Kerry E. Grand, Chesterfield, MI (US);
Continental Automotive Systems US, Inc., Auburn Hills, unknown;
Abstract
Cycle error correction is performed in an electronic power system to compensate for a difference between an AC grid side frequency and an AC load side frequency. The electronic power system includes an electronic power inverter, such as one usable with an uninterruptible power supply. Cycles of signals indicative of the AC grid power and the AC load power are counted and compared to obtain a cycle error value. If the cycle error value exceeds a first value to indicate that AC load side frequency is too high or too low, then compensation is performed to change the AC load side frequency to be closer to the AC grid side frequency. If the cycle error value falls below a second value to indicate that the AC grid side frequency and AC load side frequency are sufficiently close to one another, then the compensation is deactivated.