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:
Mar. 01, 2011
Filed:
Aug. 15, 2008
Applicants:
Tung-chin Hsieh, Hsin-Chu, TW;
Kuang-yao Cheng, Hsin-Chu, TW;
Inventors:
Tung-Chin Hsieh, Hsin-Chu, TW;
Kuang-Yao Cheng, Hsin-Chu, TW;
Assignee:
Prolific Technology Inc., Nan Kang, Taipei, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/08 (2006.01); H02P 7/29 (2006.01);
U.S. Cl.
CPC ...
Abstract
After an AC motor generates a three-phase current, modulate the three-phase current to generate an original voltage space vector, and add three detecting vectors with a sum of zero after the original voltage space vector. While adding the three detecting vectors, sample the current to generate a sampling result. Then adjust the width of pulses generated by a pulse width modulator according to the sampling result.