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:
Aug. 31, 2010
Filed:
Aug. 28, 2007
Chin-chang Wu, Kaohsiung, TW;
Hung-liang Chou, Kaohsiung, TW;
Wen-pin Hsu, Kaohsiung, TW;
Yu-ting Kuo, Kaohsiung, TW;
Jiunn-jye Yang, Kaohsiung, TW;
Chin-Chang Wu, Kaohsiung, TW;
Hung-Liang Chou, Kaohsiung, TW;
Wen-Pin Hsu, Kaohsiung, TW;
Yu-Ting Kuo, Kaohsiung, TW;
Jiunn-Jye Yang, Kaohsiung, TW;
Ablerex Electronics Co., Ltd., Hsintien, TW;
Abstract
An active power filter includes an energy storage capacitor, an inverter, a filtering circuit and a controller. The inverter is controlled to act as a virtual resister at a fundamental frequency for compensating for the power loss of the active power filter, to act as a virtual capacitor at a fundamental frequency for compensating for a fundamental reactive power of the load, and/or to generate a harmonic current for suppressing the harmonic currents of specific orders of the load.