Active filter harmonic current test delay time compensation method and system
Title：
Active filter harmonic current test delay time compensation method and system
Application Number：
 02129371
Application Date：
 2002/09/06
Announcement Date：
 2003/03/12
Pub. Date：
Publication Number：
 1402406
Announcement Number：
 1206784
Grant Date：
 2005-6-15
Granted Pub. Date：
 2005-6-15
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H02J 3/01
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Zhao Chao, Yang Geng, Du Jihong
Key Words：
 Active filter, harmonic current test, delay time, compensation
Abstract：
 The invention belongs to the technical area of compensating the delayed time in the harmonic current detection. It is characterized by that it improves the conventional instant space vector method based on the theory of instant reactive power. When the coordinate transformation is carried out, the "delta" "theta" angle is added to the conversion matrix in order to compensate the delayed time, "delta" "theta"=n "omega" "delta" T here n is harmonic degree, "omega" is the angular frequency of the principal wave, "dlta" T is the delay time. Thus, the issue of the delayed time of the digital controller is solved. The invention realizes the real-time compensating the harmonic current, guarantees the compensation characteristic of the active filter as well as avoids the need of the device with high calculating speed so as to reduce the cost.
Claim：
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PCT：
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