A harmonic current prediction method for compensating control delay
Title：
A harmonic current prediction method for compensating control delay
Application Number：
 200710118109
Application Date：
 2007/06/29
Announcement Date：
 2008/01/09
Pub. Date：
Publication Number：
 101102048
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H02J 3/01H02J 1/12
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Tan Tianyuan, Jiang Qirong, Han Yingduo
Key Words：
 harmonic current, prediction method, control delay, compensate
Abstract：
 The invention is concerned with the harmonic current prediction method for compensating the controlling time-lapse, belongs to the harmonic current compensation technique field. Firstly, it measures the loading current instantaneous value in real time and low passes the filtering, and gets the phase corner of the electric-net voltage by phase-locked loop at the same time; predicts the current volume of the sampling time currently according to the electricity-net current phase corner and the fitting parameter vector; adjusts the fitting parameter vector according to the predicted error; then, according to the adjusted fitting parameter vector, the electricity-net voltage phase corner and the requested compensatory controlling time-lapse, it can predict the loading current volume of the tk+DeltaT time; and predicts the request compensatory harmonic current signal of the tk+DeltaT at last.
Claim：
Priority：
PCT：
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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
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