Abstract
Aimed at the disadvantage of conventional ip-iq method based on instantaneous reactive power theory, a novel algorithm is presented in this paper. The detection of reactive current is obtained by voltage and current double closed-loop control based on ip-iq instantaneous value. The method is faced to impact load such as motor load increasing or decreasing suddenly. The good of using closed-loop is to make the load current follow the current issued by SVG in real time. That is to say the real-time following of reactive current is implemented. Simulation results verify the validity of the presented algorithm in the paper.
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