Control strategy of virtual synchronous generator combined with active power filter
DOI：10.7667/PSPC171359
Key Words:grid-connected inverter  virtual synchronous generator  active power filter  multi-function  power quality
Author NameAffiliation
CAI Xiaofeng School of Mechanical Engineering, Henan University of Engineering, Xinzheng 451191, China 
ZHANG Hongbo School of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, China 
LI Xin School of Safety Engineering, Henan University of Engineering, Xinzheng 451191, China 
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Abstract:A novel combined control strategy for both virtual synchronous generator and Active Power Filter (APF) is proposed. The relationship between the reference current of virtual synchronous generator and the harmonic voltage of power network is analyzed, the necessity of extracting the fundamental voltage for the reference current generation in the combined control strategy is demonstrated, and a virtual generator reference current generation algorithm based on multiple second-order generalized integrator structure is given. The shock current caused by the application of virtual synchronous generator in the multi-function grid-connected inverter is analyzed, and the improvement method is put forward. System simulation is carried out on Matlab/Simulink and simulation results verify the validity of the proposed control strategy. This work is supported by Scientific and Technological Breakthrough Plan of Henan Province (No. 172102310757 and No. 182102210333).
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