Study on composite Control of Three-phase three-level Vienna rectifier
IOP Conference Series: Earth and Environmental Science(2020)
摘要
Abstract This paper analyzes the working principle of The Vienna rectifier and the control method of the current inner ring. In view of the low precision and poor current tracking effect of the traditional single PI current loop control method, a new compound control strategy combining PI control and repetitive control was proposed. This method not only keeps the advantage of fast response speed of PI control, but also has the ability of harmonic suppression and anti-interference of repetitive control. The qualitative analysis of the composite control method and the full analysis of the current inner loop controller using the composite control were carried out. Finally, the simulation was carried out in MATLAB. The simulation results proved the correctness of the proposed control strategy PI plus repeated composite control strategy.
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