A cascaded H-bridge seven-level APF research in outer superconducting power based on PSO

According to the scheme of SHMFF chain-type high voltage active power filter (APF), considering the non-linear characteristics of APF, fractional order PI controller was used to instead of ordinary PI controller. On this basis, the introduction of particle swarm optimization command adjusts current PI controller parameters to achieve optimal control of harmonic compensation. Finally, the working effect of PI controller parameter setting by artificial and PI controller parameter setting by PSO is comparative analyzed through simulation and experimental results. The results show that the strategy is correct, and it has a certain reference value. (authors)