Active disturbance rejection control of load-side converter for photovoltaic microgrid based on fuzzy theory

DC microgrid load-side voltage supply stability is an important prerequisite for realizing high-level operation of new energy power. In order to maintain the voltage stability of the low-voltage load side, this paper establishes a small-signal model of the low-voltage load-side converter, theoretically analyzes the basic principle of fuzzy self-immunity, and proposes a FLADRC control strategy with parameter self-seeking optimization. Finally, the performance difference between the proposed control strategy and the traditional LADRC control strategy and PI control strategy is analyzed by simulation under different working conditions to illustrate the correctness and effectiveness of the proposed control strategy.