Dc Voltage Control Strategy for Z-source Inverter Based on LADRC

In this paper, linear active disturbance rejection control (LADRC) is applied to the capacitance voltage control of z-source inverter, which contains linear extended state observer (LESO) and linear error feedback control rate. The input voltage of the inverter is stabilized by stabilizing capacitor voltage. The Z source network capacitor voltage can be quickly restored to the reference voltage when the DC supply voltage fluctuates. Thus, the anti-disturbance ability of z-source inverter is improved. Compared with nonlinear ADRC, the parameter setting process is simplified Simulation results show the validity of the theory.