Design of Proportional Integral Derivative (PID) controller for impedance-source inverter

This paper presents the design of voltage mode control for impedance-source inverter using Proportional Integral Derivative (PID) controller. The proposed controller controls the output AC voltage by regulating the DC-link voltage at the input side. Mathematical model of the inverter is developed and the control parameters are design via Bode plot. Simulation under source and load disturbances is carried out to validate the design. From the results, it was shown that the proposed controller is capable to regulate the AC output voltage well.