Jaya Optimization-Based PID Controller for Z-Source Inverter Using Model Reduction

It is well-known that a Z-source inverter (ZSI) depicts non-minimum phase characteristics due to a right half plane zero (RHPZ) in its shoot through duty ratio to output voltage transfer function. The RHPZ creates problems in design of a PID controller for such type of systems by imposing the bandwidth limitations and control actions. In this article, the Jaya optimization approach is adopted to reduce the order of ZSI and to obtain the optimized tuning parameters of PID controller. The peak value of DC link voltage is indirectly calculated by measurement of the input supply voltage and the capacitor voltage. The transfer function of control to peak DC link voltage of traditional ZSI is used to get the tuning parameters of PID controller. The MATLAB/Simulink simulation platform is utilized to validate the proposed approach.