Fractional order PID controller for tuning interleaved ]cuk converter

Abstract

In this paper, the author has focussed on the detailed modeling and analysis of a variant of cuk converter i.e. Interleaved Cuk converter (ICC), which along with having the benefits of conventional cuk converter also provide additional advantages of ripple cancellation, increased current and voltage rating thereby high rating applications can be successfully taken advantage of. Feedback control is a part of any stable system and to gain desired response, a progressive optimization algorithm which is the Genetic Algorithm (GA) is used here to tune the control variables; PID control gains and additional freedom of control are present where fractional order PID (FOPID) controller variables λ and µ can be utilized with the traditional PID controller for the desired response. The simulation results are presented for servo and regulatory response, parameters current and voltage results along with the results when variations are subjected to the input voltage as well as the reference voltage. The results confirm the desired results are obtained with the ripples confined to 1% and settling of the output voltage at the setpoint value