Design of controller using reduced order modeling for LED driver circuit

摘要

This paper proposes a new control design strategy for Single-Ended Primary Inductor Converter (SEPIC) fed Light Emitting Diode (LED) driver circuit. The concept of model order reduction has been employed to design a proportional integral derivative (PID) controller for the SEPIC converter. In order to achieve reduced order model of the higher order SEPIC converter, operated in continuous conduction mode, cuckoo search algorithm along with Pade approximation has been utilized. Further, the unknown parameters of PID controller for reduced order model are obtained by minimizing integral square error (ISE) using cuckoo search (CS) algorithm. It was observed that the obtained results are comparable with well-known techniques and recently published work. It is revealed that the PID controller designed for reduced order model also exhibit improved performance as compared to the SEPIC converter with compensator.