Implementation of PSO-based fixed frequency sliding mode controller for buck converter

This study presents the application of the optimized Fixed Frequency Sliding Mode (FFSM) Controller for a Synchronous Buck Converter. The sliding coefficient of the controller, which affects the controller performance, is optimized by using Particle Swarm Optimization (PSO). In order to analysis the performance of the optimized controller, a DC-DC Buck converter which has a variable structure and nonlinear model is used as a test-bed. The controller design procedure and optimization approach are presented in details. Simulation and hardware implementation results are provided to demonstrate the performance of the optimized controller under load and line variations.