Control of Switched-Mode Boost Converter by using classical and optimized Type controllers

Abstract

DC-DC power supplies are playing significant role in different domains of engineering applications. Some converters like boost, buck-boost, and fly-back have a right-half-plane zero (non minimum phase system), so it is difficult for the PID controller to exhibit good performance with load, line variations and parametric uncertainty. In this proposed work, design and implementation of Type controllers have been performed by using k-factor approach and two different optimization techniques (Gravitational Search Algorithm (GSA) and Particle Swarm Optimization (PSO)) for obtaining better stability and performance for a closed loop DC-DC Switched Mode Boost Converter. The closed loop control system has been implemented in real time dSPACE platform. The comparative closed-loop performances of a boost converter with classical and optimized Type II/Type III controllers have been produced. Simulations and experimental results are provided to demonstrate the effectiveness of optimized controllers for the proposed converter. The presented works particularly design & implementation of optimized Type controller for switch mode converters has not been reported earlier in any literature.