PWM Based Sliding Mode Control of DC-DC converters

Abstract

This paper presents a systematic approach to the design of fixed frequency Pulse Width Modulation (PWM) Based Sliding Mode(SM) Control for DC-DC converters in Continuous Conduction Mode (CCM). The mathematical models of the DC-DC converters are used to design the sliding mode controllers. The design methodology is clearly illustrated for two converters viz. Boost and Bi-Directional Buck Converters. The theoretical analysis is verified by simulations to test the designed controllers for their response to load, line and voltage regulation.