Dynamic modeling and integral sliding mode controller design for the Cuk inverter

This paper proposes a PWM based integral sliding mode controller (ISMC) for the single-stage Cuk inverter. The fourth-order model of the Cuk inverter is derived first and it is simplified to use ISMC. Based on the simplified system model, the ISMC that consists of the equivalent control part plus the switching control part is designed and applied to the single-stage Cuk inverter. Comparing to conventional controller, the ISMC can accurately control the output current of the single-stage Cuk inverter. Simulation and experimental tests using the prototype of the single-state Cuk inverter were performed to validate the proposed control approach.