Improving the Steady and Transient Performance in the Buck Converter Using Sliding Mode Control

摘要

Thisarticle presents a non-linear controlling method to improve the steady state response of the buck converter. In this design, saturation of control signals and switching losses are taken into consideration and therefore, the control process is designed based on loss reduction. The converter is controlled on the basis of hysteresis modulation and switching frequency is corresponding to state variable movements in the vicinity of the sliding line. In addition, the dynsamic response of the system with the nominal load change is presented and the effect of the designed controller on improvement of this parameter is compared.