PWM-based Multiple Surface Sliding Control of Boost DC-DC Converters

This paper deals with a multiple surface sliding control to regulate the output voltage of boost dc-dc converters. The input voltage and load resistance are considered as disturbances and they are estimated using disturbance observer. The estimate is used in the design of multiple surface sliding control to accomplish a high performance. The proposed control algorithm is an equivalent control approach which can fulfill regulatory and servo requirements. Theoretical analysis is presented to show closed loop behavior of the proposed scheme. The efficacy of the proposed control scheme is assessed by simulation under uncertainties in input voltage and load resistance. The proposed control scheme is compared with an existing disturbance observer based integral sliding mode control and it is shown that the proposed scheme outperforms the existing one.