Development, implementation and performance analysis of decoupler based control of dual source DC-DC converter

Abstract

This paper proposes a control strategy for dual-source buck buck-boost fused converter (DSBBFC), utilizing two inputs of different dc levels. The converter has to maintain output voltage and low voltage source current at their respective reference levels, irrespective of the variation in loads. A decoupling scheme is proposed for the DSBBFC, which in turn results in two individual control loops for the said converter. This developed control strategy ensures the control of the variables independently, irrespective of their coupling nature of the operation. The proposed control is implemented successfully in the simulation environment, and excellent dynamic performances are shown during the considered operating conditions. One laboratory prototype is developed to validate the theoretical findings. The real-time performances of the control are demonstrated and found to have a close agreement with their simulated counterparts.