A New Approach to Hi-Power DC-DC Converters Under Large Load and Input Voltage Variations

DC-DC switch-mode converters recently have been used in many interesting applications due to their good specifications. Different control strategies such as sliding mode (SM) control based on VSS (variable structure system) theory and current mode (CM) control scheme have been applied to DC-DC switch mode converter types to improve their capabilities such as robustness, efficiency, and stability. This paper proposes a new control strategy by modification of two afore-mentioned schemes and analysis of system dynamics and simulation results are presented to validate the proposed new control scheme. Furthermore, main aspects for realization with DSP controllers are also included in details