Modeling and Simulation of the Averaged Dynamics of PWM Converters Operating in CCM and DCM

The work concerns the problem of modeling and simulation of the averaged dynamics of PWM converters, which may operate alternately in the continuous current mode (CCM) and the discontinuous current mode (DCM). To capture different descriptions of converter dynamics in different current modes, the hybrid system concept is utilized. The derivation of the hybrid system, which models the average dynamics of the exemplary converter, is presented in details. The performance of the proposed hybrid systems is confirmed by numerical simulation tests.