A Simplified Analytical Model for a Current-Fed Force-Commutated Converter

The current-fed force-commutated converter (CFFCC) has recently received considerable attention in the electric drives area. It may also have future power conversion applications in electric utility systems. In order to facilitate the study of CFFCC systems a simplified converter model is developed and investigated in this paper. The simplified model is a quasi-steady-state representation based on an average value and fundamental frequency formulation of the circuit equations. Comparisons with exact circuit solutions and a detailed analog computer simulation demonstrate the validity of the simplified model under steady-state and transient conditions.