Improved Extended Phase Shift Modulation for Peak Current Reduction in High Frequency Isolated Matrix-Type Inverters

Le résumé fourni par la source

High-frequency isolated matrix-type inverters (HFIMIs) enable direct DC/AC power conversion without intermediate energy storage elements, thereby minimizing power conversion stages while enhancing efficiency and power density. Nevertheless, these converters suffer from high switch current stress, which compromises efficiency particularly in high-current applications. To address excessive peak inductor currents in single-stage single-phase HFIMIs operating under conventional modulation, this paper introduces an improved extended phase shift (IEPS) modulation strategy without additional circuits. The proposed method integrates extended phase shift modulation with pulse width modulation (PWM), establishing an optimized control trajectory that reduces peak currents. The comparative analysis against recently reported techniques confirms the proposed scheme significantly reduces current stress, resulting in superior overall converter efficiency relative to conventional approaches. Experimental validation through prototype testing further corroborates the strategy’s viability and effectiveness.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.