Microinverter with pulse-density modulated HFAC-link and active decoupling circuit

This paper proposes a pulse-density modulated flyback-based microinverter with high-frequency ac link and active decoupling circuit. The converters structure and basic operating principle are analyzed. The advantages of utilizing an active decoupling circuit and the demand for using pulse-density modulation are explained. The operation of the proposed microinverter was verified by experiment.