Journal
2019 21ST EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE '19 ECCE EUROPE)
Volume -, Issue -, Pages -Publisher
IEEE
Keywords
Converter circuit; Converter control; DC-AC; Dual active bridge; Hardware; High frequency power converter; Microinverter; Modelling; Photovoltaic; Power Converter; Resonant converter; ZVS converters
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This paper presents the topology, modelling and control strategy for a single-phase grid-connected converter for photovoltaic (PV) applications based on the series-resonant dual active bridge (DAB). A state space large-signal model is derived for phase-shift based modulations, and a linearized model is presented for control design. A multi-loop control strategy is presented where a current-control loop regulates the current that the converter injects in-phase with the grid voltage, while a slower loop regulates the PV array voltage for MPPT. To verify the model and control strategy, simulation and experimental results are presented
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