LCL-T Resonant Converter Based on Dual Active Bridge Topology in Solar Energy Applications

AUTOR(ES)

Osipov, Alexander Vladimirovich, Shinyakov, Yury Alexandrovich, Shkolniy, Vadim Nikolaevich, Sakharov, Michael Sergeevich

FONTE

J. Aerosp. Technol. Manag.

DATA DE PUBLICAÇÃO

2017-06

RESUMO

ABSTRACT: Resonant LCL-T converter can operate as stable voltage source, being fed from current, for instance, the photovoltaic battery. It is shown that LCL-T resonant tank has intrinsic ability to convert stable AC current into stable AC voltage thus parametrically regulating output voltage at a fixed value. This mode of operation is made possible by the use of active (synchronous) rectifier to recoup energy from the output back to the LCL-T resonant tank. Basic characteristics of resonant LCL-T converter regulated by phase shift between inverter and rectifier regardless of a solar battery current drift have been defined. It is shown that phase control guarantees 0 voltage and 0 current on switching; however, turn-off current could be substantial. Calculations and assumptions made in this study have been confirmed by simulation and hardware prototype.

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