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

• Autor(a) principal: Osipov,Alexander Vladimirovich
• Data de Publicação: 2017
• Outros Autores: Shinyakov,Yury Alexandrovich, Shkolniy,Vadim Nikolaevich, Sakharov,Michael Sergeevich
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of Aerospace Technology and Management (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462017000200257
• topic: Spacecraft power supply system; Resonant converter; Bidirectional dual active bridge; LCL resonant converter; ZVS; ZCS

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.