Analysis and Implementation of a DC-DC Converter for Hybrid Power Supplies Systems



Yang, Lung-Sheng;Lin, Chia-Ching

  • 투고 : 2015.03.14
  • 심사 : 2015.05.18
  • 발행 : 2015.11.20


A new DC-DC power converter is researched for renewable energy and battery hybrid power supplies systems in this paper. At the charging mode, a renewable energy source provides energy to charge a battery via the proposed converter. The operating principle of the proposed converter is the same as the conventional DC-DC buck converter. At the discharging mode, the battery releases its energy to the DC bus via the proposed converter. The proposed converter is a non-isolated high step-up DC-DC converter. The coupled-inductor technique is used to achieve a high step-up voltage gain by adjusting the turns ratio. Moreover, the leakage-inductor energies of the primary and secondary windings can be recycled. Thus, the conversion efficiency can be improved. Therefore, only one power converter is utilized at the charging or discharging modes. Finally, a prototype circuit is implemented to verify the performance of the proposed converter.


High step-up converter;Hybrid power supplies system;Renewable energy


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