Notice of Retraction Research on Bi-Directional DC-DC Converter For a Stand-Alone Photovoltaic Hybrid Energy Storage System

A novel stand-alone photovoltaic ultracapacitor/battery hybrid energy storage system is proposed. Compared with the traditional one, this system has high power density and high energy density, prolong the lifetime of battery, achieve the system more efficient and reliable etc. A digital control system for multiple-input bi-directional dc-dc converter is designed and implemented. Software and hardware implementation issuses are described . Finally, the simulated and experimental results show a good dynamic response achieved.

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