Aiming to obtain bidirectional DC–DC converters with wide voltage conversion range suitable for hybrid energy storage system, a review of the research status of non-isolated converters based on impedance networks and isolated converters based on transformer are presented.
Abstract: The abstract of this paper to design and implementation of bi-directional dc-dc converter for energy storage system. In upcoming generation, the global energy level may increase 2% per year. The conventional electrical power generation produce environmental pollution and global warming.
Additionally, an evaluation system for bidirectional DC–DC topologies for hybrid energy storage system is constructed, providing a reference for designing bidirectional DC–DC converters. The performance of eight typical non-isolated converters and seven typical isolated converters are comprehensively evaluated by using this evaluation system.
Non-isolated bidirectional DC–DC converter is an impedance network composed of inductor, capacitor and switch to realize direct DC–DC conversion. A transformer is added between DC and DC in the non-isolated bidirectional DC–DC converter to realize DC-AC-DC voltage conversion.
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