BULLETIN of the

POLISH ACADEMY of SCIENCES

TECHNICAL SCIENCES

BULLETIN of the POLISH ACADEMY of SCIENCES: TECHNICAL SCIENCES
Volume 57, Issue 4, December 2009

Power Electronics in Renewable Energy Systems

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A bidirectional DC-DC converter for renewable energy systems

S. JALBRZYKOWSKI, and T. CITKO
To improve the energy quality, most of the renewable energy systems include an energy storage element charged by the bidirectional DCDC converter. This paper proposes the bidirectional DCDC converter which employs the two bridge configuration resonant classE converters on the both sides of the isolating transformer. The low side converter is controlled as step up and the high side converter is controlled as step down. The proposed system is characterized by good dynamic properties and high efficiency because the converter transistors are switched in ZVS conditions. A theoretical analysis to provide relations for system design, and the laboratory model investigations to validate the system characteristic are given in the paper.
Key words:

bidirectional, isolated, energy storage system, DC-DC converter.


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Copyright ® Bulletin of the Polish Academy of Sciences: Technical Sciences

January 2010