Multi-resonant converters as photovoltaic module integrated maximum power point tracker

Shaker Verlag Nov 2010, 2010. Buch. Book Condition: Neu. 21x14.8x cm. Neuware Module-integrated photovoltaic (PV) systems show high robustness against mismatching of the PVgenerator, e.g. reasoned by partial shading. Thus, the surface potential for PV can be increased by the unevenly irradiated surfaces using module-integrated PV. Consequently, the important, already sealed surfaces in urban areas can be utilized to contribute to a sustainable energy supply. Different module-integrated system concepts are reviewed and compared. The parallel module-integrated converter concept is identified as the most flexible, safe and cost effective solution. It consists of modules with module-integrated DC-DC converters, feeding into one DC-distribution line in parallel. Since grid connection and metering is performed in a central unit, the critical DC-DC converter is designed to minimum functionality, i.e. maximum power point tracking, safety and efficiency. The system is flexible and scalable for arbitrary modules and can be combined with classical string or central systems. In this work a multi-resonant LLCC-type converter providing galvanic isolation is identified as the best topology, regarding soft-switching of semiconductor devices, high part-load efficiency and controllability. Detailed investigations are carried out for three research foci of the DC-DC converter. With the goal of high converter efficiency, first design...

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