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@PHDTHESIS{Dick:51785,
      author       = {Dick, Christian Peter},
      othercontributors = {de Doncker, Rik W.},
      title        = {{M}ulti-resonant converters as photovoltaic module
                      integrated maximum power point tracker},
      address      = {Aachen},
      publisher    = {Publikationsserver der RWTH Aachen University},
      reportid     = {RWTH-CONV-114037},
      pages        = {IV, 182 S. : Ill., graph. Darst.},
      year         = {2010},
      note         = {Zsfassung in dt. Sprache; Aachen, Techn. Hochsch., Diss.,
                      2010},
      abstract     = {Module-integrated photovoltaic (PV) systems show high
                      robustness against mismatching of the PV-generator, 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 rules are derived in
                      a holistic approach for the resonant tank comprising five
                      degrees of freedom. As second step, the integration of the
                      magnetic resonant tank elements into one
                      transformer-inductor device is analyzed. It is identified
                      and included in the design rules, that an important design
                      parameter of the previous step is only a function of
                      geometry and material of the transformer-inductor device.
                      Finally, the design and analysis of single- and three-phase
                      LLCC-type converter solutions are considered and
                      experimentally verified. Conclusions are given and detailed
                      aspects on how to make use of single-phase and three-phase
                      DC-DC converter advantages are qualified. A single-phase
                      multi-resonant module-integrated prototype converter is
                      presented. Corresponding to one of the design rules, i.e.
                      that the converter has to be designed to the specified
                      operation region, the transferable power is limited by the
                      resonant tank elements, not by hot spots. The critical
                      part-load efficiency reaches values up to $97.5\%$ at power
                      levels around 100 W.},
      keywords     = {Gleichspannungswandler (SWD) / Leistungselektronik (SWD) /
                      Photovoltaik (SWD) / Wirkungsgrad (SWD)},
      cin          = {614510 / 614500},
      ddc          = {620},
      cid          = {$I:(DE-82)614510_20140620$ / $I:(DE-82)614500_20201203$},
      typ          = {PUB:(DE-HGF)11},
      urn          = {urn:nbn:de:hbz:82-opus-32673},
      url          = {https://publications.rwth-aachen.de/record/51785},
}