Analysis of coupled-inductor configuration for an interleaved high step-up converter

Wilmar Martinez, Jun Imaoka, Yuki Itoh, Masayoshi Yamamoto, Kazuhiro Umetani

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu


High step-up converters are widely used in sustainable energy systems and recently used in automotive applications due to their high voltage gain capability. Nevertheless, with the purpose of obtaining a higher voltage gain, in comparison with conventional boost converters, current high step-up converters often employ additional multiplier cells, which may lead to significant cost-up and low power density. Therefore, a novel two-phase interleaved high step-up converter is proposed in order to minimize additional circuit volume used to achieve large voltage gain. The proposed converter addresses the purpose by a particular coupled inductor where three windings are installed in one or two cores. As a result, the proposed converter can achieve higher voltage gain than the conventional topologies by adding a winding and two diodes to the interleaved two phase boost chopper, besides the coupled-inductor configuration. This paper evaluates two arrangements of the coupled-inductor configuration of the proposed high step-up converter: 1. Three windings integrated in only one core and 2. Two independent inductors with a shared winding. The result revealed that the proposed converter shows higher voltage gain than the normal boost converter and the magnetic integration in the coupled-inductor configuration further increases the voltage gain by 20%.
Otsikko2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)
ISBN (elektroninen)978-8-9570-8254-6
DOI - pysyväislinkit
TilaJulkaistu - 30 heinäkuuta 2015
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa

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