The multi-phase 2-quadrant converter (MP2QC) is widely used in hybrid electric vehicles to connect the different voltage levels of the DC link and the energy storage system. In the design stage of the converter several parameters and elements like switching frequency, number of phases, passive and active components have to be determined depending on the requirements. Nowadays, design procedures are missing which allow a computer aided design of the converter and thus an optimization of the converter. In this paper a steady-state behavior analysis of the MP2QC is presented first. Based on the analysis a design algorithm is proposed so that an optimization of the converter components can be achieved. Besides the values of the components, the current and voltage stresses are calculated in the procedure. With these values the components can be further optimized in dependence on the optimization goal. By means of the algorithm an optimization of the converter regarding size, weight, costs, reliability, etc. is possible. In addition, the method with some modifications is suitable to optimize other kinds of multi-phase DC/DC converters with e.g. the SEPIC or forward converter as basic topology.
Design procedure of multi-phase 2-quadrant converters for hybrid electric vehicles
Entwurfsprozedur eines MP2QC-Gleichspannungswandlers für elektrische Hybridfahrzeuge
2006
7 Seiten, 9 Bilder, 6 Quellen
Conference paper
Storage medium
English
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