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This paper suggests another candidate for high-power onboard charger for electric vehicles. It is based on a discontinuous conduction mode (DCM) power factor correction (PFC) converter with harmonic modulation technique that improves the power factor in DCM PFC operation and a two-stage dc/dc converter composed of a resonant converter and a DCM buck converter. Separating the functions of the dc/dc stage into control and isolation helps to reduce the transformer by using high-frequency resonance. The feasibility of the proposed charger has been verified with a 6.6-kW prototype.
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Lee et al. (2013) studied this question.
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