A Novel Low-Loss Modulation Strategy for High-Power Bidirectional Buck ${\bm +}$ Boost Converters

  title={A Novel Low-Loss Modulation Strategy for High-Power Bidirectional Buck  \$\{\bm +\}\$ Boost Converters},
  author={Stefan Waffler and J. W. Kolar},
  journal={IEEE Transactions on Power Electronics},
A novel, low-loss, constant-frequency, zero-voltage-switching (ZVS) modulation strategy for bidirectional, cascaded, buck-boost DC-DC converters, used in hybrid electrical vehicles or fuel cell vehicles (FCVs), is presented and its benefits over state-of-the-art converters and soft-switching solutions are discussed in a comparative evaluation. To obtain ZVS with the proposed modulation strategy, the buck+boost inductance is selected and the switches are gated in a way that the inductor current… CONTINUE READING
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