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August 27, 2003

Comparing DC-DC converters for power management in hybrid electric vehicles

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Authors

RSR.M. SchupbachArkansas Power Electronics InternationalJBJuan Carlos BaldaUniversity of Arkansas at Fayetteville

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Overview

Comparative engineering analysis evaluates component stresses across bidirectional DC-DC converters in hybrid electric vehicle interfaces, highlighting optimal topology selection.

Key Points

  • To analyze, design, and compare four bidirectional non-isolated DC-DC converter topologies for interfacing ultracapacitor energy sources in hybrid electric vehicle power management systems.
  • Derived analytical equations to quantify operational stresses on active and passive components for half-bridge, Cuk, SEPIC, and Luo topologies.
  • Plotted and evaluated component stress metrics as a function of the output-to-input voltage ratio (Vo/Vi) across wide voltage variations, using the half-bridge converter as a baseline.
  • Established parametric stress curves illustrating active and passive component burdens across varying voltage ratios for each topology.
  • Demonstrated how wide input-voltage requirements in ultracapacitor load-leveling applications impact component stress profiles relative to the standard half-bridge design.

Cite This Study

Schupbach et al. (2003) studied this question.

synapsesocial.com/papers/6a088913ab15ea61dee8ea5ahttps://doi.org/10.1109/iemdc.2003.1210630
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