Development of a 90kW, Two-Phase, Bi-Directional DC-DC Converter for Power Dense Applications
Abstract
In this summary, the preliminary design and test results of a two-phase interleaved, non-isolated, bi-directional DC-DC converter (BDC) for hybrid electric vehicle applications are presented. The converter was initially designed for sustained operation at 90kW, providing power flow in either direction between the low-voltage vehicle battery pack (nominal 320V) and its high-voltage load bus (nominal 600V). Strong design emphasis was placed on high power density, and high temperature operation. Initial goals for these criteria were 8.3 kW/liter and 80 deg C liquid coolant temperature, respectively. Tests using commercially available components, with less than optimal heat sinking and 25 deg C coolant resulted in maximum output power levels of 50kW in both buck and boost modes at an estimated power density of 2.7 kW/liter. Improvements in future design modifications are discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2004
- Accession Number
- ADA433112
Entities
People
- C. W. Tipton
- Damian Urciuoli
- Donald Porschet
Organizations
- United States Army Research Laboratory