The goal of this project is to develop a high-efficiency bidirectional DC-DC charger for hybrid EV battery charging. Work began in 1998, and was sponsored by Ford, Ecostar, Ballard, Army Research Lab and United Silicon Carbide.
Key Technologies:
Multiphase interleaved to reduce current ripple and passive components
Coupled magnetics for core loss reduction
Synchronous conduction mode operation to reduce switching loss
Efficiency Measurement Results:
Use regenerative connection to measure losses
Measured efficiency exceeds 99%
High power density with small inductor and reduced cooling requirement
