1. Evaluation of SiC BJTs for High-Power DC–DC Converters.
- Author
-
Calderon-Lopez, Gerardo, Forsyth, Andrew J., Gordon, David L., and McIntosh, Jim R.
- Subjects
- *
DC-to-DC converters , *SILICON carbide , *POWER electronics , *BIPOLAR transistors , *ELECTRIC vehicles , *POWER semiconductors - Abstract
The design of a 200-A, all-SiC power-module-based on bipolar junction transistor devices is described, and the impact of the module is assessed on the performance of a 50-kW dc-dc converter for electric vehicle applications, particularly the overall weight and efficiency. Using a hard-switching dual-interleaved topology, which has proven high efficiency and high-power density capability, the operation of a 50-kW, 75-kHz all-SiC converter is compared with that of an insulated-gate bipolar transistor-based silicon converter, switching at 25 kHz, each providing 600-V output. The results show that the total losses are reduced by almost 40%, whilst the overall weight is reduced by 27%, achieving a power density of 10.5 kW/kg. Experimental results of the SiC converter operating at 220-600 V, 52.8 kW are provided, showing an efficiency of 97%. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF