4H-SiC JBS diodes have been used in an inverter circuit, driving an actual three-phase ac induction motor at power levels up to 2.2 HP. Switching waveforms were measured and compared between inverters based on Si PiN diodes and 4H-SiC MPS diodes. The results clearly show a significant reduction in power dissipation, in both the diode and the IGBT switch, when SiC diodes replace the Si diodes. The reduction is most evident at the higher temperatures.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering