A SiC JFET-Based Three-Phase AC PWM Buck Rectifier
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The switching characterization of the 1200 V SiC JFET prototypes is shown for a wide range of operating conditions such as switched voltage, switched current, and junction temperature. The SiC JFET is shown to be a fast-switching, low-loss device offering performance benefits compared to traditional silicon (Si) power devices of similar ratings.
Utilizing the SiC JFET, a three-phase ac buck rectifier is then demonstrated with a 150 kHz switching frequency and a rated power of 2 kVA. Additionally, improvements are made to the charge control scheme for the buck rectifier allowing power factor compensation and reduction of input current transients.
- Masters Theses