All-SiC power module-applied single-stage ZVS-PWM AC-AC converter for high-frequency induction heating

This paper presents a new prototype of a single-stage ac-ac converter with Silicon-Carbide (SiC)-MOSFET / SiC-SBD integrated power module for induction heating (IH) applications. Switching and conduction power losses are effectively reduced by virtue of the 1.2kV-120 A All-SiC power module under the condition of zero voltage soft-switching (ZVS), as compared to the counterpart solution using a Si-IGBT / Si-PNDiode power module. The performances of the new prototype are evaluated by experiment, thereby demonstrating the advantageous properties such as high-efficiency and low switching noise due to the wide band-gap power module.