4.5 kV 120A SICGT and Its PWM Three Phase Inverter Operation of 100kVA class

4.5 kV 120 A SICGT with a chip size of 8 mm times 8 mm and a new high heat resistive resin capable of 400 degC operations were developed. The SICGT coated with the resin has a low leakage current of less than 5 times 10⁶ A/cm² at both 4.5 kV and 250 degC, a low VF of 5.0 V at 120 A, and short turn-on and turn-off times of 0.3 mus and 1.7 mus respectively. A SICGT module was built by mounting one SICGT and two 6mm times 6mm SiC pn diodes in a metal can package, and a 110 kVA PWM 3 phase inverter was developed by using six of the SICGT modules. The electric power capabilities of both the developed SICGT and the 3 phase inverter are the largest ones among the reported SiC switching devices and SiC inverters, respectively