Accurate Measurement of the Switching Losses of Ultra High Switching Speed CooIMOS Power Transistor / SiC Diode Combination Employed in Unity Power Factor PWM Rectifier Systems

摘要

The topic of this paper is a detailed analysis of the switching behavior of a CooIMOS / SiC diode combination applied in a 3.5kW single-phase unity power PWM rectifier system. The focus is on the development of guidelines to accurate measure the switching behavior and the turn-on and turn-off power losses at high switching speeds. Further subjects are the improved design of the power circuit, and the comparison of two high bandwidth current measurement methods applied in the power circuit.