Resonance analysis for DC-side laminated bus-bar of a high speed switching circuit

Recently, research and development of next-generation power semiconductors, such as SiC and GaN, have been done, then high speed switching inverter circuit has also been discussed. On the other hand, high-di/dt and high-dv/dt switching operation may cause electromagnetic noise and surge voltage. Therefore it is important to know and calculate stray inductance of a DC-side bus-bar inductance. This paper proposes a laminated bus-bar design procedure in consideration of the bus-bar inductance and capacitance. It is confirm that the validity of the design procedure will be shown using the buck chopper circuit rated at 400 V, 70 A.