A 70kW 3-Level Active Neutral Point Clamped Traction Inverter PCB Design for Stray Inductance and Thermal Performance Optimization

This paper presents a detailed PCB design for a 70kW 3-level Active Neutral Point Clamped traction inverter. The proposed design is focused on stray inductance reduction and thermal performance optimization. The voltage overshoot and maximum allowable stray inductance of the busbar are investigated in detail. Current density and its effect on the PCB temperature are analyzed using 3D finite element analysis.