Highly Integrated SiC EV/HEV Traction Drive Objective: Technical Approach: Accomplishments: Next Steps: Potential Impact: Adam Morgan, Yang Xu, Dhrubo Rahman, Wensong Yu, Douglas C. Hopkins, Iqbal Husain • Design and fabricate a 55kW SiC Inverter for an EV motor drive • Meet/exceed the DoE’s 2020 power density target of 13.4 kW/L • Provide hands-on experience and training for next-gen workforce • Functional integration: impingement cooling of power modules and inductors • PCB-based busbar solution for distributed DC-link capacitors • Low-profile, compact inverter design currently achieves power density of 12.1kW/L PMSM #1 module #2 module #3 module #4 module • Use of interleaved boosted inverter topology • Boost stage and inverter stage operating at frequencies of 35kHz and 70kHz, respectively • Passive components (DC-link capacitors, boost inductors) value and size reduction • Multi-physics simulation driven design • Custom design, using viable processes, enables functional integration; thus high power density and lower weight Total 200μF/900V • Open-loop hardware test of SiC inverter on RL-load, up to 55kW continuous • Address initial shortcomings of first design test results • Closed-loop hardware test of SiC inverter on dynamometer • Development of a marketable SiC-based inverter platform battery current battery current dc link current dc link current • Proliferation of clean, sustainable EV traction drives into commercial and industrial sectors to fight climate change • Establish the U.S. as a technological leader in design and manufacturing of WBG semiconductors