Additional Impacts of WBG Technology Affiliate Member Project Title: 200 kW 1050 V DC Bus SiC Converters for Heavy-Duty All-Electric Vehicles. Objectives: Commercialization of 200 kW 1050 V DC bus SiC converters in battery-powered heavy-duty off-highway vehicles. Major Milestones: SiC/GaN converter systems demonstration in all-electric vehicle either by experimentation in-lab/in-vehicle demo. Deliverables: SiC converter technology prolongs all-electric vehicle uptime > 5% vis-à-vis silicon IGBT converter technology SOPO Task No.: BP5-4.1b TPOC/PI: Dr. Brij N. Singh, SinghBrijN@JohnDeere.com WBG Technology Impact Additional Impacts of WBG Technology Higher DC bus voltage, higher switching frequency, higher junction temp and heat flux, higher kW/L and kW/kg, smaller passives and system level advantages. Heavy-duty off-highway & on-highway all-electric vehicles. Production intent technology ready by 2020 Switching frequency (> 15 kHz with SiC versus 8 kHz with Si). DC bus cap (< 200 µF with SiC versus 1500 µF with Si). Inverter power density ( > 20 kW/L with SiC versus ~11 kW/L with Si), cost-effective interface with battery-pack SiC converter systems enable key features while achieving cost-competitiveness at system level vis-à-vis silicon-based converter. John Deere will design and manufacture SiC converters in Fargo, North Dakota and heavy-duty all-electric vehicles will be manufactured in Iowa. JDES will hire numerous interns and provide them with WBG PE experience. Cost-competitive and performance-superior SiC converter can be realized by technology and manufacturing innovations. Technology maturity : TRL 3 to TRL 6/7 PowerAmerica Public Release 2018