1. 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,
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
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