Technical Paper
Development of Robust Traction Power Inverter Residing in Integrated Power Electronics for Ultium Electric Vehicles
2024-04-09
2024-01-2211
General Motors (GM) is working towards a future world of zero crashes, zero emissions and zero congestion. It’s “Ultium” platform has revolutionized electric vehicle drive units to provide versatile yet thrilling driving experience to the customers. Three variants of traction power inverter modules (TPIMs) including a dual channel inverter configuration are designed in collaboration with LG Magna e-Powertrain (LGM). These TPIMs were integrated with other power electronics components i.e., on-board charger and auxiliary DC-DC converters as needed inside Integrated power electronics (IPE) structure to eliminate redundant high voltage connections, increase power density, and achieve higher bus voltage stability. Latest power module design from LGM using state-of-the art sintering technology and double-sided cooled structure was utilized to achieve industry leading performance and reliability.