Consideration on IGBT Module Lifetime for Electrical Vehicle (EV) Applications

Inhalt:
Considering the effects of start and stop, acceleration and deceleration, motor outputs maximum torque at low speed and uphill or motor yields minimum torque at maximum speed on IGBT life, an analysis of IGBT power cycling and thermal cycling capability is made in this paper. It can be summarized that traditional industrial module has the potential risk of life expiration in electric vehicles. EV IGBT T-PM (Transfer-molded Power Module) which focuses on improving power cycling capability and thermal cycling capability can completely satisfy the life requirement of electric vehicle. It provides a reference for the EV inverter design engineers to choose the appropriate IGBT module.