Thermal management of electronic devices and systems

Electrical engineering

Physics

Power module

Meteorology

Automotive engineering

Current density

Capacitor

Computer cooling

Inverter

Engineering

Traction motor

Voltage

Junction temperature

Busbar

Power (physics)

Heat sink

Electric vehicle

Materials science

Thermal

Power density

Quantum mechanics

Traction (geology)

Water cooling

Mechanical engineering

Coolant

A SiC-based high power density (34 kW/L) Electric vehicle (EV) traction inverter is developed for 105°C ambient temperature operation and 100 kW peak power output. The thermal properties of this high-temperature system are analyzed and the system is designed based on the thermal behavior of the switching devices. The liquid cooling system is designed and testing approach is proposed to estimate the maximum device die temperature. The key components, such as dc-link capacitors and dc busbar are designed and arranged to achieve high power density at high ambient temperature. The system prototype has been built and tested up to 60 kW continuous and 100 kW for 20 seconds, at 105°C ambient temperature and 65°C coolant temperature.

A SiC-Based 100 kW High-Power-Density (34 kW/L) Electric Vehicle Traction Inverter