iPES-Thermal (Thermal Problems in Power Electronics)

In this educational module thermal effects being important for the dimensioning and operation of power electronic converters In connection with the increasing requirements on the power density and reliability of power electronic a basic understanding of thermal problems will become more and more important for the engineer. Besides basics we also provide applets visualizing effects like thermal runaway and paralleling of power semiconductor devices. Further applets will be added, and translations into other languages than English will be provided in the future.

Basics of Heat Transfer
Cooling a Heat-Sink with a Fan (Forced Convection)

Heat Conduction
Equivalent Thermal Model - Stationary
One-Dimensional Heat-Conduction - Transient
Transient Thermal Impedance

Simple Models of Heat Transfer
Accuracy of Thermal Equivalent Circuit Models
Heat Conduction in Multi-Layer Structures (Power Module)

Thermal Effects in Power Electronic Systems
Thermal Runaway of a MOSFET
Current Sharing of Parallel Connected Power Diodes
Transistor Junction Temperature of a PWM Inverter

Distribution of Losses in DC-DC Converters
Switching Frequency - DC-DC Boost Converter with IGBT
Relative On-Time of Power Switch - DC-DC Buck Converter with IGBT
Variable Input Voltage and Controlled Output Voltage - DC-DC Buck-Boost Converter with MOSFET