IGBT Energy Losses Analysis and Heat Dissipation System Design of Three-level Inverter

Abstract

Abstract According to the needs of the design and development of three-level inverter, the paper introduces the design process of the inverter cooling system in detail. Firstly, this paper proposes a calculation method of the energy losses in the insulated gate bipolar transistor(IGBT) and freewheeling diode(FWD), and calculates the energy losses of the IGBT module in the inverter according to the method. Otherwise, a set of the inverter forced air cooling heat dissipation system is designed, and the simulation of the finite element analysis is used for the analysis and optimization of the system. Finally, the test shows that the temperature rise of the IGBT module is within the reasonable range, which verifies the availability and feasibility of the proposed method and the designed system.