Work

High Frequency Power Cycling of Three-Phase Inverters for Aircraft Applications

Year: 2026

Type: article

Abstract: Accurate thermal cycle measurement is essential for estimating the lifetime of power modules, particularly those employing SiC MOSFETs characterized by extremely low thermal capacitance. This work presents a rigorous method for estimating the die temperature variation of SiC components within power modules utilized in three-phase inverters. The approach leverages high-speed thermal imaging to accurately characterize the individual thermal impedance of each die. The resulting thermal impedance model is coupled with high-fidelity loss calculations to predict dynamic SiC die temperatures during inverter operation. Experimental results obtained under conditions representative of a 540 V / 7.5 kW aeronautical inverter demonstrate the model's accuracy in tracking dynamic SiC die temperature variations.

Source: Eletrônica de Potência

DOI: 10.18618/rep.e202637

Authors: Alice H. T. Silva, Bernardo Cougo, Gilles Segond, Marco V. T. Andrade, Duc-Hoan Tran, Renata O. de Sousa, Lenin M. F. Morais

Institutions: Universidade Federal de Minas Gerais, IRT Saint Exupéry, Universidade Tecnológica Federal do Paraná

Language: English

Topic: Silicon Carbide Semiconductor Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: diamond

OpenAlex ID: W7223679956

FWCI:

Cites: 13

Cited by:

Related to: 10