Seung-Rae Jo, "모듈형 멀티레벨 컨버터의 신뢰성 디자인을 위한 IGBT 모듈 접합부 온도 기반 모의실험장치," 아주대학교 공학석사 학위 논문, 2020. > Paper

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Thesis Seung-Rae Jo, "모듈형 멀티레벨 컨버터의 신뢰성 디자인을 위한 IGBT 모듈 접합부 온도 기반 모의실험장치," 아주대학교 공학석사 학위 논문, 2020.

2020

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This thesis presents temperature-based simulator of insulated gate bipolar transistor (IGBT) modules for reliability design in modular

multilevel converters (MMCs). The MMC is composed of various components, and the IGBT is the main component determining the

reliability of the MMC. The failure of IGBTs is mostly due to the junction-temperature swings; thus, the thermal profile of the IGBT

should be established to predict the lifetime. The thermal behavior depends on the current flowing to the IGBT, and the load-current

profile is related to the application. In order to establish the thermal profile of the IGBT, the proposed hardware simulator provides

various output currents while the junction temperature is measured simultaneously. In addition, a controller design is presented for

simulation of the arm current, which includes a direct current (DC) component as well as an alternative current (AC) component with

a fundamental frequency. The validity and performance of the proposed hardware simulator and its control methods are analyzed

by various experimental results. 

 

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