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PhD defence by Yi Zhang on Mission Profile-based System-Level Lifetime Prediction of Modular Multilevel Converters

Time

27.01.2020 kl. 13.00 - 16.00

Description

Yi Zhang, Department of Energy Technology, will defend the thesis "Mission Profile-based System-Level Lifetime Prediction of Modular Multilevel Converters"

TITLE

Mission Profile-based System-Level Lifetime Prediction of Modular Multilevel Converters

PHD DEFENDANT

Yi Zhang

SUPERVISOR

Professor Frede Blaabjerg 

MODERATOR

Associate Professor Tamas Kerekes

OPPONENTS

Associate Professor Amjad Anvari-Moghaddam, Dept. of Energy Technology, Aalborg University (Chairman)
Professor Bhim Singh, Indian Institute of Technology Delhi, India
Professor Axel Mertens, Leibniz Universität Hannover, Germany

ABSTRACT

How to size the major devices/components of the MMC with compromised costs and design margins, while fulfilling a specific reliability target is one of the challenges for Modular Multilevel Converters (MMCs). To cope with the challenge, a systematic reliability evaluation is a prerequisite. This PhD project firstly studies the system-level power loss model for all major components in MMCs. Then, the electro-thermal modelling of the MMC is investigated. Based on these two models, a mission profile-based lifetime prediction method is proposed for the MMC system. The outcomes serve as a first step for developing realistic reliability analysis and model-based design methods for full-scale MMCs in practical applications. All the research developments have been verified by simulations and experiments. The contributions have been presented in 5 journal and several conference papers.

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PhD defence by Yi Zhang on Mission Profile-based System-Level Lifetime Prediction of Modular Multilevel Converters

ALL ARE WELCOME. THE DEFENCE WILL BE IN ENGLISH.

AFTER THE DEFENCE THERE WILL BE AN INFORMAL RECEPTION AT PONTOPPIDANSTRAEDE 111 IN ThE COFFEE ROOM.

 

Host

Department of Energy Technology

Address

Pontoppidanstræde 111, auditorium 1.177

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