Article | REF: D3179 V1

Main Failure Modes and Safety Principles of Voltage Source Inverters

Authors: Frédéric RICHARDEAU, Arnaud GAILLARD

Publication date: May 10, 2017

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ABSTRACT

Today power electronics holds a key place in ensuring the energy efficiency of critical electrical systems in defense, healthcare, transport, energy and finance, where electrical safety and continuity of service are vitally important. The overall reliability of power electronic converters is a major issue that has to be addressed right from the design stage. Power semi-conductors are clearly the weakest devices in the chain, whether or not they cause a failure. Power electronics designers are the leading experts developing the necessary approach to overall reliability for power converters. After a general introduction, this article presents the classical failure modes and the main solutions that provide safety capabilities.

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AUTHORS

Frédéric RICHARDEAU: Research Director, CNRS - LAPLACE Laboratory, Joint Research Unit INP Toulouse - Static Converters Group. Lecturer at ENSEEIHT, GEA Department - Université Paul Sabatier – CNRS, Toulouse, France
Arnaud GAILLARD: Senior Lecturer - FEMTO-ST Institute, Université Bourgogne Franche-Comté (UBFC) Joint Research Unit – CNRS, Energy Department - University Bourgogne Franche-Comté, UTBM, Belfort, France

INTRODUCTION

This article is the first part of an introduction to voltage inverter reliability. The authors present the main fault modes and safety principles. The second article [D3180] covers the main redundancy structures and reconfiguration principles. The two articles have been written so as to form a coherent introductory package; nevertheless, in terms of form, they can be approached independently according to the reader's needs.

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KEYWORDS

voltage source inverter | failure mode | power semi-conductors | global reliability | critical failure

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Main fault modes and safety principles for voltage inverters

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Bibliography

(1) - HAHN (B.), DURSTEWITZ (M.), ROHRIG (K.) - Reliability of wind turbines – Experience of 15 years with 1 500 WTs, - Wind Energy : Proceedings of the Euromech Colloquium, pp. 329-332, Springer-Verlag, Berlin (2016).