Electrifying the world is one of the pragmatic solutions for reducing carbon footprint. Electric transportation, renewable energy generation, electric storage, smart and micro grid technologies, as well as digitalization are essential parts of sustainable electricity systems. These technologies are underpinned by power electronics as the core of their energy conversion process. The overall performance of modern energy systems relies on the reliable operation of power electronics which needs accurate and optimized design, planning and control of power converters.

This tutorial is divided into two parts: This second part “Reliability in Power Electronic Systems” briefly repeats some basics on reliability covered in part one “Reliability in Power Electronic Converters” and then goes on with specific aspects for systems reliability. Here, also fundamentals in artificial intelligence are introduced, case studies which use artificial intelligence for condition monitoring and intelligent maintenance are presented.
It aims to present the latest advances in physics-based reliability modelling and analysis in modern power electric based power systems (PEPS). Furthermore, the model-based techniques to cost-effectively enhance the reliability of power electronic systems will be addressed. Several examples will be provided illustrating the importance of power electronics reliability in overall power system performance as well as the effectiveness of the techniques in enhancement of overall system reliability.

The main goals are: 

• Understanding reliability engineering and probabilistic analysis application in PEPS
• Model-based hierarchical reliability assessment in PEPS from device to power system level
• Model-based reliability management and enhancement in PEPS including design for reliability, control for reliability, and maintenance planning

This tutorial covers comprehensive concepts of reliability modelling, analysis and enhancement in power electronic based power systems. Therefore, it would be fruitful for graduate students and senior researchers both from industry and academia who are interested in converter design, grid modernization, reliability modeling and enhancement in power electronics based power systems.

Prerequisite: Visiting Part one “Reliability in Power Electronic Converters” is strongly recommended.
All presentations and discussions will be in English.