Condition Monitoring Power Electronics for Reliability (COMPERE)

Completed

Renewable Energy Sources(Wind Energy)
Not Energy Related

Basic and strategic applied research

ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering)

Not Cross-cutting

Professor L Ran
School of Engineering
University of Warwick

Standard

EPSRC

01 November 2007

31 October 2010

36 months

£290,409

Electrical engineering

West Midlands

Energy : Engineering

Professor L Ran, School of Engineering, University of Warwick

Professor P J Tavner, Engineering, Durham University

Project Contact, Control Techniques Drives Ltd
Project Contact, Pektron Group Ltd
Project Contact, Dynex Semiconductor Ltd
Project Contact, Areva
Project Contact, GE Aviation

Power Electronic Converters are key elements in many safety-critical, high-reliability, electrical systems working in uncertain and harsh environments. Examples include aerospace power supplies and servo converters, marine propulsion and traction drives, and offshore renewable energy generator systems.The traditional approaches to achieve high converter reliability are to de-rate the semiconductor devices and to include redundancy in the system configuration. These approaches can increase theMean Time Between Failures of converters but will not prevent a catastrophic failure from happening. The aim of this research is to develop a new approach of monitoring the converter device degradation over a period of time and provide the ability to predict failures before they happen.The research will address the challenges of carrying out and understanding the results of key measurements in order to derive information about the internal state of the semiconductor devices in real-time operatingconditions. The mechanisms leading to the aging and failure of the devices will be investigated, and a relationship between the device condition and its terminal characteristics established. Condition monitoring techniques will be based on converter terminal electrical signals, which are interpreted together with information about the thermal and load conditions of the converter system. Experiment, and computer modelling and simulation in the thermal, low frequency and high frequency electricaldomains will be carried out to develop the condition monitoring techniques. The results will be valuable to device manufacturers, manufacturers of power electronic converters, and to the end users of such systems, particularly in critical applications

01/01/07