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Projects: Projects for Investigator
Reference Number EP/S00081X/1
Title Insulation degradation and lifetime of inverter-fed machines with fast switching (high dv/dt) converters
Status Completed
Energy Categories Other Power and Storage Technologies(Electricity transmission and distribution) 100%;
Research Types Basic and strategic applied research 100%
Science and Technology Fields PHYSICAL SCIENCES AND MATHEMATICS (Metallurgy and Materials) 50%;
ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering) 50%;
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Dr J Wang
No email address given
Electronic and Electrical Engineering
University of Sheffield
Award Type Standard
Funding Source EPSRC
Start Date 01 November 2018
End Date 31 October 2022
Duration 48 months
Total Grant Value £1,199,232
Industrial Sectors Aerospace; Defence and Marine
Region Yorkshire & Humberside
Programme NC : Engineering
Investigators Principal Investigator Dr J Wang , Electronic and Electrical Engineering, University of Sheffield (99.995%)
  Other Investigator Dr A Griffo , Electronic and Electrical Engineering, University of Sheffield (0.001%)
Professor P.H. Mellor , Electrical and Electronic Engineering, University of Bristol (0.001%)
Dr X Yuan , Electrical and Electronic Engineering, University of Bristol (0.001%)
Prof I (Ian ) Cotton , Electrical & Electronic Engineering, University of Manchester (0.001%)
Professor AC Smith , Electrical & Electronic Engineering, University of Manchester (0.001%)
  Industrial Collaborator Project Contact , Ricardo Consulting Engineers Ltd (0.000%)
Project Contact , Motor Design Ltd (0.000%)
Project Contact , Siemens plc (0.000%)
Project Contact , Safran Power UK Ltd (0.000%)
Project Contact , UTC Aerospace Systems (0.000%)
Project Contact , Rolls-Royce PLC (0.000%)
Project Contact , Control Techniques Dynamics Ltd (0.000%)
Project Contact , High Voltage Partial Discharge Ltd (0.000%)
Web Site
Abstract Rapid and transformative advances in power electronic systems are currently taking place following technological breakthroughs in wide-bandgap (WBG) power semiconductor devices. The enhancements in switching speed and operating temperature, and reduction in losses offered by these devices will impact all sectors of low-carbon industry, leading to a new generation of robust, compact, highly efficient and intelligent power conversion solutions. WBG devices are becoming the device of choice in a growing number of power electronic converters used to interface with and control electrical machines in a range of applications including transportation systems (aerospace, automotive, railway and marine propulsion) and renewable energy (e.g. wind power generators). However, the use of WBG devices produces fast-fronted voltage transients with voltage rise-time (dv/dt) in excess of 10~30kV/us which are at least an order of magnitude greater than those seen in conventional Silicon based converters. These voltage transients are expected to significantly reduce the lifetime of the insulation of the connected machines, and hence their reliability or availability. This, in turn, will have serious economic and safety impacts on WBG converter-fed electrical drives in all applications, including safety critical transportation systems. The project aims to advance our scientific understanding of the impact of WBG devices on machine insulation systems and to make recommendations that will support the design and test of machines with an optimised power density and lifetime when used with a WBG converter. This will be achieved by quantifying the negative impact of fast voltage transients when applied to machine insulation systems, by identifying mitigating strategies that are assessed at the device and systems level and by demonstrating solutions that can support the insulation health monitoring of the WBG converter-fed machine, with support from a range of industrial partners in automotive, aerospace, renewable energy and industrial drives sectors

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Added to Database 07/12/18