講座時間：2019年6月20日（周四）, 13:00—15:00

講座地點：泰山科研樓310

講座題目：Multiphase Voltage Source Inverter DC-link Capacitor Considerations

講座摘要：

The investigation methodology?and procedure for?arbitrary phase number two level voltage source inverter (VSI) DC-link?capacitors?are developed including VSI DC-link?capacitor introduction, multiphase VSI modelling?and investigation method?and?capacitor requirements?etc., based on which the DC-link?capacitor requirements?are?analytically?characterized for different phase number VSIs. Under the?equitable operating?conditions, the increase of the phase number inherently?alleviates the DC-link?capacitor requirements. Other factors,?e.g. switching strategies,?carrier waveformsand interleaving?techniques,?also determine the DC-link?capacitor requirements.?For the higher phase number VSIs, their increased?configuration flexibilities make it possible to further?decrease the DC-link?capacitor requirements. The study is partially validated?experimentally through the?3-?and 9-phase VSIs driving brushless permanent magnet?(BLPM) machines.?Finally, the?DC-link?capacitor design procedure is?proposed for two level multiphase VSIs.

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主講人簡介：

Nigel Schofield received the degrees of B.Eng. (Hons.) in Electrical Power Engineering, and Ph.D. for research on the field-weakening capability of brushless permanent-magnet traction machines from the University of Sheffield, UK.? He held academic posts at the Universities of Sheffield and Manchester, UK.? He has also been a Design Engineer in industry, UK.? From 2013 to 2017 he was Full Professor with Tenure in the ECE Dept. at McMaster University, Ontario, Canada.? In May 2017 he started in a new post as Professor in Electrical Engineering at the University of Huddersfield, UK.? His research interests include electro-magnetic power-trains for all- and hybrid-electric vehicles.

Prof. Schofield is a member of the IET and IEEE and a Chartered Engineer.

Professor Schofield will be joined by his PhD research student Dr Zipan Nie?（聶子攀博士）?who is currently a Postdoctoral Research Associate in the Department of Electrical Engineering, Tsinghua University, High Voltage Research Institute, Tsinghua University, Beijing, China.

Contact details:

Nigel Schofield

University of Huddersfield, UK

Email:?[email protected]

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