Academic Staff

Power Electronics – electric power conversion, planar coreless transformer technology, wireless power transfer, sustainable lighting technology, renewable energy technologies and smart grid technology

“Discoveries come from the resonance of human minds and the creation. It is important to know the Creator. So do read the Bible.”

Professor Ron Hui received his BSc (Eng) Hons at the University of Birmingham in 1984 and a D.I.C. and PhD at Imperial College London in 1987. He was a Lecturer at the University of Nottingham, UK in 1987–90. In 1990, he joined the University of Technology, Sydney, and was appointed Senior Lecturer at the University of Sydney, in 1992, where he became a Reader in 1995. He joined the City University of Hong Kong (CityU) as a Professor in 1996 and was promoted to Chair Professor in 1998. In 2001–04, he served as an Associate Dean of the Faculty of Science and Engineering at CityU. From July 2011, he holds the Chair Professorship at the University of Hong Kong and Imperial College London.

He has published over 250 technical papers, including more than 160 refereed journal publications and 10 book chapters. Over 50 of his patents have been adopted by industry. He is a Fellow of the IEEE (2003) and IET (1996). He has been an Associate Editor of the IEEE Transactions on Power Electronics since 1997 and an Associate Editor of the IEEE Transactions on Industrial Electronics since 2007. He has been appointed twice as an IEEE Distinguished Lecturer by the IEEE Power Electronics Society in 2004 and 2006. He served as one of the 18 Administrative Committee members of the IEEE Power Electronics Society and was the Chairman of its Constitution and Bylaws Committee from 2002-2010. He received the Excellent Teaching Award at CityU in 1998 and the Earth Champion Award in 2008. He won an IEEE Best Paper Award from the IEEE IAS Committee on Production and Applications of Light in 2002, and two IEEE Power Electronics Transactions Prize Paper Awards for his publications on Wireless Battery Charging Platform Technology in 2009 and on LED system theory in 2010. His inventions on wireless charging platform technology underpin key dimensions of Qi, the world's first wireless power standard, with freedom of positioning and localized charging features for wireless charging of consumer electronics.

In Nov. 2010, he received the IEEE Rudolf Chope R&D Award from the IEEE Industrial Electronics Society, the IET Achievement Medal (The Crompton Medal) and was elected to the Fellowship of the Australian Academy of Technological Sciences & Engineering.

(2012)

• Zhong W., Ho W.C., Liu X. and Hui S.Y.R., “Using Self-driven Synchronous Rectifier for Power Applications as a Direct Low-Loss Replacement of Diode Bridge”, IEEE Transactions on Industrial Electronics , Volume: 59 , Issue: 1, 2012, Page(s): 392 - 401
  
  
• Ng W.M., Lin D.Y. and Hui S.Y.R., “Design of A Single Ultra-Low-Loss Magnetic Ballast Design for a Wide Range of T5 High-Efficiency Fluorescent Lamps”, IEEE Transactions on Industrial Electronics, Vol. 59, No. 4, April 2012, 1849-1858
  
  
• Tao X. H and Hui S.Y.R., “Dynamic Photo-Electro-Thermal Theory for LED Systems” IEEE Transactions on Industrial Electronics, Volume: 59 , Issue: 4: 2012, Page(s): 1751 - 1759
  
  
• Lin D.Y., Yan W. and Hui S.Y.R., “Modelling the Warm-up Phase of the Starting Processes of High-Intensity-Discharge (HID) Lamps”, IET Journal on Sciences, Technology & Measurements, volume: 5 , Issue: 6, 2011 , Page(s): 199 - 205
  
  
• Li S.N, Zhong W.Z., Chen W. and Hui S.Y.R., “Novel Self-configurable Current Mirror Techniques for Reducing Current Imbalance in Parallel Light-Emitting Diode (LED) strings”, IEEE Transactions on Power Electronics , Volume: 27 , Issue: 4, 2012 , Page(s): 2153 - 2162
  
  
• Lee C.K., Zhong W.X. and Hui S.Y.R., “Effects of Magnetic Coupling of Non-adjacent Resonators on Wireless Power Domino-Resonator Systems”, IEEE Transactions on Power Electronics , Volume: 27 , Issue: 4, 2012 , Page(s): 1905 - 1916
  
  
• Chen W. and Hui S.Y.R., “Elimination of Electrolytic Capacitor in an AC/DC Light-Emitting Diode (LED) Driver with High Input Power Factor and Constant Output Current”, IEEE Transactions on Power Electronics , Volume: 27 , Issue: 3, 2012 , Page(s): 1598 - 1607
  
  
• Tao X. H., Chen H.T. and Hui S.Y.R., “A New Non-Contact Measurement Method for Predicting Both Internal Junction Temperature and Thermal Resistance in LED systems”, IEEE Transactions on Power Electronics , Volume: 27 , Issue: 4, 2012 , Page(s): 2184 - 2192
  
  
• Zhong W.X., Lee C.K. and Hui S.Y.R., “Wireless Power Domino-Resonator Systems with Non-coaxial axes and Circular Structures”, IEEE Transactions on Power Electronics Volume: 27 , Issue: 11, 2012 , Page(s): 4750 – 4762
  
  
• Chen H.T., Tao X.H. and Hui S.Y.R., “Estimation of Optical Power and Heat Dissipation Coefficient for the Photo-Electro-Thermal Theory for LED Systems”, IEEE Transactions on Power Electronics , Volume: 27 , Issue: 4, 2012 , Page(s): 2176 - 2183
  
  
• Hui S.Y.R., Chen Huanting and Tao Xuehui, “An Extended Photo-Electro-Thermal Theory for LED Systems: A Tutorial from Device Characteristic to System Design for General Lighting”, IEEE Transactions on Power Electronics [Invited Paper] Vol. 27, Nov. 2012, pp: 4571-4583
  
  
• Zhong W.X., Lee C.K. and Hui S.Y.R., "General Analysis on the Use of Tesla's Resonators in Domino Forms for Wireless Power Transfer", IEEE Transactions on Industrial Electronics, Vol.60, No.1, January 2013, pp: 261-270
  
  
• Lin D.Y., Yan W., Zissis G. and Hui S.Y.R., "Methodology for developing a low-pressure discharge lamp model with electron density variation and ambipolar diffusion', IET Science, Technology & Measurements (in press)
  
  
• Hui S.Y.R., Lee C.K. and Wu F.F., "Electric Springs: A New Smart Grid Technology", IEEE Transactions on Smart Grid Vol.3, No.3, Sept. 2012, pp: 1552-1561.
  
  (2011)
  
  
• Hui S.Y.R., Lin D.Y. Ng W.M, and Yan W., "A 'Class A2' Ultra-Low-Loss Magnetic Ballasts for T5 Lamps A New Trend for Sustainable Lighting Technology", IEEE Transactions on Power Electronics, Volume 20, Issue 2, February 2011, Page(s): 622 - 629
  
  
• Rongxiang Wu; Sin, J.K.O.; Hui, S.Y.; "Novel Silicon-Embedded Coreless Transformer for On-Chip Isolated Signal Transfer",  IEEE Magnetics Letters, Volume: 2, April 2011, Page(s): 6500103
  
  
• Chen W., and Hui S.Y.R., "A Dimmable Light-Emitting Diode (LED) Driver with Mag-amp Postregulators for Multistring Applications", IEEE Transactions on Power Electronics , Vol.26, Issue: 6, June 2011, Page(s): 1714 - 1722
  
  
• Zhong W.X., Ho W.C. and Hui S.Y.R., "Generalized Self-Driven AC-DC Synchronous Rectification Techniques for Single- & Multi-Phase Systems", IEEE Transactions on Industrial Electronics,  Volume: 58 , Issue: 8, August 2011 , Page(s): 3287 - 3297
  
  
• Lee C.K. and Hui S.Y.R., "A Design Methodology for Smart LED Lighting Systems Driven by Weakly-regulated Power Grids", IEEE Transactions on Smart Grid, Vol.2, No.3, September, 2011 , Page(s): 548 - 554
  
  
• Lin D.Y., Yan W. and Hui S.Y.R., "Modeling of Dimmable Fluorescent Lamp Including the Tube Temperature Effects" IEEE Transactions on Industrial Electronics , Vol.58, No.9, September 2011 , Page(s): 4145 - 4152
  
  
• Zhong W., Liu X. and Hui S.Y.R., "A Novel Single-Layer Winding Array and Receiver Coil Structure for Contactless Battery Charging Systems With Free-Positioning and Localized Charging Features",  IEEE Transactions on Industrial Electronics, Vol.58, No.9, September 2011, Page(s): 4136 - 4144
  
  
• Lee C.K., Su Y.P. and Hui S.Y.R., "Printed Spiral Winding Inductor with Wide Frequency Bandwidth", IEEE Transactions on Power Electronics Volume: 26 , Issue: 10, 2011 , Page(s): 2936 - 2945
  
  

(Pre-2011 –selected publications)

• Tang, S.C.; Hui, S.Y.; Henry Shu-Hung Chung, ‘Coreless planar printed-circuit-board (PCB) transformers-a fundamental concept for signal and energy transfer’, IEEE Transactions on Power Electronics, Volume: 15 Issue: 5, Sept. 2000, Page(s): 931 –941
  
  
• Hui, S.Y.R.; Ho, W.W.C.; “A new generation of universal contactless battery charging platform for portable Consumer Electronic equipment”, IEEE Transactions on Power Electronics, Volume 20,  Issue 3,  May 2005 Page(s):620 – 627
  
  
• Liu X., Ho W.C. and Hui S.Y.R., “Localized Charging, Load Identification and Bi-Directional Communication Methods for a Planar Inductive Battery Charging System”, US patent 7,915,858, 29 March, 2011
  
  
• Hui S.Y.R., “Inductive battery charger system with primary transformer windings formed in a multi-layer structure”, US patent  7,164,255,  January 16, 2007 
• Hui S.Y.R., “Planar inductive battery charging system”, US patent 7,576,514, August 18, 2009
  
  
• Liu X. and Hui S.Y.R., “”Optimal Design of a Hybrid Winding Structure for planar battery charging platform”, IEEE Transactions on Power Electronics Volume 23,  Issue 1,  Jan. 2008 Page(s):455 - 463 [IEEE PELS Transactions Prize Paper Award - 2009]
  
  
• Ho, Y.K.; Chung, H.; Lee, S.; Hui, S.Y.R., ‘A comparative study on dimming control methods for electronic ballasts’, IEEE Transactions on Power Electronics, Volume: 16 Issue:6, Nov 2001, Page(s): 828 –836.
  
  
• Hui S.Y.R, Li S., Chen W. , Tao X.H. and W.M. Ng, “A Novel Passive LED Drivers with Long Lifetime” IEEE Transactions on Power Electronics  Volume: 25 , Issue: 10, 2010 , Page(s): 2665 - 2672
  
  
• Wei Yan; Hui, S.Y.R.; “A universal PSpice model for HID lamps”, IEEE Transactions on Industry Applications, Volume 41,  Issue 6,  Nov.-Dec. 2005 Page(s):1594 – 1602 [IEEE IAS Best Paper Award]
  
  
• Hui S.Y.R. and Qin Y.X., “A General Photo-Electro-Thermal Theory for Light Emitting Diode (LED) Systems”, IEEE Transactions on Power Electronics Volume 24,  Issue 8,  Aug. 2009 Page(s):1967 – 1976  [IEEE PELS Transactions Prize Paper Award – 2010]

[updated on Sept 2012]