High Frequency Magnetics
Gerard Hurley
National University of Ireland Galway
Prof. Hurley received the B.E. degree from University College Cork, the M.S. degree from M.I.T., and the PhD degree from the National University of Ireland, Galway.
He worked in Canada from 1977 to 1983 for Honeywell and Ontario Hydro. He is currently Professor of Electrical Engineering at the National University of Ireland, Galway. Research interests include High Frequency Magnetics, Power Quality, and Renewable Energy systems. He received the Middlebrook Technical Achievement Award for 2013.
Prof. Hurley is a Fellow of the IEEE. He was General Chair and main organiser of the IEEE Power Electronics Specialists Conference in 2000.
Abstract
Power Electronics is the technology that enables the efficient conversion and control of electric energy from the source to the load; this is particularly true for distributed generation of energy such as solar, wind and... [ view full abstract ]
Power Electronics is the technology that enables the efficient conversion and control of electric energy from the source to the load; this is particularly true for distributed generation of energy such as solar, wind and conventional sources.
The seminar begins with the design rules for inductor design and examples of different types of inductors are given, including the inductor in a flyback converter, since it has more than one coil. This is followed by the general design methodology for transformers and many examples from switched mode power supplies and resonant converters are given. General rules are established for optimising the design of windings under various excitation (including non-sinusoidal) and operating conditions. The skin effect and the proximity effect give rise to increased losses in conductors due to the non-uniform distribution of current in the conductors. A new approach to high frequency losses that avoids cumbersome Fourier analysis will be presented to optimise the winding design.
Variable inductors are particularly suited to power factor correction and may be used for maximum power point tracking (MPPT) in solar energy systems. In both cases there is a substantial reduction in the size of the inductor.
Session
Tue-1b » Tutorial, Hurley (09:00 - Tuesday, 24th June, ENG2002)
