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Details of Grant 

EPSRC Reference: GR/L36093/01
Title: PROCESSING FACTORS AFFECTING THE PERFORMANCE OF STRIP WOUND MAGNETIC CORES AT MEDIUM TO HIGH FREQUENCY
Principal Investigator: Moses, Professor AJ
Other Investigators:
Ling, Dr P
Researcher Co-Investigators:
Project Partners:
Telmag Magnetic Components Ltd
Department: Sch of Engineering
Organisation: Cardiff University
Scheme: Standard Research (Pre-FEC)
Starts: 01 March 1998 Ends: 31 May 2001 Value (£): 134,179
EPSRC Research Topic Classifications:
Materials Processing
EPSRC Industrial Sector Classifications:
Energy
Related Grants:
Panel History:  
Summary on Grant Application Form
Theoretical modelling using an OPERA3 FEM package will be performed to estimate magnetic flux distribution in a range of toroids, distributed gap-cores and C-cores. The data obtained from the FEM work will be used to predict permeability and power losses of the cores. Accordingly, experimental measurements at various processing stages will be selected based on the FEM findings. The processing stages will include core winding, stress relief annealing, adhesive impregnation and cutting of cores. Magnetic search coils and thermistors will be planted at strategic locations on each core to sense the planar longitudinal flux and interturn flux. Voltages induced by the search coils will be measured and processed to provide 3D flux distribution contours in the wound cores and localised specific power loss will be measured using rate of rise of temperature technique. Technique of using copper foil to control interturn flux will be devised and its applications in inductors will be evaluated. The core prediction software developed previously for 50Hz will be extended and magnetic performance data of wound core from 50Hz to 1MHz will be incorporated. The extended CAD package will apply a Neural Network technique to carry out data selection criteria and statistical analysis.
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Organisation Website: http://www.cf.ac.uk