Rafik Hariri philanthropic and developmental contributions are countless. The most remarkable being the multifaceted support to educate more than 36,000 Lebanese university students within Lebanon, and beyond.
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COMPUTER AIDED ANALYSIS, MODELLING AND EXPERIMENTAL ASSESSMENT OF PERMANENT MAGNET SYNCHRONOUS MACHINES WITH RARE EARTH MAGNETS
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Farid B. CHABAAN
|
Univ. |
University of Liverpool |
Spec. |
Electrical and Electronics Engineering |
Deg. |
Year |
# Pages |
|
Ph.D. |
1989 |
141 |
The work presented in this thesis concentrates on the computer aided analysis, modelling, and experimental assessment of permanent magnet synchronous machines which utilise a newly developed high- energy neodymium iron boron magnet for their field excitation.
This work can be divided into two main parts. In the first part trends and development of CAD techniques are highlighted and computer packages used in the work are briefly described. Properties and characteristics of the new neodymium magnets relative to the other available types are investigated.
In order to assess the advantages of these magnets, the performance of a high- field machine using ferrites, samarium cobalt, and neodymium magnets are compared. In addition a prototype machine with skewed magnets and canned rotor is described.
The second part considers an accurate equivalent circuit model for a rare earth permanent magnet machine. For this purpose the equivalent circuit parameters such as leakage and synchronous reactance, winding resistance, and core loss are determined using both computational and experimental methods. The proposed model is shown to give a good prediction of the machine performance. The sensitivity of each of the machine parameters on the model accuracy is also tested.
