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Abstract

The thesis is concerned with the study of the performance of the linear induction motor, and its electromechanical stiffnesses and dampings. “The three axis forces, magnetic flux density, roll, pitch and yaw couples are estimated under different stator symmetrical and asymmetrical positions, and the corresponding flux density and force distributions are plotted.

The three axis forces and the three rotational couples generated by the machine, in six different degrees of freedom, are related to the mechanical vibration system, and represented by the equivalent mechanical springs and damping devices, hence the electromechanical stiffness and damping coefficients are derived.

In order to verify the validity of the theoretical work, an experimental machine is designed and built, Both theoretical and experimental results are shown for comparison purpose.

In the theoretical analysis, a three-dimensional, analytical approach is used, The field quantities are obtained by solving the field equations using the method of separation of variables, In the mathematical model, a constant-current source is assumed and represented by a thin currant sheet. The terminal voltage of the stator is then determined in order to relate the constant-current drive to a constant-voltage drive machine. The forces generated by the secondary conductor are evaluated by using the Maxwell's second stress tensor.

Publication Type:	Thesis (Doctoral)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments:	School of Science & Technology > Department of Engineering School of Science & Technology > School of Science & Technology Doctoral Theses Doctoral Theses

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