published_or_final_version / Electrical and Electronic Engineering / Doctoral / Doctor of Philosophy

M. Tech. Electrical Engineering. / Studies the symmetrical six phase induction machine structure, to determine different devices this machine can adapt to and to model these devices mathematically. Laboratory experiments are to be conducted and used to verify theoretical findings. The research objectives are:to determine what devices the symmetrical structure can adapt to ; to develop a mathematical model of the machine operating as different devices and to determine the equivalent circuit of the specific mode of operation ; to investigate both steady state and dynamic behaviour of the machine operating as different devices using Matlab / Simulink simulation software package ; to use a laboratory prototype of the "3 & 6" machine to validate theoretical findings.

M. Tech. Electrical Engineering. / In the recent past, there has been an increase in demand for high data rate services and system designers are always looking for ways to improve the capacity and quality of service (QoS) of wireless communication networks. The main objective of the study is to propose an asynchronous power allocation scheme based on the classical waterfilling algorithms in a multi-user MIMO uplink system. The proposed algorithm is fully distributed and eliminates the need for user synchronization during power allocation. Each user in the system competes with one another in choosing the capacity maximizing transmit power while treating the multi-user interference as noise. The problem is reduced to finding the optimal transmit covariance matrix of the users that maximizes the sum capacity of the system. We formulate the power allocation problem as a non-cooperative game and show the existence and uniqueness of the Nash Equilibrium (NE) point. The proposed Semi-Asynchronous MIMO Waterfilling algorithm maximizes the system sum capacity without the need for synchronization among users when updating their power allocation.

D. Tech. Electrical Engineering. / Discusses the research needed to improve the performance indices (effective reactance ratio and torque index) of a synchronous reluctance machine with a simple salient rotor, using an electric circuit approach ; dual sator winding and capacitance injection, such that its power factor, torque and torque per ampere are attractive.

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Bibliography : leaves 272-277 / xiii, 277 leaves : ill ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Electrical and Electronic Engineering, 1993

Thesis (M.S.)--Youngstown State University, 2008. / Includes bibliographical references (leaves 107-109). Also available via the World Wide Web in PDF format.