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THEORETICAL AND EXPERIMENTAL INVESTIGATIONS ON HIGHLY STABLE RELUCTANCE MOTORS

Date

1983

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Degree Level

Masters

Abstract

The advent of modern solid-state power supplies has enhanced the use of electrical motors for variable speed systems. Variable speed synchronous drives are used for a variety of applications. Reluctance motors, in particular, are becoming increasingly popular invariable speed synchronous drives for simple domestic applications as well as for sophisticated industrial applications. In this thesis, a rigorous, but simple analysis is presented to illustrate the effect of the distribution of the rotor bars on the asynchronous performance of the conventional reluctance machines. The analysis enables a design engineer to obtain the most suitable arrangement of the rotor bars at the design stage. These arrangements are characterized by the outstanding features of the minimum amplitude of the pulsating torque and smooth torque-slip characteristics. The skin-effect in the rotor bars has been considered in the investigations. In order to examine the validity of the method of analysis, extensive experimental investigations were carried out on specially designed reluctance motors supplied from a variable frequency power supply. The studies were conducted for different operating conditions as well as for three different rotors. Each rotor has a different distribution of the rotor bars. The comparisons made between the experimental and analytical results prove the general validity of the method of analysis.

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Degree

Master of Science (M.Sc.)

Department

Electrical Engineering

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