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Global Journal of Pure and Applied Sciences

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An improved modelling of asynchronous machine with skin-effect

OI Okoro

Abstract


The conventional method of analysis of Asynchronous machine fails to give accurate results especially when the machine is operated under high rotor frequency. At high rotor frequency, skin-effect dominates causing the rotor impedance to be frequency dependant. This paper therefore presents an improved method of modelling skin-effect in asynchronous machine under dynamic condition. The computed results are compared with the conventional model. The differences in the comparison underscore the need for the proposed model.

KEY WORDS: Conventional method, Skin-effect, Rotor impedance, Asynchronous machine, Simulation.

Global Jnl of Pure and Applied Sciences Vol.10(4) 2004: 595-605



http://dx.doi.org/10.4314/gjpas.v10i4.16444
AJOL African Journals Online