Title :
Segmental-rotor linear reluctance motors with large airgaps
Author :
Edwards, J.D. ; El-Antabl, A.M.
Author_Institution :
University of Sussex, School of Engineering and Applied Sciences, Brighton, UK
fDate :
3/1/1978 12:00:00 AM
Abstract :
A semi-analytical theory for segmental-rotor linear reluctance motors is developed and confirmed by experiment. Approximate expressions for the airgap field components are obtained in closed form, with two coefficients which may be determined by numerical solution of the field equations; values of these coefficients are given for a range of segment shapes and airgap lengths. Expressions are derived for the normal and tractive forces, power factor and efficiency; a goodness factor is defined, and the effects of scale on machine performance are considered.
Keywords :
linear motors; machine theory; magnetic circuits; power factor; reluctance motors; rotors; airgap field components; efficiency; goodness factor; large airgaps; machine performance; numerical solution; power factor; scale; segmental rotor linear reluctance motors; tractive forces;
Journal_Title :
Electrical Engineers, Proceedings of the Institution of
DOI :
10.1049/piee.1978.0054
