Space harmonics in unified electrical-machine theory

1 January 1971

journal article
Published by Institution of Engineering and Technology (IET) in Proceedings of the Institution of Electrical Engineers

Vol. 118 (10) , 1408-1412
https://doi.org/10.1049/piee.1971.0264

Abstract

The paper deals with the applicability of unified machine theory to electrical machines where space harmonics can not be neglected. It is shown that there exists cases where a linear transformation can de determined to transform the set of time-depended linear differential equations for a machine at constant speed into a set of linear time-invariant differential equations, even if space harmonics are taken into considertation. A criterion for applicability is presented that involves the number of phases, the number of harmonics and the order of the harmonics that have to be considered.

Keywords

ELECTRICAL MACHINES
CONSTANT SPEED
NUMBER OF HARMONICS
TIME INVARIANT EQUATIONS
SPACE HARMONICS
LINEAR TRANSFORMATION
ORDER OF HARMONICS
TIME DEPENDENT EQUATIONS
APPLICABILITY OF UNIFIED MACHINE THEORY
LINEAR DIFFERENTIAL EQUATIONS
CRITERION
NUMBER OF PHASES

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