Abstract
For three-phase induction machines supplied by sinusoidal current, it is usual to model the n-bar squirrel-cage by an equivalent two-phase circuit. For a multiphase induction machine which can be supplied with different harmonics of current, the reduced-order model of the rotor must be more carefully chosen in order to predict the pulsations of torque. The proposed analysis allows to avoid a wrong design with non-sinusoidal magnetomotive forces. An analytical approach is proposed and confirmed by Finite-Element modelling at first for a three-phase induction machine and secondly for a five-phase induction machine.
Highlights
In electromechanical energy conversion, the three-phase induction machines are the most used.The rules and methods of the design of this kind of machines have been widely investigated in [1] and [2].The mathematical modeling of induction machines is characterized by the complexity of the squirrel cage rotor
Every α-β stator plane can be excited by a stator sequence, usually several current harmonics are injected to improve torque production in multiphase machines, these injected harmonics belong to independent sets, so they excite different α-β stator planes
Pulsations due to slotting effect. This arithmetic tool is validated on two different multiphase induction machines topologies
Summary
A.S.;0 Gadoue, S.M.; 30M.I.;0Wiliams, B.W. 0flux distribution harmonic injection for a multiphase induction machine using genetic algorithms.
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