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Possibility of Increasing Efficiency of Induction Machines by Means of Combined Stator Winding
Schreier, Luděk ; Bendl, Jiří ; Chomát, Miroslav
The paper analyses two basic variants of the combined connection of the stator winding of an induction machine. The aim of the use combined winding is to suppress the selected groups of higher spatial harmonics of the current layer and induction in the air gap and the flux in the yoke and thus lower the losses and improve the efficiency. There are given differential equations for both the variants.On the basis of a numerical solution of these equations, the ability of the two variants to suppress higher harmonics has been shown. The validity of the equations has been verified by experimental measurement on a physical model of an induction machine with the stator combined winding.

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