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3 phase motor winding3/30/2024 Windings are made up of several coils wound from insulated copper or in some cases aluminium wire. It is the MMF, combined with the motor magnetic circuit design, which gives rise to a travelling wave of flux in the airgap to produce the required motor torque. This MMF is produced when a balanced set of 3 phase AC currents flow in the phase windings. The objective of the distributed winding is to produce a sinusoidal Magneto-Motive Force (MMF) distribution in the motor airgap. The discussion which follows is equally applicable to the use of this type of winding in induction motors or in permanent magnet synchronous motors. However 3-phase distributed windings are the most commonly used in AC motors for industrial applications, which will be the focus of this article. Motor windings can take many shapes or forms.
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