Sunday, 7 July 2013

Developed view of a squirrel-cage induction machine


Reaction of a squirrel-cage rotor in a 2-pole field in the rotor reference frame: The sinusoidally distributed flux density wave is moving at slip speed inducing in the rotor cage voltages of magnitude indicated by the blue vertical lines. Due to the leakage inductance, the resulting bar currents are delayed as represented by the red lines. The corresponding rotor-mmf is shown in the cyan-colored step wave together with its fundamental component.

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