Unformatted text preview: currents of a 4 pole machine are given by ) 200 cos( 50 ) 200 sin( 50 t i t i bs as − = = The speed of the machine is 500 rpm in the CW direction. What is the physical speed and direction of the stator MMF as viewed from the rotor. Problem 46 – Phase Inductance Suppose the winding function of aphase of the stator is given by ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ = sm s as P N P w 2 cos 2 and the winding function of the bphase of the rotor is given by ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ = rm r br P N P w 2 sin 2 Express the mutual inductance between the aphase stator and bphase rotor windings in terms of s N , r N , P , the rotor radius r , the rotor length L , the airgap g , the permeability of free space μ and electrical rotor position r θ ....
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 Spring '08
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 Inductance, Frequency, Inductor, Electric motor

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