A three-phase, 460-V, 60-Hz, six-pole Y-connected induction motor has Rs = 0.32 Ω, R′ r =...

A three-phase, 460-V, 60-Hz, six-pole Y-connected induction motor has Rs = 0.32 Ω, R′ r = 0.18 Ω, Xs = 1.04 Ω, X′ r = 1.6 Ω, and Xm = 18.8 Ω. The no-load loss, Pno load, is negligible. The load torque, which is proportional to speed squared, is 180 N#m at 1180 rpm. If the motor speed is 850 rpm, determine (a) the load torque demand TL; (b) the rotor current I′ r; (c) the stator supply voltage Va; (d) the motor input current Ii ; (e) the motor input power Pi; (f) the slip for maximum current sa; (g) the maximum rotor current Ir1max2; (h) the speed at maximum rotor current ωa; and (i) the torque at the maximum current Ta.

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Manojponduru answered 10 months ago

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