Question: A 3 7 0 V , 9 8 hp , 1 5 5 Hz , 1 8 pole, Y connected induction motor has the following
A VhpHz pole, Y connected induction motor has the following impedances, in ohms, per phase and referred to the stator side. The motor is operating with a slip of NB For this problem, consider the core losses lumped to the rotational losses. Also, the rotational and core losses are for the entire motor.Induction machine parameters referred to stator sidea What is the line current, IL b What are the stator copper losses, PSCL c What is the air gap power, PAG? d What is the power converted from electrical to mechanical form, PCONV? e What is the induced torque, Tind? f What is the load torque, TLOAD? g What is the overall machine efficiency? h What is the machine speed, in rps rpm and rads i What is the slip at the pullout torque? j What is the pullout torque? k How much additional resistance referred to the stator circuit would it be necessary to add to the rotor circuit to make the maximum torque occur at starting conditions when the shaft is not moving Plot the torque versus speed characteristic of the motor with the additional resistance inserted.a Line Current Ab Stator Copper losses Wc Airgap power Wd Converted power We Induced Torque Nmf Load Torque Nmg Efficiencyh Speed rps rpm radsi Pullout slipj Pullout Toeque Nmk Additional Resistance Ohm
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