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Three phase induction motors run at constant speed from zero to full load, which can stabilize the movement at the interface of the application. (a) How can the induction motor runs with a constant speed from zero to full load? Explain this behavior using its torque-speed curve. (b) A 460V, 4-pole, 75-hp, 60 Hz, Y-connected, three phase induction motor has full-load torque at 3.5% slip when operating at the rated condition. The per-phase circuit model impedances of the motor are: R = 0.0580 Хм — 180 х,%3D0.320 Х, 3 0.3860 All losses maybe neglected in this problem. (i) Compute the voltage and impedance for the Thevenin equivalent circuit for this motor. (ii) How much torque is induced in this motor when operating at the rated condition? (iii) What is the value of rotor resistance, R2? (iv) What is the slip and the corresponding rotor speed at the pullout torque of the motor?

Three phase induction motors run at constant speed from zero to full load, which can stabilize the movement at the interface of the application. (a) How can the induction motor runs with a constant speed from zero to full load? Explain this behavior using its torque-speed curve. (b) A 460V, 4-pole, 75-hp, 60 Hz, Y-connected, three phase induction motor has full-load torque at 3.5% slip when operating at the rated condition. The per-phase circuit model impedances of the motor are: R = 0.0580 Хм — 180 х,%3D0.320 Х, 3 0.3860 All losses maybe neglected in this problem. (i) Compute the voltage and impedance for the Thevenin equivalent circuit for this motor. (ii) How much torque is induced in this motor when operating at the rated condition? (iii) What is the value of rotor resistance, R2? (iv) What is the slip and the corresponding rotor speed at the pullout torque of the motor?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Three phase induction motors run at constant speed from zero to full load, which can stabilize the movement at the interface of the application. (a) How can the induction motor runs with a constant speed from zero to full load? Explain this behavior using its torque-speed curve. (b) A 460V, 4-pole, 75-hp, 60 Hz, Y-connected, three phase induction motor has full-load torque at 3.5% slip when operating at the rated condition. The per-phase circuit model impedances of the motor are: R1 = 0.0580 XM = 180 X, = 0.320 X, = 0.386N All losses maybe neglected in this problem. (i) Compute the voltage and impedance for the Thevenin equivalent cireuit for this motor. (ii) How much torque is induced in this motor when operating at the rated condition? (ii) What is the value of rotor resistance, R2? (iv) What is the slip and the corresponding rotor speed at the pullout torque of the motor?
Transcribed Image Text:Three phase induction motors run at constant speed from zero to full load, which can stabilize the movement at the interface of the application. (a) How can the induction motor runs with a constant speed from zero to full load? Explain this behavior using its torque-speed curve. (b) A 460V, 4-pole, 75-hp, 60 Hz, Y-connected, three phase induction motor has full-load torque at 3.5% slip when operating at the rated condition. The per-phase circuit model impedances of the motor are: R1 = 0.0580 XM = 180 X, = 0.320 X, = 0.386N All losses maybe neglected in this problem. (i) Compute the voltage and impedance for the Thevenin equivalent cireuit for this motor. (ii) How much torque is induced in this motor when operating at the rated condition? (ii) What is the value of rotor resistance, R2? (iv) What is the slip and the corresponding rotor speed at the pullout torque of the motor?
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