A 3-phase, 4-pol, 50-Hz induction motor has a star-connected rotor. The voltage of each rotor phase at standstill and on open-circuit is 121 V. The rotor resistance per phase is 0.3 Ω and the reactance at standstill is 0.8 Ω. If the rotor current is 15A, calculate the speed at which the motor is running. Also, Calculate the speed at which the torque is a maximum and the corresponding value of the input power to the motor, assuming the flux to remain constant.
A 3-phase, 4-pol, 50-Hz induction motor has a star-connected rotor. The voltage of each rotor phase at standstill and on open-circuit is 121 V. The rotor resistance per phase is 0.3 Ω and the reactance at standstill is 0.8 Ω. If the rotor current is 15A, calculate the speed at which the motor is running. Also, Calculate the speed at which the torque is a maximum and the corresponding value of the input power to the motor, assuming the flux to remain constant.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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A 3-phase, 4-pol, 50-Hz induction motor has a star-connected rotor. The voltage of each rotor phase at standstill and on open-circuit is 121 V. The rotor resistance per phase is 0.3 Ω and the reactance at standstill is 0.8 Ω. If the rotor current is 15A, calculate the speed at which the motor is running. Also, Calculate the speed at which the torque is a maximum and the corresponding value of the input power to the motor, assuming the flux to remain constant.
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