A 3-phase 450-V, 6-pole, 60 Hz Y-connected slip ring induction motor is driving at constant torque of 80 N.m. The parameters of the motor are: R₁=0.5 2, R'₂ 0.2 02, Xeq=492, N₂/N₁-0.3 a) Compute the starting current and the starting torque when no voltage is injected in the rotor circuit. b) Compute the starting current and the starting torque when 7.5 V is injected in the rotor circuit. c) What is the major complication involved in the voltage injection method?

A 3-phase 450-V, 6-pole, 60 Hz Y-connected slip ring induction motor is driving at constant torque of 80 N.m. The parameters of the motor are: R₁=0.5 2, R'₂ 0.2 02, Xeq=492, N₂/N₁-0.3 a) Compute the starting current and the starting torque when no voltage is injected in the rotor circuit. b) Compute the starting current and the starting torque when 7.5 V is injected in the rotor circuit. c) What is the major complication involved in the voltage injection method?

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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