The equivalent circuit per-phase parameters for a 220 V, 50 Hz, three-phase, star-connected, 4-pole, induction motor is: R1 0.22 0, R2' = 0.15 0. The inductor motor has a slip of 4% and the full load current has a magnitude of 61 A. The mechanical losses (windage and friction) and the iron losses are 610 W are 420 W respectively. The input power is 36300 W. Determine the following when the motor operates at full load at rated speed: A. the synchronous speed RPM B. the rotor speed in RPM C. the efficiency of the motor in percentage D. the output torque in N-m for a slip of 8%.

The equivalent circuit per-phase parameters for a 220 V, 50 Hz, three-phase, star-connected, 4-pole, induction motor is: R1 0.22 0, R2' = 0.15 0. The inductor motor has a slip of 4% and the full load current has a magnitude of 61 A. The mechanical losses (windage and friction) and the iron losses are 610 W are 420 W respectively. The input power is 36300 W. Determine the following when the motor operates at full load at rated speed: A. the synchronous speed RPM B. the rotor speed in RPM C. the efficiency of the motor in percentage D. the output torque in N-m for a slip of 8%.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter39: Synchronous Motor Operation

Section: Chapter Questions

Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...

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