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the motoring induction mạchine at 40 hp. Neglecting the slight change in the generating machine parameters due to oper- ating at a reduced frequency, estimate the rating of the synchronous machine for this duty and the frequency at which it must be run. Line input readings for each machine No load 500 V  8.5 A 1-6 kW Locked rotor  100 V  30 A 1-6 kW Friction and windage loss per machine 0-8 kW. R = R2'

the motoring induction mạchine at 40 hp. Neglecting the slight change in the generating machine parameters due to oper- ating at a reduced frequency, estimate the rating of the synchronous machine for this duty and the frequency at which it must be run. Line input readings for each machine No load 500 V  8.5 A 1-6 kW Locked rotor  100 V  30 A 1-6 kW Friction and windage loss per machine 0-8 kW. R = R2'

Power System Analysis and Design (MindTap Course List)
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter12: Power System Controls
Section: Chapter Questions
Problem 12.4P
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Two identical 3-phase, 500-V induction machines are mechanically coupled for a back-to-back test. One machine is motoring from a 500-V, 50-Hz supply and the other is generating on to a 3-phase, 500-V synchronous machine for which the fre- quency can be controlled. It is required to run the motoring induction mạchine at 40 hp. Neglecting the slight change in the generating machine parameters due to oper- ating at a reduced frequency, estimate the rating of the synchronous machine for this duty and the frequency at which it must be run. Line input readings for each machine

No load 500 V  8.5 A 1-6 kW

Locked rotor  100 V  30 A 1-6 kW

Friction and windage loss per machine 0-8 kW. R = R2'

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