Example synchronous reactance of 0 + j20 2 per phase. A 500 kVA, 3-phase, 6.6 kV, star-connected sy (a) For a load angle of 10°, the motor takes rated current. Find the excitation emfs both at lagging and leading pfs. (b) Find the mechanical power developed and pf in part (a). (c) Find the minimum excitation voltage for delivering 200 kW at rated voltage without falling out of step.

Example synchronous reactance of 0 + j20 2 per phase. A 500 kVA, 3-phase, 6.6 kV, star-connected sy (a) For a load angle of 10°, the motor takes rated current. Find the excitation emfs both at lagging and leading pfs. (b) Find the mechanical power developed and pf in part (a). (c) Find the minimum excitation voltage for delivering 200 kW at rated voltage without falling out of step.

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

Chapter6: Power Flows

Section: Chapter Questions

Problem 6.47P

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