A 480V, 50HZ, star-connected 6 poles synchronous generator has a per phase synchronous reactance of 0.30. Its full load armature current is 60A at 0.85 lagging power factor. This generator has friction and windage losses of 1.5kW, and core losses of 1kW at full load. Assume copper losses are negligible due to negligible armature resistance. Determine the: i) rotational speed of the generator, ii) generated emf voltage of the generator, ii) efficiency of the generator, and iv) voltage regulation.

A 480V, 50HZ, star-connected 6 poles synchronous generator has a per phase synchronous reactance of 0.30. Its full load armature current is 60A at 0.85 lagging power factor. This generator has friction and windage losses of 1.5kW, and core losses of 1kW at full load. Assume copper losses are negligible due to negligible armature resistance. Determine the: i) rotational speed of the generator, ii) generated emf voltage of the generator, ii) efficiency of the generator, and iv) voltage regulation.

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 12.11P

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