A 70 kVA, 440 V, 50Hz, 4 poles, Y-connected three phase synchronous generator has armature resistance of 0.23 2/ph and synchronous reactance of 3.1 2/ph Calculate the following at rated load current with 0.8 power factor lagging: 1- Excitation voltage ? 2- Developed power? 3- Percentage Voltage Regulation? 4- Flux per pole if armature slots = 72 slots and total armature conductors = 720, assuming full pitched windings? 5- The amount of synchronous reactance which represent the effect of armature reaction if the armature leakage flux is 0.001 WB?

A 70 kVA, 440 V, 50Hz, 4 poles, Y-connected three phase synchronous generator has armature resistance of 0.23 2/ph and synchronous reactance of 3.1 2/ph Calculate the following at rated load current with 0.8 power factor lagging: 1- Excitation voltage ? 2- Developed power? 3- Percentage Voltage Regulation? 4- Flux per pole if armature slots = 72 slots and total armature conductors = 720, assuming full pitched windings? 5- The amount of synchronous reactance which represent the effect of armature reaction if the armature leakage flux is 0.001 WB?

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.56P: Three single-phase two-winding transformers, each rated 3kVA,220/110volts,60Hz, with a 0.10 per-unit...

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