Question 4.A 3-phase, 8-pole, 50 Hz, 400 Vrms (line-to-line) Y-connected synchronousmachine has 10 per phase synchronous reactance and 0.5 § stator winding resistance per phase.The machine is connected to an infinite bus (ideal voltage source V₁ = 400 V), and is deliveringVt10 kW, 0.75 power factor (PF) leading.(a) Determine the excitation voltage, power angle and the torque for this condition.(b) Draw the phasor diagram.(c) Suppose the field current is now adjusted to achieve unity power factor with the same inputpower at the terminal. Determine the new power angle to achieve this condition.

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Answered: Question 4. A 3-phase, 8-pole, 50 Hz,…

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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