Example 1: A 3-phase, 5kVA, 208V (line-to-line) 4-pole 60Hz (star-connected) synchronous machine has negligible stator winding resistance and a synchronous reactance of 80 per phase at rated terminal voltage. Determine the excitation voltage and the power angle when the machine is delivering rated kVA at 0.8 PF lagging. Draw the phasor diagram. + ● Ef + X₂ Ia V₁ = 120V S = √√3 V₁₂₁₂₁1₂₁ + V₁ d V₁ Ef IaRa IajXs

Example 1: A 3-phase, 5kVA, 208V (line-to-line) 4-pole 60Hz (star-connected) synchronous machine has negligible stator winding resistance and a synchronous reactance of 80 per phase at rated terminal voltage. Determine the excitation voltage and the power angle when the machine is delivering rated kVA at 0.8 PF lagging. Draw the phasor diagram. + ● Ef + X₂ Ia V₁ = 120V S = √√3 V₁₂₁₂₁1₂₁ + V₁ d V₁ Ef IaRa IajXs

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

Chapter11: Transient Stability

Section: Chapter Questions

Problem 11.20P

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