P5) A 3 phase, 10 MVA, 2300V, 60HZ synchronous machine has X, =0.9 pu andnegligible stator resistance. The machine is connected to an infinite bus. If VT= 2300V and Ef = 3450 at an angle of 20 degrees:a) Is the machine a generator or a motorb) Determine the power transfer and power factor of the machine

Given: syn. Reactance is 0.9 p.u and terminal voltage is 2300v ,and excitation emf is 3450v and load…

Answered: P5) A 3 phase, 10 MVA, 2300V, 60HZ…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Differentiate the types of commulative compound dc generator. Explain how the DC Generator building out voltages.
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) A four-pole synchronous generator is spinning at a mechanical speed of 1500 r/min. What is the electrical frequency generated by the machine?
With the aid of diagrams describe the basic topology of a wound field 3 phase synchronous generator and outline the relationship between the excitation voltage and rotor current. Q2 (a) (b) Outline with the aid of a suitable diagram the necessary power conversion stages required to interface a small permanent magnet (PM) generator to a stand alone DC system. A star connected 3 phase wound field synchronous generator with a synchronous reactance of 20 N is connected to a 6.6 kV (phase voltage) grid and supplies 1.5 MW at 0.95 lagging power factor at its terminals. Calculate the phase current and resultant voltage across the synchronous reactance (Vxs), and from a scaled phasor diagram graphically determine the required excitation voltage (Eph) and load angle (8). (c) The load is now increased to 3 MW with the Excitation Voltage kept constant. Using the phasor diagram drawn in part (c) graphically determine the resultant phase current, power factor and load angle. (d)
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