Problem 2: Question 2. Consider the three phase generator below: Phase A Phase B N Phase C N a) If the stator rotates at 2400 rpm, what is the frequency of the voltage generated? b) If the generator is connected to a balanced, wyc-connected, resistive load as shown below and a phase current of 100 A is required, what is the phase voltage that the generator must supply? What is the minimum power rating (in MVA) the three phase generator can have? ph 1kΩ 1k Q 1k Q ph ph

Problem 2: Question 2. Consider the three phase generator below: Phase A Phase B N Phase C N a) If the stator rotates at 2400 rpm, what is the frequency of the voltage generated? b) If the generator is connected to a balanced, wyc-connected, resistive load as shown below and a phase current of 100 A is required, what is the phase voltage that the generator must supply? What is the minimum power rating (in MVA) the three phase generator can have? ph 1kΩ 1k Q 1k Q ph ph

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

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.16P: A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and...

See similar textbooks

Similar questions

ABB company manufactures three phase, 10 kVA, 240 V, 60Hz, 6 pole wye connected synchronousgenerator. The generator is connected to an infinite bus at rated voltage. The generator has synchronousreactance of 2.0 ohms/phase and negligible stator resistance and is delivering the rated power at 0.9power factor lagging. Determine the following:a. Stator current b. Excitation voltage (per phase and line to line) c. What is the pullout torque (maximum torque) delivered by the generator?
Consider the three phase generator below: a) If the stator rotates at 2400 rpm, what is the frequency of the voltage generated? b) If the generator is connected to a balanced, wye-connected, resistive load as shown below and a phase current of 100 A is required, what is the phase voltage that the generator must supply? What is the minimum power rating (in MVA) the three phase generator can have?
1.) A 6 pole, 75 Hz, 240 V, Y-connected, 3-phase generator has a synchronous reactance of 2 ohms and negligible resistance. The balanced three-phase load draws 220 kVAR at 0.90 lagging pf at 240 V. e. Solve for the voltage regulation. f. What is the current drawn by the load per phase? g. Compute the power developed in the armature per phase. h. At a total of 20kW of losses, what is the efficiency of the alternator?
Qa1. The three phases of a generator can be connected in either delia (D) or wye (Y) connection. List two advantages of three phase system over a single phase system. Also write mathematical relationship between the phase voltage and the ine voltage, and the phase current and the line current for both delia (D) and wye (Y) connections. Please answer in typing format please..
A 1500 kVA, star-connected, 2300 V, 3-phase, salient-pole synchronous generator has reactance Xd= 1.95 ohm and Xq= 1.40 ohm per phase. All losses may be neglected. Find the excitation voltage for operation at rated kVA and power factor of 0.85 lagging.
A 1500 KVA, star connected 2300v, 3 phase salient pole synchronous generator has reactance ph/95.1xd and phase/40.1xq All losses may be neglected. Find the excitation voltage for operation at rated KVA and power factor of 0.85 lagging.
The effective resistance of a 2200 V, 50 Hz, 440 KVA, 1 -phase alternator is 0.5 ohm. On short-circuit, a field current of 40 A gives the full load current of 200 AS. The electromotive force on open-circuits with same field excitation is 1160 V. Then the synchronous impedance and reactance is _______ ohm and _______ ohm respectively.
1- 1-Nose point in the PV Curve of an alternator gives you the information about a.Intersection of load line and generator characteristics b.Characteristics load line c.Maximum Real Power it can deliver d.Good voltage profile
A three-phase Y-connected alternator delivers a unity power-factor load at 220 volts. If the synchronous-reactance voltage drop is 50 volts per phase, neglecting the resistance voltage drop. First Trinal Exan 2. A 3-phase I load at 200 a. calculate the generated voltage b. calculate the percent regulation
A three phase star connected alternator of 1000 KVA, and 4600 volts, has an armature resistance of 2 ohms per phase and an armature synchronous reactance of 20 ohms per phase. Find the voltage generated at full load per phase if : a) Supplies power to a purely resistive load b) If you feed a load with inductive power factor of 0.85 c) If you feed a load with a capacitive power factor of 0.75 d) If you feed a load with capacitive power factor 0.4
Question 3a) The Electricity Company of Ghana (ECG) has noticed two different values of voltagebetween the No-load Voltage and the load Voltage aa the end of one of their distribution feeders. One is 80% and the 4other is 2%. Which of these two values would you recommend to ECG to use and why? b) An Electrical Power Generation Company has engaged you as their consultant for you to advise them on their Synchronous generators. During a peaking load situation which occurred between 5pm to 8pm, the generators experienced transient stability challenges that lead even to some of the generators shutting down. You have been called upon to provide five (5) engineering answers that would cause the problems.
The open circuit and short circuit data of a three-phase, 3300 V, 500 kVA, star connected alternator are as follows : Open circuit test: Field current 9 A, open circuit voltage 470 line value Short circuit test: Field current 9 A, short circuit line current 80 A Resistance of the winding between the two slip rings is 2.3Ω Find the full load voltage regulation at 0.8 lagging power factor and 0.8 leading power factor.