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A salient pole synchronous generator has Xd of 0.90 PU and Xq of 0.6 PU. The armature resistance is negligible and generator delivers rated KVA at unity P.F and rated terminal voltage. What is the value of excitation voltage?
Correct answer is between '1.3,1.35'. Can you explain this answer?
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Verified Answer
A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU....
Generated voltage of salient pole synchronous generator
Direct component of current
Id = Ia sin 30.96 = 0.5145 PU
∴ |EF| = 1.17 + .5145 × 0.3 = 1.324 PU
Direct component of current
Id = Ia sin 30.96 = 0.5145 PU
∴ |EF| = 1.17 + .5145 × 0.3 = 1.324 PU
Most Upvoted Answer
A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU....
Calculation of Excitation Voltage for Salient Pole Synchronous Generator
Given Parameters:
Xd = 0.90 PU
Xq = 0.6 PU
Armature Resistance = Negligible
Rated KVA = Unity Power Factor
Rated Terminal Voltage
Step 1: Calculation of Synchronous Reactance
Xs = sqrt(XdXq)
Xs = sqrt(0.9 x 0.6)
Xs = 0.74 PU
Step 2: Calculation of Field Voltage
E = V + IaXs
At unity power factor, Ia = S/V
Ia = Rated KVA/Rated Terminal Voltage
Ia = 1 (Assuming Rated KVA = Rated Terminal Voltage)
E = Rated Terminal Voltage + 1 x 0.74
E = 1.74 PU
Step 3: Conversion of PU to Actual Value
Actual Voltage = E x Base Voltage
Assuming Base Voltage = Rated Terminal Voltage
Actual Voltage = 1.74 x Rated Terminal Voltage
Actual Voltage = 1.74 x 1000 V (Assuming Rated Terminal Voltage = 1000 V)
Actual Voltage = 1740 V
Therefore, the excitation voltage for the given salient pole synchronous generator is 1.74 PU or 1740 V. As per the given answer choices, the correct answer lies between 1.3 and 1.35, which is incorrect. It is possible that there was a mistake in the calculation or the answer choices were incorrectly provided.
Given Parameters:
Xd = 0.90 PU
Xq = 0.6 PU
Armature Resistance = Negligible
Rated KVA = Unity Power Factor
Rated Terminal Voltage
Step 1: Calculation of Synchronous Reactance
Xs = sqrt(XdXq)
Xs = sqrt(0.9 x 0.6)
Xs = 0.74 PU
Step 2: Calculation of Field Voltage
E = V + IaXs
At unity power factor, Ia = S/V
Ia = Rated KVA/Rated Terminal Voltage
Ia = 1 (Assuming Rated KVA = Rated Terminal Voltage)
E = Rated Terminal Voltage + 1 x 0.74
E = 1.74 PU
Step 3: Conversion of PU to Actual Value
Actual Voltage = E x Base Voltage
Assuming Base Voltage = Rated Terminal Voltage
Actual Voltage = 1.74 x Rated Terminal Voltage
Actual Voltage = 1.74 x 1000 V (Assuming Rated Terminal Voltage = 1000 V)
Actual Voltage = 1740 V
Therefore, the excitation voltage for the given salient pole synchronous generator is 1.74 PU or 1740 V. As per the given answer choices, the correct answer lies between 1.3 and 1.35, which is incorrect. It is possible that there was a mistake in the calculation or the answer choices were incorrectly provided.
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A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU. The armature resistance is negligible and generator delivers rated KVA at unity P.F and rated terminal voltage. What is the value of excitation voltage?Correct answer is between '1.3,1.35'. Can you explain this answer?
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A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU. The armature resistance is negligible and generator delivers rated KVA at unity P.F and rated terminal voltage. What is the value of excitation voltage?Correct answer is between '1.3,1.35'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU. The armature resistance is negligible and generator delivers rated KVA at unity P.F and rated terminal voltage. What is the value of excitation voltage?Correct answer is between '1.3,1.35'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU. The armature resistance is negligible and generator delivers rated KVA at unity P.F and rated terminal voltage. What is the value of excitation voltage?Correct answer is between '1.3,1.35'. Can you explain this answer?.
A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU. The armature resistance is negligible and generator delivers rated KVA at unity P.F and rated terminal voltage. What is the value of excitation voltage?Correct answer is between '1.3,1.35'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU. The armature resistance is negligible and generator delivers rated KVA at unity P.F and rated terminal voltage. What is the value of excitation voltage?Correct answer is between '1.3,1.35'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU. The armature resistance is negligible and generator delivers rated KVA at unity P.F and rated terminal voltage. What is the value of excitation voltage?Correct answer is between '1.3,1.35'. Can you explain this answer?.
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A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU. The armature resistance is negligible and generator delivers rated KVA at unity P.F and rated terminal voltage. What is the value of excitation voltage?Correct answer is between '1.3,1.35'. Can you explain this answer?, a detailed solution for A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU. The armature resistance is negligible and generator delivers rated KVA at unity P.F and rated terminal voltage. What is the value of excitation voltage?Correct answer is between '1.3,1.35'. Can you explain this answer? has been provided alongside types of A salient pole synchronous generator has Xdof 0.90 PU and Xqof 0.6 PU. The armature resistance is negligible and generator delivers rated KVA at unity P.F and rated terminal voltage. What is the value of excitation voltage?Correct answer is between '1.3,1.35'. Can you explain this answer? theory, EduRev gives you an
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