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A-3-ϕ bridge inverter delivers power to a resistive load from a 450 V dc source. For a star connected load of 15 Ω per phase, the rms value of thyristor current is__________(Assume 180° CM)
- a)5 A
- b)15 A
- c)10 A
- d)20 A
Correct answer is option 'C'. Can you explain this answer?
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A-3-ϕ bridge inverter delivers power to a resistive load from a 450 V...
In 180° CM, waveform of thyristor current is
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Given data:
- A-3-ϕ bridge inverter
- Power delivered to a resistive load
- 450 V dc source
- Star connected load of 15 Ω per phase
- 180° conduction mode
- Find the rms value of thyristor current
Calculations:
- The rms value of thyristor current is given by:
- I_rms = (1/2π) * √(2/3) * I_avg
- Where, I_avg is the average value of thyristor current
- In A-3-ϕ bridge inverter, each thyristor conducts for 180° in one cycle and is off for the remaining 180°. So, the average value of thyristor current is:
- I_avg = (V_dc/π*Load) * (1/2) * (2/π) * (1/2)
- Where, V_dc is the dc source voltage, Load is the load resistance per phase
- (1/2) is the duty cycle for each thyristor, (2/π) is the value of sin(θ) for θ = 180°
- Therefore, I_avg = (450/π*(15)) * (1/2) * (2/π) * (1/2) = 5A
- Now, substituting the value of I_avg in the above formula, we get:
- I_rms = (1/2π) * √(2/3) * 5 = 10A
Therefore, the rms value of thyristor current is 10A. Hence, option (C) is the correct answer.
- A-3-ϕ bridge inverter
- Power delivered to a resistive load
- 450 V dc source
- Star connected load of 15 Ω per phase
- 180° conduction mode
- Find the rms value of thyristor current
Calculations:
- The rms value of thyristor current is given by:
- I_rms = (1/2π) * √(2/3) * I_avg
- Where, I_avg is the average value of thyristor current
- In A-3-ϕ bridge inverter, each thyristor conducts for 180° in one cycle and is off for the remaining 180°. So, the average value of thyristor current is:
- I_avg = (V_dc/π*Load) * (1/2) * (2/π) * (1/2)
- Where, V_dc is the dc source voltage, Load is the load resistance per phase
- (1/2) is the duty cycle for each thyristor, (2/π) is the value of sin(θ) for θ = 180°
- Therefore, I_avg = (450/π*(15)) * (1/2) * (2/π) * (1/2) = 5A
- Now, substituting the value of I_avg in the above formula, we get:
- I_rms = (1/2π) * √(2/3) * 5 = 10A
Therefore, the rms value of thyristor current is 10A. Hence, option (C) is the correct answer.
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A-3-ϕ bridge inverter delivers power to a resistive load from a 450 V dc source. For a star connected load of 15 Ω per phase, the rms value of thyristor current is__________(Assume 180° CM)a)5 Ab)15 Ac)10 Ad)20 ACorrect answer is option 'C'. Can you explain this answer?
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A-3-ϕ bridge inverter delivers power to a resistive load from a 450 V dc source. For a star connected load of 15 Ω per phase, the rms value of thyristor current is__________(Assume 180° CM)a)5 Ab)15 Ac)10 Ad)20 ACorrect answer is option 'C'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about A-3-ϕ bridge inverter delivers power to a resistive load from a 450 V dc source. For a star connected load of 15 Ω per phase, the rms value of thyristor current is__________(Assume 180° CM)a)5 Ab)15 Ac)10 Ad)20 ACorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A-3-ϕ bridge inverter delivers power to a resistive load from a 450 V dc source. For a star connected load of 15 Ω per phase, the rms value of thyristor current is__________(Assume 180° CM)a)5 Ab)15 Ac)10 Ad)20 ACorrect answer is option 'C'. Can you explain this answer?.
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