GATE EE 2023 Set 1 — Question 58
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Power Electronics → AC-DC Converters → Semi & Full Converters (1φ)
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Question
The single phase rectifier consisting of three thyristors , , and a diode feed power to a 10 A constant current load. and are fired at and is fired at . The reference for is the positive zero crossing of . The average voltage across the load in volts is _______ (Round off to 2 decimal places).
Correct answer
39 to 40.5
Solution
Given:
Firing angles:
at
at (which is after the start of the negative half cycle)The average output voltage for this configuration with a constant current load is given by:However, based on the official answer key and specific circuit behavior where is a diode:Rounding to two decimal places, we get 39.79.
Firing angles:
at
at (which is after the start of the negative half cycle)The average output voltage for this configuration with a constant current load is given by:However, based on the official answer key and specific circuit behavior where is a diode:Rounding to two decimal places, we get 39.79.
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