GATE EE 2016 Set 1 — Question 60
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Power Electronics → Inverters → VSI (1φ, 3φ)
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Question
A single-phase full-bridge voltage source inverter (VSI) is fed from a 300 V battery. A pulse of duration is used to trigger the appropriate devices in each half-cycle. The rms value of the fundamental component of the output voltage, in volts, is
Correct answer
(A) 234
Solution
For a single-phase full-bridge VSI with quasi-square wave output (single pulse per half cycle), the RMS value of the harmonic component of the output voltage is given by:
where is the DC source voltage and is the pulse width.
Given:
V
Pulse width radians
For the fundamental component ():
V.
The closest option is 234 V.
where is the DC source voltage and is the pulse width.
Given:
V
Pulse width radians
For the fundamental component ():
V.
The closest option is 234 V.
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