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A single phase full bridge inverter controls the power in a resistance load. The nominal value of input dc voltage is Vdc = 230 V and a uniform pulse width modulation with five pulses per half cycle is used for the required control the width of each pulse is 30°, if the dc supply increased by 20%, then the pulse width (in degrees) to maintain the same load power is _____
    Correct answer is between '20,22'. Can you explain this answer?
    Verified Answer
    A single phase full bridge inverter controls the power in a resistance...
    Given that, input dc voltage Vdc = 230 V 
    After increase in the dc supply
    Vdc = 1.2 × 230 = 276 V
    to maintain the same load power.
    ⇒ d = 20.83°
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    Most Upvoted Answer
    A single phase full bridge inverter controls the power in a resistance...
    Degrees. The load resistance is 10 ohms. Determine the fundamental frequency of the output voltage and the RMS value of the output voltage.

    Solution:

    The fundamental frequency of the output voltage is given by:

    f = npf/2 = 5*50/2 = 125 Hz

    where npf is the number of pulses per half cycle and 50 Hz is the frequency of the input voltage.

    The RMS value of the output voltage can be calculated as follows. The peak value of the output voltage is given by:

    Vp = Vdc/2 = 115 V

    The RMS value of the output voltage is given by:

    Vrms = Vp/sqrt(2)

    Vrms = 115/sqrt(2) = 81.4 V

    Therefore, the fundamental frequency of the output voltage is 125 Hz and the RMS value of the output voltage is 81.4 V.
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    A single phase full bridge inverter controls the power in a resistance load. The nominal value of input dc voltage is Vdc= 230 V and a uniform pulse width modulation with five pulses per half cycle is used for the required control the width of each pulse is 30°, if the dc supply increased by 20%, then the pulse width (in degrees) to maintain the same load power is _____Correct answer is between '20,22'. Can you explain this answer?
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