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Power ElectronicsRectifier Numericals

For a single-phase half-wave controlled rectifier with resistive load and supply peak Vm, the average output voltage is?

  • AVm(1+cos alpha)/(2pi)
  • B2Vm cos alpha/pi
  • CVm sin alpha/pi
  • DVm(1-cos alpha)/pi
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Correct Answer: A. Vm(1+cos alpha)/(2pi)
Explanation: Averaging Vm sin(theta) from alpha to pi over a full 2pi period gives Vdc=Vm(1+cos alpha)/(2pi).
Reference: Standard power electronics: rectifier numericals
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