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Power ElectronicsInverter Numericals

For an ideal single-phase full-bridge square-wave inverter with DC input Vdc, the RMS value of the fundamental output-voltage component is approximately?

  • A0.45 Vdc
  • B0.90 Vdc
  • C1.11 Vdc
  • D1.27 Vdc
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Correct Answer: B. 0.90 Vdc
Explanation: The fundamental peak is 4Vdc/pi; its RMS value is 4Vdc/(pi sqrt2)≈0.900Vdc.
Reference: Standard power electronics: inverter numericals
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