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Power ElectronicsPWM Inverters

Sinusoidal PWM in an inverter is commonly obtained by comparing a low-frequency sinusoidal reference with a?

  • AHigh-frequency triangular carrier
  • BDC resistance
  • CSquare-wave load current only
  • DMechanical timing disk
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Correct Answer: A. High-frequency triangular carrier
Explanation: SPWM compares a sinusoidal modulating/reference signal with a higher-frequency triangular carrier to determine switching instants.
Reference: Standard power electronics: pwm inverters
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