Correct Answer : Option (D) : Controlling output harmonics and output voltage.
Explanation : PWM stands for Pulse Width Modulation. It is used in the voltage source inverter to control the output voltage and output harmonics.
It is a method of controlling the average power of a signal over a continuous range by switching it between on and off states.
It is a method of generating amplitude modulation. By increasing the number of pulses per half cycle, the order of harmonic frequency increases so that the filter's size is reduced.
