Question

In case of MPM with two pulses per half cycle of width = d each and ɣ as the distance between the first pulse and ωt=0, for eliminating the nth harmonic from the output voltage, which of the following condition must be satisfied?

(a) d = 2π

(b) d = π

(c) d = n°

(d) d = 2π/n

The question was asked in examination.

I'd like to ask this question from PWM Inverters-2 topic in portion Inverters of Power Electronics

Answer 1

The correct choice is (d) d = 2π/n

To explain I would say: If d = 2π/n, sin (π) = 0 and the whole term is eliminated.