how to generate pulses with 180 deg phase shift

9 views (last 30 days)
i require 4 pulses for full bridge inverter. In one leg with out phase delay and on other leg with phse delay if 180 deg. here fs=60khz so ts=1/60000 dead time =0.5e-6 first leg phase shift= 0 here i generate two signals using pulse generator.now i require two pulses for 2nd leg with phase shift of 180 deg

Accepted Answer

Dishant Arora
Dishant Arora on 13 Jun 2014
Edited: Dishant Arora on 13 Jun 2014
A phase shift is equivalent to multiplication by a complex exponential in frequency domain. Take an fft of the whole signal and multiply each component (as a complex number) by the complex number cos(p) + i * sin(p) where p is the phase-shift given in radians. Afterwards take the inverse transform and you are done.
  1 Comment
Armando Marchena
Armando Marchena on 24 Nov 2015
Hi there Dishant Arora, I am thrying to do the same phase shift PWM. By multiplying each component, do you mean I have to take the FFT the split that into Re and Im, then multiply each by the fucntion cos(p) + i * sin(p) ?

Sign in to comment.

More Answers (0)

Categories

Find more on Fourier Analysis and Filtering in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!