how to generate pulses with 180 deg phase shift

Question

SRUTHI SURENDRAN 2014-6-13

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https://ww2.mathworks.cn/matlabcentral/answers/134039-how-to-generate-pulses-with-180-deg-phase-shift

评论： Armando Marchena 2015-11-24

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

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Answer 1

Dishant Arora 2014-6-13

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编辑：Dishant Arora 2014-6-13

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.

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Armando Marchena 2015-11-24

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) ?

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