Hi,
Currently I am using TI Dsp f28335. I am using embedded coder to generate PWM pulses. I need to generate a square wave of 50Hz frequency, a sine PWM of modulation frequency 50 Hz and carrier frequency of 50Khz. These sine PWM and square pulse have to be started at same time. I tried using pwm blocks in embedded support package for both. I got square pulse and SPWM pulses, but they are not starting at same time. Please suggest some ways to get.
Thank you
It can be done via Simulink easily, while you using the EPWM modules. all you have to do is shifting the input 50 Hz sine wave in the positive side.
attached an example for one leg of a three VSI, Simply shift the sine wave by 120 to drive phase b, 240 for phase C.
Mohamed sir,
I checked your file using f28335 hardware. you circuit will generate a single spwm signal of reference wave frequency 50hz and carrier frequency of higher frequency.
But what I need is as shown in picture. I need one signal of spwm whose reference wave frequency is 50hz and carrier wave frequency of 50khz, I need two complimentary square pulses of 50 hz frequency. These square pulses and spwm pulses need to be synchronized.
Thank you.
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