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ADC converter for F28069 in MATLAB



Hello,

I am working on digital control of Invertor. I am new micro-controller user. I am able to operate 3 phase invertor in open loop.

I have difficulty to in close loop control. when I am feeding DC signal from function generator to ADC to ePWM it is generating oscillating PWM signals. How can I fix this oscillating PWM signals. my PWM frequency is 1.25 kHz. here are some screenshots.  Thank you in advance for help.