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sine triangle pwm genetation

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samic45mit1

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Dear All,

I want to design a three phase V/F drive using dspic 33. I want to know how to implement sine triangle PWM technique (please see the attachment) in C language.I don't understand how to compare two wave form at different frequency in software and generate pwm .Please any one can provide any example or tutorial for this.

Thank you sinusoidal-pwm-.jpg
 

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