For this purpose, I decided to use carrier frequency at 10kHz. So, it’s not too high or too low either. At this carrier frequency to produce one cycle of a 50Hz sine wave, we need 200 PWM. .
The Interrupt Service routine for TIMER/COUNTER1 does all tasks to generate Sinusoidal Pulse Width Modulation In the ISR the value in lookUp1 is read and entered in the OCR1X register after being corrected with the modulation index value and also. .
Here is the complete code for Arduino Uno Sinusoidal Pulse Width Modulation, which you can download here Hope you enjoy this work, I’m very happy if this can be useful for all of us. For this purpose, I decided to use carrier frequency at 10kHz. So, it’s not too high or too low either. At this carrier frequency to produce one cycle of a 50Hz sine wave, we need 200 PWM cycles. The calculation is like this: PWM pulse = F carrier / F sine PWM pulse = 10.000 Hz / 50 Hz = 200 [pdf]
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