How to generale three phase PWM?

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theredkid

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How to generate three phase PWM?

Hello,

I'm a newbie in these things and wondering how we can generate three phase (ab 25 kHz, 0 -5V) PWM in CCS C with PIC16/18. Thanx.

I know the single phase only below:

Code C - [expand]
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#include <16F72.h>
#use delay(clock=4000000)
#fuses NOWDT,XT, NOPROTECT
int value;
 
main()
{
   setup_adc_ports( ALL_ANALOG );
   setup_adc(ADC_CLOCK_INTERNAL );
   setup_timer_2 ( T2_DIV_BY_4, value, 2);
   set_adc_channel( 0 );
   setup_ccp1(CCP_pwm);
   while(true)
   {
      delay_ms(100);
      value = read_adc();
      setup_timer_2 ( T2_DIV_BY_16, value, 2);
   }
}
 
Last edited:

Re: How to generate three phase PWM?

I know that dsPIC30F have a Motor Control PWM module (MCPWM) which will generate three phase PWM, see the GS004 application note Driving an ACIM with the dsPIC® DSC MCPWM Module
https://ww1.microchip.com/downloads/en/DeviceDoc/93004A.pdf

it may give you some ideas
 

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