pic controller for 3-phase inverter

Discussion in 'Embedded Systems and Microcontrollers' started by pendi87, Jan 11, 2010.

  1. pendi87

    Thread Starter New Member

    Jan 11, 2010
    3
    0
    hello everynone...anybody can help me to generate the PWM for 3-phase inverter using the PIC16F876...i used 120 conduction to generate the PWM signal...hopefully someone can help me...tq
     
  2. Chaabane

    Member

    Nov 30, 2009
    37
    0
    Unfortunately,you can't use PIC16F876 to generate 3 pwm,you can generate just 2 pwm with the same frequency.
    you need to move to 18f familly.PIC18F2331 or PIC18F2431 works just fine
     
  3. THE_RB

    AAC Fanatic!

    Feb 11, 2008
    5,435
    1,305
    You can generate 3 PWM easily in software. Since he only needs 50Hz or 60Hz (such a low frequency) it's a pretty easy task.

    I did a 50Hz dual sinewave generation in software on a little PIC 12F675;

    [​IMG]

    It would not be that hard to make it 3 sinewaves instead of 2.
    All my C source code for the PIC etc can be seen on this page (near the bottom);
    http://www.romanblack.com/one_sec.htm
     
  4. Markd77

    Senior Member

    Sep 7, 2009
    2,803
    594
  5. pendi87

    Thread Starter New Member

    Jan 11, 2010
    3
    0
    tq for the valuable information..i have a problem in programming to generate the PWM signal for 3-phase inverter...can u give a source code to generate the PWM signal if possible...tq for everything...i really appreciate your kindness..
     
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