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Compiler: C2000

Tool/software: TI C/C++ Compiler

Hi...

I am working with 28379D and I want to synchronizes my switching frequency with frequency of the grid. Lets say I want to maintain 9 pulse mode at grid frequency of 50Hz. If frequency variations are from 46-54Hz, How to change Time base counter value in real time so that always 9-pulse is maintained, Obviously I am using PLL to calculate the grid template.

Regards

Vikas

  • Vikas, 

    This will need to be handled in software primarily.

    You will have a decision point where you will know the updated grid frequency, and write to the time base counter or period value .

    There will be a period in between when this decsion is made and the PWM are updated that you may have some incorrect pulses.

    Honestly, you may have to be specific on the question for us to help. We cannot offer consulation on system design, but only the C2000 MCU / TI silicon releated aspects of the questions.

    -Manish