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3-level converter svpwm

Moises Castillo1
Prodigy 40 points

Dear All,

I am looking about how to implement the 3-level converter svpwm in a F28335 or in a C28346 DSP. 

TI published an application note, SPRABS6, where it is described a method for the implementation of a center aligned svpwm.

I have the following doubts about this subject:

1. The C-code for the method described in the SPRABS6 is available? Where?

2. This method is the only option for the implementation of a 3-level svpwm in these DSPs?

Thanks in advance,

Moises

  • 0
    TI__Guru** 119680 points

    1. No, sorry, neither the code nor simulation are being released at this point. We tend to try to release items as a full "system" with fully working hardware example.

    2. No, this is not the only method, just one for education.

     

  • 0
    Guru 192875 points

    Hi,

    1. The C-code for the method described in the SPRABS6 is available? Where?

    This does not seem to be freely downloadable. I guess you'll have to request for the same to a FAE.

    2. This method is the only option for the implementation of a 3-level svpwm in these DSPs?

    This is the only application note available on the site, there seem to be other methodologies too.

    Regards,

    Gautam

  • 0 in reply to Gautam Iyer
    Prodigy 40 points

    Hi,

    Indeed the procedure indicated in the SPRABS6 is oriented to microcontrollers with limited number of PWM outputs.

    By other hand, the C28346 or the F28335 have 9 PWM, which one with a PWMxA and PWMxB. So, in total, there are 18 PWM outputs.

    To make a 3-level inverter it is necessary to have 12 outputs. so, I believe that is possible to use them for a 3 level inverter. Am I right?

    Best regards,

    Moises