simulate and extract PWM phase A, from output of “Space Vector Generator block” C28x DMC library of MATLAB

Ali,

I have requested someone from Mathworks to look into it. Hopefully someone from Mathworks will answer your question in next few days.

Regards,
Manoj

Hi Manoj,

thank you so much.

and i think it is related to how SVPWM method works more. Because i do not have problem to implement  any simulation in matlab; just i think i do not know how SVPWM works.

for example if we can build PWM waveform from output of SVPWM blocks according to "Digital motor control" (below picture) so why Ta/Tb/Tc have minus values in half of their period? because they are time . how can they be minus ?

Hi Ali,

We have a simulation model using the same DMC library block at the link:
in.mathworks.com/.../simulation-of-foc-using-pmsm-model.html

Hi Venkatesh ,

thank you for your answer, but as you see, there is a C28x PWM block

with no output to show 6 PWM wave forms in simulation environment.

If guide me to know how svpwm works (svpwm output picture from your

simulation file attached ) , i can simulate 6 PWM waveform anywhere.

i want to rebuild these 6 pwm in simulation, not monitor them from

real implementation.

best wishes

it is just PWM Duty Cycle , not 6 PWM wave form. how can i extract 6 PWM from PWM Duty Cycle in simulation environments not monitor from real implementation?
thank you

Hi Ali,

The PWM blocks do not have simulation capability to be able to generate the PWM waveform as the hardware would do.
They are peripheral blocks meant to be used for code generation, that is the reason we have taped duty cycle before this block.
I am sorry but we do not support simulation capability for the peripheral blocks.

Hi Venkatesh ,

thank you.
can you please guide me to know where i can learn about how SVPWM works ? (i have read "Digital Motor Control" library document)
So i can use outputs of PWM Duty cycle block to produce PWM wave myself in simulation.
i have seen several document in Internet but i do not know which one is more appropriate for TI SVPWM output.


best wishes

Hi Ali,

Please take a look at these two threads which might give you more information. Thanks.
e2e.ti.com/.../330437
e2e.ti.com/.../97223

Regards,
Chen