DPWM

A K M Arafat

Intellectual 740 points

Other Parts Discussed in Thread: CONTROLSUITE

Hello,

I am wondering if have macro for discontinuous PWM (DPWM) like the SVPWM. Please anyone suggest.

Arafat

over 10 years ago

0 Rick Duncan over 10 years ago

TI__Guru** 114905 points

Hi Arafat,

Can you provide more details? Are you referring to a hardware or software macro? What are you trying to do with this?

Thanks.

0 A K M Arafat over 10 years ago in reply to Rick Duncan

Intellectual 740 points

Hello,

I want to do the vector control of my machine. Previously i generated the PWM using the SVPWM. There is a SVPWM software macro in CCS v.5. There i just declare the PWM registers and then called the SVPWM macro to generate the signals. I want to generate the signals using the discontinuous PWM method. If here would have any DPWM software macro/codes in CCS example i could be used is very conveniently. Please let me know if you need more information.

Thanks for your help.

Arafat

0 Milan Rajne over 10 years ago in reply to A K M Arafat

TI__Expert 8885 points

Arafat,

Discontinous PWM is very generic term, it not clear what exact PWM pattern you are referring with it?

Can you provide more detail about PWM pattern or any IEEE literature or white paper which describes it in more detail?

As far a I understand, on C2000 forum, we have macro only for SVPWM (different types) and normal PWM used in trap control.

Best Regards

Milan-Motor Application Team

0 A K M Arafat over 10 years ago in reply to Milan Rajne

Intellectual 740 points

Hello,

Thanks for your replying. In general ,in the DPWM, the PWM will not be continuous. There are many more literatures which i want to add for you.5123.DPWM1.pdf 7444.DPWM2.pdf 4370.DPWM3.pdf

What are others SVPWM are available in TI? Are they somewhat related to DPWM? Please suggest me.

Thanks for your time.

Arafat

0 Milan Rajne over 10 years ago in reply to A K M Arafat

TI__Expert 8885 points

Arafat,

Thanks for sharing the details. This was new learning for me. Actually, I knew about these PWMs but as hybrid PWMs, never realised that they are reffered to DPWM.

Ok to come to main point, I re-visited the application lib of C2000 macros and found out that we provide macro for DPWMmin. Please refer to page 148 of attached doument.

To get the macro code, you can down-load and install latest control-suite:

http://www.ti.com/tool/ControlSUITE

and look for C:\ti\controlSUITE\libs\app_libs\motor_control\math_blocks\v4.2 folder for gettting the macro code.

Best Regards

Milan-Motor Application Team

0207.DMC MATH_v13.1.pdf

0 A K M Arafat over 10 years ago in reply to Milan Rajne

Intellectual 740 points

Hello, That was an awesome help from your side. i got exact ans what i wanted. Thanks for your support.

Arafat

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DPWM