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TINA-TI: SPWM simulation getting problem

Pulkit Prajapati74
Prodigy 250 points
Part Number: TINA-TI


Hello,

I am doing a simulation of inverter and therefore I required to generate SPWM(Sinusoidal PWM).

But I have a problem with DC source and input bulk capacitor. If I am connecting a capacitor in left block then the Output of SPWM is not complete for the starting and ending of Sine Wave.

If I am disconnecting the capacitor than output is as expected. I can not understand what is the reason behind this problem?

Please let me know what should I do?

T-Type_inverter.TSC

  • 0
    Prodigy 5 points

    Hello Pulkit,

    Interesting project you are working on.

    Thank you for your inquiry about TINA features.
    TINA is a DesignSoft/TINA program, questions are best handled by using the DesignSoft support page:

    http://www.tina.com/technical-support/

    The DesignSoft/TINA team is very helpful and this is the most direct way for TINA support. 
    If your query is not resolved satisfactorily please let us know by replying back to this thread.

  • 0
    Guru 140200 points

    Hi Pulkit,

    what signal do you connect to what other signal? I don't understand.

    Kai

  • 0 in reply to kai klaas69
    Prodigy 250 points

    Hi, kai klaas69,

    I am simulating NPC t type inverter. So the right side block is for the generation of PWM and the left side is of DC to AC inverter part.

    But after troubleshooting, I had found that I have a problem in generating the SPWM signal as shown in the image.

    If I am not connecting both DC stack capacitor to bus voltage then SPWM generation works well. Please check my full simulation circuit but for some reason, I am not getting the actual signal. I want to know how can I overcome this problem?

    Regards

    Pulkit Prajapati