Help required in generating switching pattern

Altair Forum User
Altair Forum User
Altair Employee
edited August 2023 in Community Q&A

I am simulating a project in PSIM for which I need to generate switching signals for IGBTs. I have seen a PWM example in PSIM but my confusion is how to add short patches in PWM where it becomes zero for a certain time and continues after it. I'm attaching a picture of the required PWM pattern (FIG 7). Now If we just look at signal E, it becomes 0 just before the positive cycle ends how I can do it in PSIM also signal AD in on during +ve cycle only and signal BC is on during -ve cycle only how I can generate such kind of PWM in PSIM

image

Tagged:

Answers

  • Rhonda_20369
    Rhonda_20369 New Altair Community Member
    edited August 2023

    If the frequency of your sine wave is fixed, you may use a monostable and set the pulse width shorter than 1/2 of the sine frequency.

    You may write your own C code instead of using the logic gates.

Categories