GDT model in Simscape

Question

Santiago Alfonso Ospina Botero 2023-3-22

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1933235-gdt-model-in-simscape

回答： Joel Van Sickel 2023-4-4

采纳的回答： Joel Van Sickel

GDT_TEST.slx

Hi,

I'm trying to model a GDT based on a paper called Gas Discharge Tube Modeling With PSpice. Julio Guillermo Zola

I tried to implement this on Simscape but it doesn'n work. The solver has lots of problems with the simulation and I tried to switch to put in the solver configuration block to change the solver to " Local Sover" and use Backward Euler and decreased the step sixe but the results explode

Any idea on what could happen? (Find the model attached)

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Answer 1

Joel Van Sickel 2023-4-4

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https://ww2.mathworks.cn/matlabcentral/answers/1933235-gdt-model-in-simscape#answer_1208614

As a start, it looks like you've used simple diode models and put breakdown voltage where forward voltage goes. I would choose a higher fidelity diode model and paramterize it more closely to the spice defaults from that paper. It also looks you are using mostly generic paramters for the transistors and I don't know if those line up well with the default values for a spice transistor, so that is another good area to look at for a start.