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Advice on decreasing Simulation time for model "mcb_inver​ter_powerl​oss.slx"

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Jacob
Jacob 2023 年 9 月 7 日
コメント済み: Jacob 2023 年 9 月 11 日
Hello Community,
I have duplicated and modified "mcb_inverter_powerloss.slx" simulink project to include our motor and custom inverter specs. In the original model there is only one fet in parallel. In our hardware, we have 3 in parallel. On simulating with 1 fets in parallel,it takes about 30 mins to complete. With 3 in parallel, it takes considerable time to go through each of the modulation scheme. Are there any advice on simulating this model with multiple fets in parallel?
If there isn't anything that can be done on the matlab software side. Will having better cpu improve simulation time of this model?
Regards

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KrishnaKumar
KrishnaKumar 2023 年 9 月 11 日
編集済み: KrishnaKumar 2023 年 9 月 11 日
Hi Jacob,
The model uses Simscape elements for computing power losses and THD in an Inverter + Motor system and usually such models are time consuming. You can take a look at Setting Up Solvers for Physical Models - MATLAB & Simulink (mathworks.com) or any other material on Simscape modelling to help you in achieving better simulation time.
Alternately, depending on your goal, if you only wish to look at power losses, then commenting out the THD computation (or vice versa) could help with improving simulation time. You could also look at using an equivalent single FET/MOSFET instead of 3 in parallel to improve simulation time.
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Jacob
Jacob 2023 年 9 月 11 日
Thank you KrishnaKumar for replying. I will go through and check your suggestion on the model.

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