Activate coupled with Flux issue

yugang
yugang Altair Community Member
edited October 2020 in Community Q&A

Hello,

These days, I work with Flux coupled with Activate for simulation of contactor dynamic behavior. The contactor has 2 coils, 3 switches. The 3 switch is controlled by activate. While the current of the 2 coils are used as sensor input for Activate.

 

But when I start the simulation, at beginning the current in the coil seems reasonable. But after 5ms, or like this, the current and voltage on the coil starts to become very strange, and non-meaning, just noisy points, I don’t under stand why. I think, the activate only control the switch and do some control, very simple, the Flux finish FEM calculation.

When I work with Flux alone, same calculation performed, no noisy points. For solver I use Forward Euler same as tutorial showed for activate and Flux coupling simulation.

 

 

The attached document has some picture to make my issue more clear.

I hope I can get some help for this topic.

Thanks.

 

 

 

 

 

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