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| Arbitrary (saturable) coupled inductors in LTSpice |
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| uer166:
Trying to simulate saturable coupled inductors/transformers in LTspice for some current sensing project, but seems like I can't couple arbitrary inductors. I would like to simulate a transformer with a defined saturation level, slope, and hysterisis, but seems like I'm going about it the wrong way? I tried reading http://ltwiki.org/?title=Transformers, but seems incomplete regarding this topic.. Anyone know what to do? |
| cur8xgo:
I dont know how to do this I just googled it..this looks interesting https://electronics.stackexchange.com/questions/243927/transformer-with-hysteresis-in-ltspice |
| Jay_Diddy_B:
--- Quote from: uer166 on June 21, 2019, 11:32:20 pm ---Trying to simulate saturable coupled inductors/transformers in LTspice for some current sensing project, but seems like I can't couple arbitrary inductors. I would like to simulate a transformer with a defined saturation level, slope, and hysterisis, but seems like I'm going about it the wrong way? I tried reading http://ltwiki.org/?title=Transformers, but seems incomplete regarding this topic.. Anyone know what to do? --- End quote --- Can you provide details of the core that you are looking to model? I will also need the winding information. This can be done in LTspice, I will try and do it for you. Regards, Jay_Diddy_B |
| uer166:
The core itself is inconsequential, just trying to figure out a general way to do it. As example, and should be pretty close to something realistic I would use: Core material is Square Orthonol: https://www.mag-inc.com/Products/Tape-Wound-Cores/Square-Orthonol/Square-Orthonol-Material-Property-Curves Some arbitrary core size: 0.5cm^2 cross section area, 10cm magnetic path length. Turns: 20 turns per winding, 1:1 ratio. Use case would be: apply a known DC voltage to one winding, wait for current to ramp and saturate, look at the EMF output of secondary winding. |
| ahbushnell:
--- Quote from: uer166 on June 21, 2019, 11:32:20 pm ---Trying to simulate saturable coupled inductors/transformers in LTspice for some current sensing project, but seems like I can't couple arbitrary inductors. --- End quote --- Here is a paper on the topic from TI. http://www.ti.com/lit/ml/slup109/slup109.pdf Nonlinear simulation can be complicated. Depends on what you are trying to do. TI as other sources of information. And your local library. Good luck Andy |
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