# How to calculate the magnetic resistance for the transformer simulation in the Plecs Magnetic Domain?

**URL:** <https://forum.plexim.com/t/how-to-calculate-the-magnetic-resistance-for-the-transformer-simulation-in-the-plecs-magnetic-domain/645>\
**Category:** PLECS\
**Tags:** transformer\
**Created:** [April 8, 2019, 11:05am UTC](https://forum.plexim.com/t/how-to-calculate-the-magnetic-resistance-for-the-transformer-simulation-in-the-plecs-magnetic-domain/645 "2019-04-08T11:05:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![leo601008](https://avatars.discourse-cdn.com/v4/letter/l/958977/32.png) [@leo601008](https://forum.plexim.com/u/leo601008)\
**Post date:** [April 8, 2019, 11:05am UTC](https://forum.plexim.com/t/how-to-calculate-the-magnetic-resistance-for-the-transformer-simulation-in-the-plecs-magnetic-domain/645/1 "2019-04-08T11:05:03Z")

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Hallo,

I am trying to simulate a transformer model in the Plecs magnetic domain. I know that the magnetic resistance is for modeling core losses. Can I get the parameter of the magnetic resistance just from the geometry? Because I don’t know the core losses and I want to use the magnetic reisistance to simulate(calculate) it.

Thanks.

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**Author:** ![Kris\_Eberle](https://dub1.discourse-cdn.com/flex006/user_avatar/forum.plexim.com/kris_eberle/32/6_2.png) [@Kris\_Eberle](https://forum.plexim.com/u/Kris_Eberle)\
**Post date:** [April 11, 2019, 12:47pm UTC](https://forum.plexim.com/t/how-to-calculate-the-magnetic-resistance-for-the-transformer-simulation-in-the-plecs-magnetic-domain/645/2 "2019-04-11T12:47:23Z")

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Hello,

Here is a great resource from our colleague at Plexim’s PhD research: [https://infoscience.epfl.ch/record/253555/files/2018\_APEC\_Luo.pdf](https://infoscience.epfl.ch/record/253555/files/2018_APEC_Luo.pdf) Inside you will find the calculation of the resistance value for a transformer laminate.

Best regards,

Kris