# How to model a transformer with different phase lag?

**URL:** https://forum.plexim.com/t/how-to-model-a-transformer-with-different-phase-lag/447
**Category:** PLECS
**Tags:** transformer, phase-lag
**Created:** [June 25, 2018, 11:19am UTC](https://forum.plexim.com/t/how-to-model-a-transformer-with-different-phase-lag/447 "2018-06-25T11:19:42Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![nikilito](https://avatars.discourse-cdn.com/v4/letter/n/dfb087/32.png) [@nikilito](https://forum.plexim.com/u/nikilito)
#### Post date: [June 25, 2018, 11:19am UTC](https://forum.plexim.com/t/how-to-model-a-transformer-with-different-phase-lag/447/1 "2018-06-25T11:19:42Z")

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Hi everyone!

I saw in the Plecs Library there is the transformer block but the phase lag of the secondary side can only be varied in steps of 60°.

Let’s suppose I would like to have a Dd transformer with +20 or -20 degree.. how could I model it?

Any advice or suggestion?

Thank you all!

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<div class="post-metadata">

### Author: ![nikilito](https://avatars.discourse-cdn.com/v4/letter/n/dfb087/32.png) [@nikilito](https://forum.plexim.com/u/nikilito)
#### Post date: [September 6, 2018, 6:26am UTC](https://forum.plexim.com/t/how-to-model-a-transformer-with-different-phase-lag/447/2 "2018-09-06T06:26:51Z")

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If someone is interested…

[https://www.researchgate.net/publication/37467950\_Modeling\_of\_Multi-Windings\_Phase\_Shifting\_Transformers\_for\_DC\_Supplies](https://www.researchgate.net/publication/37467950_Modeling_of_Multi-Windings_Phase_Shifting_Transformers_for_DC_Supplies)

It was difficult but it works!