How To: Three phase step down transformer on LTspice?

Thread Starter

babaliaris

Joined Nov 19, 2019
115
I searched on the internet for some examples, but they weren't clear. I tried to figure it out myself but it doesn't work.

I tried making a 4:1 step-down transformer in Y-Y configuration, but the output voltages (x,y,z) are different and not equal to 100V (peak).

What am I doing wrong? Is it the coupling? Does it have to be something like K L1 L2 L3 L4 L5 L6 1?

Thank you.

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Thread Starter

babaliaris

Joined Nov 19, 2019
115
@Alec_t by the way is there a "black box" in LTspice that can be used as a transformer for more complex circutiuts? So I won't have to make this every time. Thank you!
 

Alec_t

Joined Sep 17, 2013
12,808
I expect someone (e.g. @Bordodynov) has made a model, but as transformers can have such a range of properties it would involve setting a lot of parameters for a realistic model, so may not save a lot of time over doing what you have already done.
 
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