Phase-Shift for Transformers

I would like to simulate a yd5, but i can't do the phase shift.

by dido0900
December 04, 2012

its easily done with this matrix:

latex-code(k is the phase-shift number): \left[\begin{array}{c} Ir\ Is\ It* \end{array}\right]=\frac{2}{3}\left[\begin{array}{ccc} \cos\left[k\cdot30\text{°}\right] & \cos[(k+4)\cdot30\text{°]} & \cos[(k-4)\cdot30\text{°]}\ \cos[(k-4)\cdot30\text{°]} & \cos\left[k\cdot30\text{°}\right] & \cos[(k+4)\cdot30\text{°]}\ \cos[(k+4)\cdot30\text{°]} & \cos[(k-4)\cdot30\text{°]} & \cos\left[k\cdot30\text{°}\right] \end{array}\right]\cdot\left[\begin{array}{c} Ir\ Is\ It \end{array}\right]

by dido0900
December 04, 2012

What's a yd5?

BTW: CL doesn't understand latex.

Neither do I.

:)

by signality
December 04, 2012

the Primary coil of the transformer is connected as Star (Y) and the secondary as Delta (d), the phaseshift between primary and secondary is 5*30°

by dido0900
January 04, 2013

In spice you can do this very simply using 6 inductors coupled by the k directive.

In CL, you need to build the model to do this from scratch.

https://www.circuitlab.com/browse/by-tag/multiwinding-transformer/

shows how to build a multiwinding transformer. You just need to adapt the technique to create 6 windings all at 1:1 turns ratio.

Or, use 3 separate 1:1 transfomers wired as shown in:

http://en.wikipedia.org/wiki/Delta-wye_transformer

by signality
January 04, 2013

:)

by signality
January 04, 2013

thanks alot! real great :)

by dido0900
January 05, 2013

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