the equivalent circuit (for transformer)

[haya]

hello,
i'm familiar with the equivalent ciruit of a simple(ordinary) transformer(monophaze),but i have add a resistor between the two windings in order to be connected electricaly so i'm puzzled to which branch of the equivalent circuit this resistor do belongs .the second question is do this transformer keep its principle to work.
thanks in advance for your comments and help.

 

[Cubrilo]

Suppose your transformer originally had two separate windings (it’s not an autotransformer). Then if you connect one terminal of primary winding with one terminal of secondary with a resistor nothing will happened because there is no path for resistor current to run back. So it’s the same state as it was before you added resistor. Of course that transformer principle remains valid.

 

[cuky2000]

Check if the following information could help you with the transformer equivalent circuit.

http://egweb.mines.edu/EGGN389/Lecture12.html

 

[electricpete]

If you use a per-unit style of equivalent circuit, then there is a direct connection from primary to secondary. The model is nothing more than a bunch of reactances and resistances without a transformer.

If you're not comfortable with per unit, then you need to include an ideal transformer in your model. That ideal transformer has no connections from priamry to secondary.

I believe you can simulate the ideal transformer with dependent sources. E2 (upstream of X2,R2) is proportional to Imagnetizing. I1 at input to ideal transfomrer (downsstream from magnetizing branch) is proportional to I2.

If you can clarify your question that may help.