MATLAB: How to create an ideal transformer in SimPowerSystems

blocksetpowersimpowersystemSimscape Electricalsystems

The documentation for the Linear Transformer block states that:
 To implement an ideal transformer model, 
 set the winding resistances and inductances
to 0, and the magnetization resistance
and inductance to inf.
I try to create an ideal transformer in the demo model psbtransfo.mdl. However, if I set the parameters accordingly and run the model, I get the following error dialog box:
 Error in block 'Linear Transformer 75kVA 14400-120-120V,
 Parameter 'Rm' must have a finite value
and the following Simulink error:
 Error evaluating 'InitFcn' callback of Voltage Measurement block (mask) 'PQ'. Error using ==> d:/matlab6p5/toolbox/powersys/powersys/private/blocinit (errorInf)
 Parameter error

Best Answer

This bug has been fixed for Release 14 (R14). For previous releases, read below for any possible workarounds:
This is an error in documentation in SimPowerSystems 2.3 (R13).
The documentation should read as follows:
 To implement a quasi-ideal transformer model, 
 set the winding resistances and inductances to 0, 
 and the magnetization inductance Lm to inf. 
 The Rm value must have a finite value. 
 Use a large value such as 1e4.
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