#835 transformer 1:1 voltage ratio causes instability in NR mode,

[nikhilgupta10]

When using a 1:1 voltage ratio in NR mode, the solution does not converge. When switching to FBS or moving to a slightly off 1.0 turns ratio, it solves fine.

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[nikhilgupta10]

nikhilgupta10 imported these comments from Sourceforge: "jcfuller": * attachment _forum05202014.glm added ,

"ftuffner": * status changed from new to accepted

Problem occurs in NR due to transformers being primarily caught by oltage_ratio != 1\, which in a unity turns ratio, is invalid. Fixed this to be more generic.

Committed to 3.1 as r4706

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"ftuffner":Committed to trunk as r4707

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"ftuffner": * status changed from accepted to closed

• resolution set to fixed

Closing out as resolved.

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