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What is triple wound transformer
2

What is triple wound transformer

What is triple wound transformer

(OP)
Hi,
What is a triple-wound transformer? Does it have a relation to the number of rectifiers in a VFD? (i.e. 12 pulse rectifier uses triple-wound transformer and 6-pulse rectifier uses double-wound?)

Thank you in advance

RE: What is triple wound transformer

A 12-pulse rectifier could have a three-winding transformer, and a 6-pulse rectifier would have a two-winding transformer if it had one at all.  

But I've never heard "triple-wound" used to refer to a three-winding transformers.

Transmission-line type transformers sometimes use bifilar and trifilar windings, where the windings are twisted together before winding on the core.  

RE: What is triple wound transformer

I agree with dpc.  To add to his statement above:  a three-winding transformer, with a primary winding, a wye secondary, and a delta secondary, are often used on 12-pulse rectifiers.  The phase shift between the wye and delta windings provides "6 phases" or 12 pulses.

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