Hello all
I'm pondering the characteristics of similar but not identical transformers in series. Specifically, with the primaries in parallel and the secondaries in series. Assume that all the secondary winding are have the same current rating, but the cores have slightly different reluctances and primary current ratings ratings.
What will limit the current of short circuiting the series string of secondaries?
For the purpose of choosing the current rating required by the secondary coils.
How I think this could go:
I would like to think we could use conservation of energy and divide the total input power by the open voltage of the secondary string, to get the ideal maximum current. Although, that seems to simple..
Otherwise I suppose the current would be limited by the 'weakest' transformer. If so I suppose the voltage contribution from the weak transformer would drop as the other transformers provide a higher amount of current. That also doesn't seem like the complete picture, then the current would be determined be the strongest transformer and there would be some voltage much lower than the original open circuit, but a bit bigger than if the strongest transformer was on its own.
I'm pondering the characteristics of similar but not identical transformers in series. Specifically, with the primaries in parallel and the secondaries in series. Assume that all the secondary winding are have the same current rating, but the cores have slightly different reluctances and primary current ratings ratings.
What will limit the current of short circuiting the series string of secondaries?
For the purpose of choosing the current rating required by the secondary coils.
How I think this could go:
I would like to think we could use conservation of energy and divide the total input power by the open voltage of the secondary string, to get the ideal maximum current. Although, that seems to simple..
Otherwise I suppose the current would be limited by the 'weakest' transformer. If so I suppose the voltage contribution from the weak transformer would drop as the other transformers provide a higher amount of current. That also doesn't seem like the complete picture, then the current would be determined be the strongest transformer and there would be some voltage much lower than the original open circuit, but a bit bigger than if the strongest transformer was on its own.