Will this work, or will the transformer induce a phase-shift?
Will the transformer's output be phase shifted with respect to its input?And here was me thinking the question was what is quoted abovejack
Detla-Wye transformers appear to have very large (30 degree) phase shifts simply because of the difference in connection between primary and secondary. Through suitable interconnection of different secondary coils from a three phase primary (you may need more than three secondaries, and they may have different numbers of turns) you could get any phase shift desired. For example, special transformers are sometimes used to generate 18 phases on the secondary, each with its own phase displacement, in order to feed rectifiers and get smoother DC.But the original question really speaks to phase shift in a single phase transformer. An ideal single phase transformer doesn't produce any phase shift; the output signal is a perfect in phase copy of the input signal. Real transformers have numerous non-idea features, and will produce a small phase shift. This can be minimized but not eliminated, by using more expensive construction techniques. It becomes an engineering problem to select a transformer with sufficiently small phase shift and distortion for any given application.
The thermal time constant will insure you get just as good a results if you turn it on and off at the rate of say one second.
Either way it must be physically impossible (however minute - or large) for output and input voltages to be in phase irrespective of load. Input current produces magnetic flux and this must lag drive voltage ( CIVIL) since flux is a reaction to an action. The output voltage can only be induced by the core flux which is already lagging the drive voltage and the output current again lags the output voltage. Hnece the output voltage and current must lag the input voltage and current.