Quote:
Originally Posted by woodchips
I am making a static single to three phase converter rated at 8kW, the transformer I am using isn't really up to it so bought these to boost the power. Need the 150V to add to the generator 230V to get 380V for the motor. Because the 230V in actually provides all the three phase current it is not obvious what the various currents circulating are. Got lots of spare time to think about it at the moment though.
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The transformer in question would seem to be a 1kVA unit that has three secondary windings capable of providing 40A at 24V with a 400V 3ph input.
Your discussions concerning connectivity and Voltage values notwithstanding would need further investigation as clearly if we reduce the primary Voltage by root 3 (230V) we would get 24V on the secondary less the root 3 value which would be 13.8 Volts which is what you are reading?
Regrettably however confirmation of the latter would be academic as there remains one great obstacle. You cannot add or superimpose a Voltage upon another equivalent Voltage without incorporating some form of synchronising device. Rate of change of Frequency (ROCOF) devices may also be desired if some form of external regulation may be required.
You could get a 230V transformer with a 24V secondary to connect to your generator and then feed the 24V into the secondary of the items in question?