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Three phase grid connected inverter

FF003

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Hi Everyone,

I have simulated the system of the attached photo. According to the photo, I am controlling the line to line voltage and phase current of the inverter side of the system. The controlled voltages and currents are in the same phase, but the voltage and current at the grid side (PCC) are not in the same phase. As I am using two transformers, delta to wye and wye to delta I expected that the output voltage and current also be in the same phase. Could you please help me regarding this problem?? I don't know how these two transformers are affecting the phases of the voltages and currents which make them not to be in the same phase. Thanks.
 

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