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Why the phase-phase voltage and current measurement are like this?

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Babak
Babak on 16 Dec 2016
Commented: cool on 18 Dec 2016
Hi, Do you have any idea why my phase-phase voltage and current has DC component? It is like that my phase-phase voltage and current are shifted up; However, My line to line voltage is correct! <<
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Answers (1)

cool
cool on 16 Dec 2016
your reference point for DC side is not right. to measure the DC side voltage, you should measure the DC+ to DC-, not to the ground.

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Babak
Babak on 16 Dec 2016
Hi Cool, I didn't measure the DC side voltage or current?!! What I am measuring is on the AC side. Why the AC side voltage and current are shifted?
cool
cool on 18 Dec 2016
sorry, i made a mistake. maybe you can try this. put 2 voltage source in series, whose value is half of the original one. then put the voltage reference on the middle of it.

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