This is the first time in circuits that something doesn't make sense. In all the circuits that I've learned so far, the same amount of current that is drawn from the source returns back to the minus terminal of the source. According to our professors, this is a key characteristic, in order for Kirchhoff's laws to stand.
This does not seem to be happening in a symmetrical three-phase (Y-Y configuration) circuit. All 3 currents start at the positive terminals of each source and then through each line they enter each load and end up on the neutral. But the neutral current is zero. Where do the currents go from there? Do they sum up somehow, maybe exterminating each other (that's unlikely)? In a Delta configuration, things are more confusing...
My tutor told me I will understand when I'll learn Electromagnetic Theory, but thinking in a Kirchhoff way, why it doesn't make sense? Once all the currents in the load reach the neutral (I1+I2+I3 = 0), how are they returning back to the sources?
Thank you.
This does not seem to be happening in a symmetrical three-phase (Y-Y configuration) circuit. All 3 currents start at the positive terminals of each source and then through each line they enter each load and end up on the neutral. But the neutral current is zero. Where do the currents go from there? Do they sum up somehow, maybe exterminating each other (that's unlikely)? In a Delta configuration, things are more confusing...
My tutor told me I will understand when I'll learn Electromagnetic Theory, but thinking in a Kirchhoff way, why it doesn't make sense? Once all the currents in the load reach the neutral (I1+I2+I3 = 0), how are they returning back to the sources?
Thank you.