Actually there are two possible answers. No 1: Kirchhoffs current law. If the neutral does not conduct current the sum of the three phase currents must be zero. No 2: Open Excel (or another calculating programm of your choice). Create three sine functions with phase shifts ph1=0°, ph2=-120°, ph3=-240° Now add these three sine waves. You will find: at any angle/time the sum of these three is zero. Enjoy ... :)
Hey 👋 Thanks for your Answer. Yes we will get zero if we add three current vector separated by 120 degree but then why are we getting a resultant vector here for voltage with an amplitude of 1.5 when they are also separated by 120 degree.
This is an addition of vectors with 120° shifted to each other. In that case we get a rotating vector at constant length. Why is that? My favorite explanation is that these three voltages are the result of a rotating permanent magnet. The voltages are the "footprint" of this magnet. As often in physics you can reverse this result. Now, if you apply these three voltages to three coils (like those previously picking up the magnetic field) these coils now recreate the magnetic field, which is rotating and constant. :-)
have to say such a clear concept. Thank you this channel is really under rated keep up the good work
Sehr gut
I would watch all of your videos - if they were in English! :P great job btw., really enjoying these.
Thank you. There will be more videos in English, but not all ... .-)
You said it very nice way . Well done
Thank you. Actually the speaker in this video isn't me ... :-)
So beautiful !!!
Most Impressive, 🌎🌏🔍⚡️ 📡 👍👍👍👍🤗🤗✌
goddamn. that was beautiful
Thank you. That's very kind.
grass, dass ihr auch Englisch Version habt
I'm really confused here. Why do we say that the sum of all currents in a balanced system is zero.
Actually there are two possible answers.
No 1: Kirchhoffs current law. If the neutral does not conduct current the sum of the three phase currents must be zero.
No 2: Open Excel (or another calculating programm of your choice). Create three sine functions with phase shifts ph1=0°, ph2=-120°, ph3=-240°
Now add these three sine waves. You will find: at any angle/time the sum of these three is zero.
Enjoy ... :)
Hey 👋
Thanks for your Answer.
Yes we will get zero if we add three current vector separated by 120 degree but then why are we getting a resultant vector here for voltage with an amplitude of 1.5 when they are also separated by 120 degree.
This is an addition of vectors with 120° shifted to each other. In that case we get a rotating vector at constant length.
Why is that?
My favorite explanation is that these three voltages are the result of a rotating permanent magnet. The voltages are the "footprint" of this magnet. As often in physics you can reverse this result.
Now, if you apply these three voltages to three coils (like those previously picking up the magnetic field) these coils now recreate the magnetic field, which is rotating and constant. :-)