The Three-Phase Generator

The generators of our power supply are built in such a way that they are producing three alternating currents at the same time. The stator contains 3 coils, they are stagged at 120° and the magnet moves past the 3 coins with each full turn and induces three alternating currents, the three-phase current. Its phases differ at 120° towards each other.

Mind that the total sum of the 3 alternating currents is zero at each time.

There are two possibilities to connect with the three-phase power supply system:

R - N, S - N and T - N

_eff

R - S, S - T and T - R

_eff

The temporal changing voltage at the connections R - S is the difference of the voltages at R - N and at S - N. (The others analogous.)

It's functional to use the same formula to calculate the electric power of direct current and alternating current. Therefore we define the effective value:
The effective value of the voltage is the average of the voltage of half a period. From there is valid:

U_S= Peak value of the voltage.

Last changes: 2002/12/05