As a result of this successful field trial, three-phase current became established for electrical transmission networks throughout the world.

The dqo transform applied to three-phase currents is shown below in matrix form:

The small-scale model of the hydro-energetic system with three-phase currents placed in this room demonstrates all the essential elements of this invention.

Vector control implementations usually assume ungrounded motor with balanced three-phase currents such that only two motor current phases need to be sensed.

In Fig. 4.2, for example, the three-phase currents are quickly established at the maximum value because the phase winding time constants (1 ins) are much shorter than the period of each excitation (20 ms at a speed of 50 steps per second).