Abstract
A new theory of instantaneous reactive power compensation on three-phase power systems is proposed. The validity of the proposed theory is demonstrated by the simulation and experimental results.
The proposed theory is based on a new concept, that is, a three dimensional cross vector which is newly proposed and defined in this paper. The three dimensional cross vector is the cross product of a voltage space vector and a instantaneous current space vector on three-dimensional rectangular coordinates. And an instantaneous reactive current space vector is easily detected by using the three-dimensional cross vector.
Therefore, the proposed theory does not use any coordinate transformations, such as a rotating coordinate transformation or a three-phase to two-phase coordinate transformation. Hence, the instantaneous reactive power compensation system based on the proposed theory in this paper is essentially simpler than any conventional reactive power compensation system based on such coordinate transformations.
