| Abstract |
In three-phase four-wire systems, two compensation criteria are possible. One exclusive of the threephase
circuits, is based on the instantaneous value concept. It consist in eliminating the non
instantaneous power current without altering the instantaneous real power. Another, is based on the
average value concept and the non-active average-current is reduced, without altering the average
power. When the zero-sequence voltage component exists, both compensation criteria would not
enable the zero-sequence (neutral) source current elimination. Then, two approaches are marked in
this paper. The first one is for eliminating the non instantaneous power current or the non-active
average-current but the neutral current can still flow. The second one for eliminating the modified non
instantaneous power current or the modified non-active average-current, thus the neutral current
component is compensated. According to recent recommendations in this work three-phase systems
are considered as four-conductor systems. Finally, experimental results to prove the compensation
strategies are obtained. |
