A method and apparatus are described for controlling the flow of power in
each input line to a three phase AC inductive load in order to reduce the
amount of VAR in the system, and thus increase the operational efficiency
of the inductive load. Solid state relays are positioned in series in
each of the three inductive load line inputs, and current allowed to flow
to the inductive load only during the time during which the SSRs are in a
conducting state. The calculation of VAR is achieved by processing data
from each of the input lines using a separate controller boards each
dedicated to each of the lines. The controller in turn, based on the
calculated VAR, increments the time, either increasing or decreasing it
from a predetermined value, during which the SSRs in that line remains in
the non-conducting state.