| Abstract |
In this paper, two methods for current control of multiphase systems are proposed. They are similar to
the synchronized on-off control, where phase currents (or the current space vector) are sampled and
compared to the reference currents. Depending on the difference sign, a transistor that would
decrease the error is switched on. Unlike with the latter method, in our approach the current at the
end of the interval and the corresponding current error are predicted. In the first approach either null
voltage vector or the vector pointing in approximately the same direction as the current error vector is
selected, depending on which one gives the smaller error. In the second method, the switching time
for an optimal voltage vector is calculated following a least square error equation. |
