CPC H02J 3/01 (2013.01) [H02J 3/1842 (2013.01)] | 20 Claims |
1. A power system comprising:
at least one three-wire active harmonic filter (AHF) configured to be coupled to, and provide compensation current to, a three-phase load;
at least one four-wire AHF configured to be coupled to, and provide compensation current to, the three-phase load; and
a controller configured to
determine a total compensation current to provide to the three-phase load, the total compensation current including a zero component and a non-zero component;
determine an output capacity of the at least one three-wire AHF and the at least one four-wire AHF;
calculate a current-compensation ratio based on the output capacity of the at least one three-wire AHF and the at least one four-wire AHF; and
control the at least one four-wire AHF to provide at least a portion of the non-zero component of the total compensation current to the three-phase load based on the current-compensation ratio.
|