HOW TO CONTROL ACTIVE POWER FILTERS FOR HARMONIC VOLTAGE MITIGATION IN MULTIBUS INDUSTRIAL POWER SYSTEMS

摘要

The effectiveness of the bus voltage and branch current detection control strategies of the APFs used in multibus power systems is analysed and compared. The multiple harmonic optimization problem for both the control methods is formulated in such a way that for the whole selected range of harmonics a single control gain is searched. The obtained results are not far from those achieved by the application of the repeated solution of the single harmonic problem, which represents the most effective way to suppress the node voltage harmonics, but it is rather difficult to realize, except the cases where only a few voltage harmonics should be compensated for.