An adaptive repetitive controller based on generic internal model for active power filter in variable-frequency power system
GAO Feng
LIN Hui
Abstract：To improve the current control of shunt active power filter (APF) in a variable-frequency power grid, we develop a generic internal model and build a repetitive controller based on this internal model. According to grid conditions or loads, this repetitive controller can adjust the dynamic response time and the compensation range through p and two coordinate transformations to guarantee the effective compensation for different harmonic sources and changing load status. It can also adapt to changes in a wide range of grid frequencies due to the introduction of its adaptive period parameter. To compensate for the dynamic delay in the repetitive controller, we form the composite control system by shunting the repetitive controller with a proportional controller. The major characteristics of this composite system are given. In the shunt APF system of an aircraft variable-frequency power grid, we perform simulations for the proposed repetitive control method and the other four existing control methods, and compare their simulations results. Simulation and experimental results confirm the validity and superiority of the proposed repetitive controller over other controllers.
Keywords：aircraft power gridvariable-frequency systempower qualityactive power filtersrepetitive control
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 725-734 )