Application of passivity-based control in active power filters
Abstract：When the parameters of the line and load in APF are uncertain or unknown, the system may be unstable. Inorder to solve this problem, the passivity-based control (PBC) was applied to the active power filters (APF). The work con-centrated on the compensation strategies. The APF and the nonlinear load were considered as a whole. By simplifying the circuitof the APF by Norton equivalent, the system model on dq axes was built. The load voltage and the supply current were takenas the state variables of the system and the compensating current as the control variables. The passivity of the system wasdemonstrated. The control law, which is the reference compensation current, was deduced by the passivity approach. Thoughthe theory was complex, the control law obtained by the passivity-base control was very simple. Some simulations are conductedwith various loads, and the results indicate the stability and robustness of the PBC.
Keywords：harmonicsactive power filterpassivity-based control
Publication Date：2003-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 713-718 )