Control strategies of selective harmonic current shunt active filter

Constant Frequency Hysteresis Current Control of Shunt Active Filter

Comparison of Current Control Strategies for Three- level Four-leg Shunt Active Power Filter

This paper presents a comparison of two control strategies for 3-level 4-leg Shunt Active Power Filter (SAPF). The first method is based on hysteresis controllers. The second, proposed method is the Model Predictive Control (MPC) with a finite control-states set (FS) based on phase-to-phase model. The two methods are described and simulation results are presented and analyzed. Comparison is per...

Hysteresis Control for Current Harmonics Suppression Using Shunt Active Filter

Recently wide spread of power electronic equipment has caused an increase of the harmonic disturbances in the power systems. The nonlinear loads draw harmonic and reactive power components of current from ac mains. Current harmonics generated by nonlinear loads such as adjustable speed drives, static power supplies and UPS. Thus a perfect compensator is required to avoid the consequences due to...

Selective Active Filter with Remote Harmonic Distortion Control

This paper presents the calculation methods for the different filtering blocks of a selective active filter in order to minimize the active filter inverter size, keeping the harmonic emissions at the limits stated by the applicable regulations. Since it may be necessary to comply with the regulations at a remote place with respect to the active filter location, the method has been extended to t...

Investigation of Harmonic Detection Techniques for Shunt Active Power Filter

Active power filters are used to eliminate current harmonics of non-linear loads. This paper evaluates three different methods of determining the compensating current for a shunt active filter that is working under nonsymmetrical conditions. The paper compares the instantaneous reactive power theory, the synchronous reference frame theory and fast Fourier transform techniques. The comparison is...