Performance evaluation of reference current extraction methods for hybrid active power filter

Abstract

Active power filter (APFs) has been used to mitigate the harmonic pollution in an electrical network. Reference current estimation is an important part for control of an active power filter. In any inaccuracy in generation of reference current, it yields to poor compensation in load current harmonics. This paper deals with five types of time domain control techniques for real time compensating current for shunt hybrid active power filter. This work also reveals the advantages and disadvantages of the practiced control strategies. The five strategies are analyzed and compared in terms of their performance under balance source and balance load conditions. The comparison and effectiveness of all the methods are based on the theoretical analysis and simulation results obtained with MATLAB/SIMULINK power system block set employing in a three phase three wire network. Here, a three phase six pulse rectifier with R-Load is considered as a nonlinear load.

DFPI-based Control of the DC-bus Voltage and the AC-side Current of a Shunt Active Power Filter

“…Each one among the aforementioned blocks should be accurately designed to avoid poor compensation of the harmonic currents. One can find numerous techniques of regulation and reference signals extraction in the literature [11][12], [13][14][15]. Furthermore, investigation on more sophisticated techniques constitutes a field of a great interest.…”

A comparative analysis of DFPI correctors and different techniques to regulate a shunt active power filter

“…They are based essentially on very sophisticated semiconductor components which are fully controlled. However, shunt active power filters (SAPFs) can compensate for reactive power and thus ensure a nearunity power factor (Steela and Rajpurohit, 2014;Dey et al, 2013;Vardar and Akpinar, 2009). The principle of SAPFs is based fundamentally on the generation of currents in opposing phase with the harmonic currents generated by the nonlinear loads in order to ensure a fundamental sinusoidal current on the distribution network side (Demirdelen et al, 2013;Khadem et al, 2011;Moran et al, 1995).…”