This paper presents a new control method for simultaneous compensation of instantaneous reactive power and current harmonics by parallel active filters (PAFs). Reference compensating currents of PAF are calculated using the subtraction of instantaneous power from its average value. In this way, it is possible omitting high/low pass filter(s) from the control circuit of PAF, which usually result...

Solid rotor alternator is of great importance at high ratings for generation of electric power as they can with stand huge centrifugal forces developed in the alternator. When a non liner load is connected to such an alternator network it invariably injects harmonics into the system which becomes a power quality issue. In order to compensate for the harmonic content a shunt active filter is con...

This paper presents a new three-phase hybrid active power filter configuration that interconnects a passive high-pass filter in parallel with an active power filter and a photovoltaic system. The proposed configuration can improves the filtering performance of the conventional active power filter, as well as simultaneously supply the power from the photovoltaic arrays to the load and utility. T...

This paper presents the analysis of four leg voltage source inverter (VSI) used as an active filter (AF) for reactive power compensation, load balancing, harmonic elimination and neutral current compensation in three-phase four-wire non-linear loads. A variable structure control (VSC) over the average dc bus capacitor of the AF is employed for the control. A hysteresis rule based carrierless pu...

Abstract In this paper, a three-phase shunt active power filter (SAPF) controller with fully digital implementation is presented. The main goal of contribution to implement direct control (DDPC) algorithm without phase-locked-loop (PLL) for SAPF. This intended quality improvement and current harmonic elimination. introduced in paper cost-effective, has fast-dynamic response, simple hardware imp...

This paper describes the application of a new fuzzy based control strategy to a three-phase shunt active power filter for harmonics minimization and reactive power compensation required by a variable non-linear load. To improve dynamic behaviour of shunt active power filter and make it robust under wide range of load variations, the value of load current is considered as an input of fuzzy contr...

The increasing use of power electronic based loads (adjustable speed drives, switch modern power supplies, etc) to improve system efficiency and controllability is increasing concern for harmonic distortion levels in end use facilities and on overall power system. The Active Power Filter uses power electronic switching to generate harmonic currents that cancel harmonic content from non – linear...