Power quality issues are becoming a major concern of today's power system engineers. Shunt active power filter (SAPF) is one of the effective means for harmonic current compensation in electrical power system. The performance and dynamic characteristics of a three-phase SAPF with a simple control algorithm is presented and analyzed in this paper. This algorithm operates at fixed switching frequ...

In this paper, a refined reference current generation algorithm based on instantaneous power (pq) theory is proposed, for operation of an indirect current controlled (ICC) three-level neutral-point diode clamped (NPC) inverter-based shunt active power filter (SAPF) under non-sinusoidal source voltage conditions. SAPF is recognized as one of the most effective solutions to current harmonics due ...

Electric arc furnace (EAF) is one of the responsible cause for deteriorating power quality in the distribution network by, introducing harmonics, propagating voltage flicker and causing unbalance in voltages and currents. This paper presents performance evaluation of composite filter (CF) for power quality improvement of EAF distribution network. The performance of CF is evaluated in terms of h...

Conventional hysteresis current controllers have the disadvantage of a variable switching frequency. This paper proposes a fuzzy hysteresis band technique for the current control for shunt active power filter (SAPF). An active harmonic filter is used to eliminate current harmonics caused by nonlinear loads. The current control strategy utilizes using a selective Filter STF method to improve pow...

A shunt active power filter (SAPF) is coupled with load admittance in weak grid conditions, which poses a challenge to stability analysis. In this article, the model of SAPF developed, reveals coupling mechanism between and concisely accurately. On top that, region system investigated. The passivity guarantee first explored. However, has very narrowband at specific frequency, makes it difficult...

Power Quality means maintaining purely sinusoidal current wave form in phase with a purely sinusoidal voltage wave form throughout in a power system. Due to intensive use of power converters and other non linear loads in industries, an increasing deterioration of the power system voltage and current waveforms has been observed. The most important cause for degrading power quality are harmonic d...

High source current harmonics is a major problem faced by Electrical Engineers in power systems. Shunt Active Filter is a popular device in FACTS family generally used to reduce the source current harmonics. The non linear loads in a multi bus system demand reduction in the harmonics so that the line losses and heat can be reduced. The objective of this work is to reduce harmonics in the lines....

The low harmonic distortion and reduced switching losses are the advantages of using multilevel inverter. For this purpose, three-level inverter is used in paper as a three-phase four-leg shunt active power filter (SAPF). SAPF to eliminate current compensate reactive current, balance load currents under an unbalanced non-linear load. A fuzzy logic controller self-tuning filters (STF) control (A...

this paper presents a novel control approach used in shunt active power filter based on variable structure control combined with random pwm technique (rvsc) that provides robust, fast, and more favorable performance for active power filter. this control strategy is compared with two other strategies to show the effectiveness of the introduced methods; pulse width modulated proportional-integral...

Shunt Active Power Filters (SAPFs) represent the most important and widely used filter in industrial purposes due to the fact that, they not only eliminate the harmonic current with a neglected amount of active fundamental current supplied to compensate system losses, but also they are suitable for a wide range of power ratings. One of the key issues for a proper implementation of an active fil...