-This paper Discuss about the problem occurring in the medium voltage distribution network such problems reactive power, harmonics and unbalanced load current compensation of Medium voltage Distribution systems. It proposes a simple and inexpensive solution to enhance power quality when a particular connection to the high voltage transmission network. It presents the design of a active power fi...

Active power filter (APF) has now become a mature technology for harmonic and reactive power compensations in two-wire (single phase), three-wire (three phase without neutral), and four-wire (three phase with neutral) ac power networks with nonlinear loads. This paper presents a study on three different adaptive algorithms for active power filtering applications. These algorithms are adaptive l...

K E Y W O R D S This paper describes an active power filter (APF) control strategy, which eliminates harmonics and compensates reactive power in a three-phase four-wire power system supplying non-linear unbalanced loads in the presence of non-linear non-stationary currents. Empirical Mode Decomposition (EMD) technique developed as part of the Hilbert-Huang Transform (HHT) is used to singulate t...

A sliding mode control (SMC) strategy with a fractional-order scheme is developed to provide an effective way compensate for the harmonic current and strengthen performance of active power filter (APF). The formulation controller (FOSMC) incorporated in APF system, obtaining extra degree freedom over integer-order ones improve dynamic property. simulation results utilizing designed confirm sati...

In this paper, a model reference adaptive sliding mode (MRASMC) using a radical basis function (RBF) neural network (NN) is proposed to control the single-phase active power filter (APF). The RBF NN is utilized to approximate the nonlinear function and eliminate the modeling error in the APF system. The model reference adaptive current controller in AC side not only guarantees the globally stab...

One-cycle control (OCC) is a kind of nonlinear control technology. It is the most advanced reactive power compensation and harmonic suppression method. In the paper, a three-phase four-wire active power filter (APF) with one-cycle control is presented. This method does not need any measured quantities of three-phase input voltages and three-phase load currents, and also not need multipliers. Th...

The main aim of this project is ,this topology enables UPQC to have a reduced dc-link voltage without compromising its compensation capability. Three-phase, four-wire unified Power Quality (UPQC) to improve power quality. The UPQC is realized by the integration of series and shunt active power filters (APF) sharing a common dc bus capacitor. The realization of shunt APF is carried out using a t...

This paper is proposed to reconsider the development of active power filter (APF) technologies that are routinely utilized to mitigate harmonics in utility power lines. This reconsider can furthermore be considered as a “tutorial-type paper” as it provides a holistic coverage of the APF technologies by omitting the tedious details, but without losing the major essence of the subject matter. It ...

This paper deals with an indirect current controlled shunt active power filter (SAPF) for improving power quality by reactive power compensation and harmonic filtering. The presence of harmonics and reactive power in the power source because it will cause additional power losses and malfunctions. The proposed APF is based on a voltage source inverter (VSI). The VSI is controlled by two loops, t...

In this paper, based on a benchmark the performance of Unified Power Quality Conditioner (UPQC), improvement is presented comparatively by using Proportional Integrator (PI)-type controllers optimized Grey Wolf Optimization (GWO) computational intelligence method, fractional order (FO)-type differential and integral calculus, PI-type controller in tandem with Reinforcement Learning—Twin-Delayed...