A method for controlling an active power filter using neural networks is presented. Currently, there increase of voltage and current harmonics in systems, caused by nonlinear loads. The filters (APFs) are used to compensate the generated correct load factor. proposed control design a pulse width modulation (PWM) with two blocks that include networks. Adaptive estimate reference compensation currents. On other hand, multilayer perceptron feedforward network (trained backpropagation algorithm)...

Backstepping controllers are obtained for distributed hybrid photovoltaic (PV) power supplies of telecommunication equipment. Grid-connected PV-based supply units may contain dc-dc buck-boost converters linked to single-phase inverters. This energy resource operated within the self-consumption concept can aid in peak-shaving strategy ac smart grids. New backstepping control laws inverter and converter feeding a telecom equipment/battery while sourcing PV excess grid or system. The approach...

For three-phase four-wire circuits, two compensation criteria have been established: one based on the instantaneous value concept and other average concept. Thus, according to non power current is reduced, without altering active power. According concept, nonactive average-current When zero-sequence voltage component exists, both types would not enable (neutral) source elimination. Then, approaches are marked in this paper. The first for eliminating or but neutral can still flow. second...

Nowadays, the proliferation of distributed renewable energy sources is a fact. A microgrid good solution to self-manage generation and consumption electrical loads from point view consumer as well power system operator. To make versatile necessary carry that out, flexible inverter necessary. In this paper, an algorithm presented control it complete work in grid-connected isolated modes, injecting or receiving grid always compensating harmonics generated by microgrid. With inverter, can while...

This paper presents a comparative analysis of control methods to extract the maximum power and track point (MPP) from photovoltaic (PV) systems under changeable environmental conditions. The PV system consists solar module DC/DC converter, in this case buck-boost connected load. tracking (MPPT) algorithms compared are perturb observe (P&O) method, PI control, neuro-fuzzy fuzzy technique finally backstepping control. parameters considered for comparison efficiency MPPT algorithm taking into...

AbstractThis work presents a new control method to track the maximum power point of grid-connected photovoltaic (PV) system. A backstepping controller is designed be applied buck-boost DC-DC converter in order achieve an optimal PV array output voltage. This nonlinear based on Lyapunov functions assuring local stability Control reference voltages are initially estimated by regression plane, avoiding and adjusted with modified perturb observe (P&O). Thus, extraction generating system...

Electric power quality is becoming more critical with time because of the increasing use electronic devices in all areas society: industry, household, etc. Many kinds disturbances can be produced grid due to external or internal causes, such as, for example, switching operations. Among them, distortion and imbalance are long-term disturbances, which makes them very dangerous electric equipment. In addition, identification and/or sources quite difficult they instantaneously scattered by grid....

Voltage unbalance is one of the main problems in electric distribution systems. The standards limit level voltage a specific point without considering agent network that produces it. Nevertheless, identification responsible for system may be very important, example, to establish most suitable procedure mitigate To do that, new index, denominated current ratio, proposed this paper. It based on decomposing actual at input load three components: first required by an unbalanced linear load,...

Today, there is an increase of harmonic pollution in electrical systems due to the use nonlinear loads. Thus, current and voltage waveforms are nonsinusoidal. The active power-line conditioners (APLCs) used compensate generated harmonics correct load power factor. In this paper, a new APLC control design based on artificial neural networks developed. Adaptive estimate reference compensation currents, feedforward network (trained by backpropagation algorithm) implements pulsewidth-modulation...

The original instantaneous reactive power or p–q theory has been used in a systematic way the control of active filters (APFs). When APF is switched parallel to nonlinear and unbalanced load, application allows constant compensation strategy. This means that after connection, supply presents same value as load average power. use other strategies such unity factor, sinusoidal balanced currents, among others, also possible, development another strategy possible within frame. A reformulation...

This paper presents a Photovoltaic Active Power Line Conditioner, device designed to extract the maximum power of photovoltaic (PV) system and compensate nonlinear unbalanced loads electrical systems. The grid-connected PV systems require DC-DC DC-AC converters maximize generated inject an AC current network. In this work, neuro-fuzzy achieve Maximum Point (MPP) fuzzy logic control loop ensure Tracking (MPPT) connected at DC side are designed. converter strategy includes active compensation...

Grid-connected photovoltaic (PV) systems are designed to provide energy the grid. This transfer must fulfil some requirements such as system stability, power quality and reliability. Thus, aim of this work is design control a grid-connected PV via wireless guarantee correct operation system. It crucial monitor supervise and/or detect faults in real time remote way. To do that, DC/DC converter DC/AC controlled wirelessly, reducing costs cabling installations. The used methods sliding for...

A new design method for the control implementation of a combined series-shunt active power filter (load compensation conditioner, LCAC) electrical quality improvement is proposed. This conditioner allows to cancel source voltage harmonics, symmetrize supply voltage, and eliminate current harmonics reactive/unbalanced load currents. The study higher passive filtering behaviour has permitted an enhancement compensating performance conditioner. Practical case results are presented support design.

A new control method for active power filters (APF) using neural networks is presented. It pulse width modulation (PWM) designed with two blocks that include networks. The first one includes adaptive estimate the reference compensation current; linear neurons (Adaline) were used. second a feedforward network works as hysteresis band comparator; this multilayer and it has been trained by backpropagation algorithm. practical case Matlab-Simulink presented to check proposed performance.

An efficient monitoring and control system for solar photovoltaic modules, which combines the use of a non-linear MPPT backstepping controller with custom wireless sensor network (WSN) has been developed. The infrastructure consists smart (WSPS) centralized (WCC). data sensing, coordination is handled by using WSN based on IEEE 802.15.4 technology in beacon enable mode guaranteed time slot. This assures transmission synchronous acquisition, are critical elements system. All measured gathered...

The solar photovoltaic industry is booming and the achievement of high efficiency in this kind systems crucial. Partial shading conditions complicate search maximum power point (MPP) installations due to existence multiple peaks P-V curve. In addition, these (PV) require monitoring control real-time guarantee correct operation. Thus, paper proposes a novel system track through artificial vision, under partial controlled monitored by wireless sensor network based on IEEE 802.15.4 technology....