This paper presents a flexible control technique for power electronics converters, which can function as an active filter, local supply interface, or perform both functions simultaneously. Thus, it compensate current disturbances while simultaneously injecting into the electrical grid, transforming converter multifunctional device. The main objective is to use all capacity available in electronic maximize benefits when installed electricity grid. achieved by using orthogonal decomposition of...

This study discusses a centralized and coordinated control of distributed multifunctional inverters connected to an electric grid. The operation is based on the conservative power theory, which makes it possible identify undesired current components that can be compensated. make up microgrid are managed through transmission protocol/internet protocol (TCP/IP) communication network, allowing commands from center, while also monitoring gauging electrical quantities interest related each...

Human infection with fish parasites can result from the ingestion of incompletely cooked or raw fish, giving origin to parasitic diseases such as anisakiasis, caused by Anisakidae family. The present study assessed in vitro larvicidal effect two monoterpene compounds, geraniol and citronellal, against Contracaecum sp (Nematoda: Anisakidae). Four hundred live larvae obtained 'traíra' (Hoplias malabaricus, Bloch, 1974) were analyzed on 40 Petri dishes (10 each) compounds be tested. final...

This work deal with multi-functional use of electronic power converters as interface between utility grid and local sources. The Conservative Power Theory is used to simultaneously injecting into the performing selective disturbance compensation.

An improved distributed control strategy for imbalance and harmonic sharing in 4-leg droop controlled power converters 3-phase 4-wire isolated Microgrids is presented this letter. The proposed scheme improves a previous one by some of the authors letter sense that both negative zero current sequence components are independently controlled. A numerical comparison between method [1] shows that, studied case, powers shared among using are: 1638 VA, 2309 1760 2610 VA 1344 (these unequally...

This paper discusses the necessity of reviewing some traditional quantities used for qualifying electrical load properties. In scenario smart micro-grids and distributed generation, use relative quantities, as power factor current total harmonic distortion, can lead to misinterpretation behavior. The article presents numeric examples demonstrates wrong conclusions that derive from such especially in case an consumer unity is also energy producer, what leads importance electricity standards codes.

Provision of ancillary services, like power quality improvement is a key to attain higher utilization multifunctional grid-tied inverter. However, the mainly limited by capacity This paper explores integration issues next-generation intermittent sources. In particular, two different strategies for enhancing given residual inverters are developed. One strategy aims obtain expected exploiting dynamic saturation inverter rated apparent and another based on peak current detection. Both offer...

The increasing penetration of renewable energy sources is pushing low-voltage electrical grids to become predominantly power electronic-based. Consequently, the design and operation related grid-connected converters must be achieved under proper manner, in order maintain stability support reliable entire system. Thus, this work presents modeling control a single-phase multifunctional converter, which operates as current-controlled voltage source inverter using an LCL-type output filter. An...

This paper introduces a novel control strategy for multifunctional grid-tied inverters in industrial/commercial power systems, aiming to address the compensation of instantaneous oscillations. The proposed is derived from Conservative Power Theory, which offers ability extract and analyze oscillating terms directly <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">abc</i> frame. To demonstrate efficacy strategy, simulation results are...

This paper presents a resonant converter for ozone generation developed corona discharge processes. The switching frequency is adjusted near the series resonance between leakage inductance of transformer and equivalent capacitance cell, allowing high efficiency, due to power factor switches soft-switching. Power regulation provided by Pulse Density Modulation - PDM. As voltage source inverter it necessary limit instantaneous current its average value in order avoid saturation high-voltage...

This paper proposes an architecture of digital current regulator intended to be used control the power supplies new Brazilian synchrotron light source, called Sirius. It is based on a high-precision Digital Analog Converter and modern System Chip device, which has capability performing realtime tasks together with managing interface tasks. Despite this system will many kinds supplies, it was validated in 100 W supply, previously developed present Synchrotron Light Source.

In this work the functionalities of Power Electronic Converters (PEC) used as grid interface device for distributed generation sources are extended to deal with Quality (PQ) issues. It is proposed an alternative strategy obtain current references based on Conservative Theory (CPT). The contributes full exploitation PEC power capacity, allowing act a multifunctional performing simultaneously selective compensation PQ issues and injection into utility grid. Streszczenie. Elektroniczny...

Active and reactive power regulation, unbalanced current compensation, harmonic mitigation are the most significant functionalities typically embedded to a three-phase multifunctional grid-connected inverter. However, vital control feature minimally addressed in literature is capability adjust grid factor minimum value required by standards or codes. Hence, this paper presents an adaptive compensation approach perform dynamic regulation under varying demand unpredictable energy generation,...

This article proposes a graphical method to evaluate the feasibility of intentional islanding distributed synchronous generators. The approach is based on combination performance and restriction curves. These curves are detection capability frequency-based protection at point common coupling generator its terminals. When relating time, time active power imbalance, intersection such defines two operating zones: i) favorable island formation zone, in which operation energized stable, ii)...

Modern electrical systems are required to provide increasing standards of power quality, so converters in microgrids need cooperate accomplish the requirements efficiently terms costs and energy. Currently, quality compensators (PQCs) deployed individually, with no capacity support distant nodes. Motivated by this, this paper proposes a consensus-based scheme, augmented conservative theory (CPT), for controlling clusters PQCs aiming improve imbalance, harmonics factor at multiple nodes...

This work presents a technique to allow the use of single-phase power converter tied grid utility both as active filter (APF), mitigating quality disturbances due load, and distributed generation (DG) interface, connecting local renewable source into grid. The main goal is ensure that processed by electronic (PEC) lower than its rated power, contributing increasing lifetime safety converter. load current decomposed, using Conservative Power Theory, in components related non-active consumed...

AC power conditioners in electric systems have been extensively explored the literature based on approaches mainly focused single- and three-phase wiring topologies, remaining a significant gap regard to applications suitable for two-phase three-wire circuitry. Therefore, this work demonstrates that Conservative Power Theory can be employed generate proper reference signals an active filter networks. This methodology allows selectively synthesize flexible manner, providing reactive...

This paper explores the application of multifunctional inverters connected to electrical network, propose an adaptable system individually control reactive power, load imbalance, and harmonic currents. Based on Conservative Power Theory (CPT), dynamic compensation Quality (PQ) indices is carried out under different conditions demand energy generation. First, a set global factors for imbalances, current harmonics introduced, which are effective even bidirectional power flows in systems with...

This paper proposes a consensus-based distributed control scheme, augmented by the conservative power theory for compensating imbalance and harmonics at Common Connection Point (PCC). The consensus algorithm allows to achieve effective coordination among grid-following converters; whereas is used compute unwanted currents powers connection point that should be compensated via remaining volt-ampere (VA) capacity of each converter. mathematical formulation proposal, along with its validation...

Discussions on the different methods for sharing responsibilities regarding harmonic distortions in power grids have received wide attention area of quality. This paper proposes a methodology based Conservative Power Theory (CPT) responsibility assignment due to voltage present at point common coupling. First, theoretical basis analyzing orthogonal current decomposition CPT under non-sinusoidal conditions is presented. Next, using frequency domain, introduced separate contributions CPT's...

VSI are largely used as grid interface device for DG sources. Extra features have been added to the converters, mainly deal with power quality issues, configuring its use a multi-function device. In general, converter acts when source is supplying energy and conditioner inactive. this paper able simultaneously operate both APF between source. Also it possible solely or an interface. No synchronization voltage required, contributing simplicity of proposed strategy. A single-phase system...

This work proposes a novel secondary control system based on the Consensus algorithm for balancing RMS current between distributed generation (DG) phases in four-wire isolated Microgrid (MG) containing unbalanced and non-linear loads. The strategy using droop per phase to regulate voltage magnitude, whereas harmonic sharing is performed virtual impedance concept. Additionally, proposed scheme guarantees regulation, causing MG operate at its nominal value. In addition value of current,...