<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> Strategies for extracting the three-phase reference currents shunt active power filters are compared, evaluating their performance under different source and load conditions with new IEEE Standard 1459 definitions. The study was applied to a four-wire system in order include imbalance. </para>

The main design objective of photovoltaic (PV) systems has been, for a long time, to extract the maximum power from PV array and inject it into ac grid. Therefore, point tracking (MPPT) uniformly irradiated maximization conversion efficiency have been issues. However, when plant is connected grid, special attention be paid reliability system, quality, implementation protection grid synchronization functions. Modern plants are required maximize their energy production, requiring suitable...

Electrification has been a key component of technological progress and economic development since the industrial revolution. It improved living conditions, spurred innovation, increased efficiency across all sectors our economy aspects lives. During coming decades, electrification is expected to reach further deeper into transportation, building, industry sectors, mainly motivated by energy transition zero-carbonemission-based mitigate climate change.

This study presents a novel three‐level neutral‐point‐clamped quasi‐Z‐source inverter in the single‐stage buck‐boost multilevel family. The topology was derived by combining properties of network with those neutral point clamped inverter. It features such advantages as low voltage stress switches, power conversion, continuous input current, short‐circuit withstandability and total harmonic distortion output current. authors present steady state analysis along special modulation technique to...

Impedance-source networks are an increasingly popular solution in power converter applications, especially single-stage buck-boost conversion to avoid additional front-end dc-dc converters. In the survey papers published, no analytical comparisons of different topologies have been described, which makes it difficult choose best option. Thus, aim this paper is present a comprehensive comparison impedance-source-based inverters terms passive component count and semiconductor stress. Based on...

Large photovoltaic (PV) plants are being built all over the world, commonly having ratings up to 1 MW and reaching level of 250 MW. These could be an alternative energy source, replacing conventional sources solving humanity?s dilemma. However, associated electronic systems, mainly inverters used for interfacing with grid, have solve some problems related operation in electric distribution system. They should reliable, robust, manageable. This article presents discusses most critical points...

Integration of renewable energy sources, active role consumers, and management systems is currently among research priorities in systems. This paper proposes an innovative coordinated scheduling for a microgrid neighbor prosumers with different consumption patterns. All have photovoltaic generation systems, Li-ion batteries as storage regular household loads. A genetic algorithm used to schedule each prosumer's battery charge/discharge, the aim reducing exchange losses by minimizing power...

This paper presents a modified carrier level-shifted based control method for pulsewidth modulation controlled three-phase three-level T-type quasi-impedance-source inverter. The benefits of the proposed strategy are uniform distribution shoot-through states constant width throughout fundamental period and mitigation inner capacitors' voltages imbalance. latter is achieved by means proportional-integral controller, which adjusts relative time application redundant states. improved...

Microgrids of prosumers are a trendy approach within the smart grid concept, as way to increase distributed renewable energy penetration power systems in an efficient and sustainable way. Single prosumer individual management has been previously discussed literature, usually based on economic profit optimization. In this paper, two novel approaches proposed: firstly, different objective function, relative mismatch between generated demanded power, is tested compared classical function price,...

This paper summarizes the state of part discussions in CIGRE/CIRED/IEEE joined working group C4.24, especially where it concerns supraharmonics. There is an increasing interest from international smart grid standard-setting community knowledge about harmonics distortion frequency range 2 to 150 kHz, referred as The presents measurements waveform several illustrative installations and loads. reduction emission lower-frequency ranges appears result increase supraharmonic by equipment. Power...

This article presents a new modulation technique called three-dimensional sigma–delta (3D-ΣΔ) for high-frequency three-leg four-wire voltage source converters (VSCs) that use wide-bandgap (WBG) semiconductors. These WBG devices allow the of high switching frequencies with greater efficiency than silicon devices. The proposed 3D-ΣΔ enables operation at variable frequency, resulting in significant reduction losses compared to classical pulse-width (PWM) techniques. Moreover, uses...

This paper presents a new topology for the power injection system that is based on parallel association of two voltage source inverters. One operates using quasi-square waveform strategy, and other with pulsewidth-modulation (PWM)-based strategy. The aims this are to inject from photovoltaic generation inverter control current quality PWM inverter. proposal optimizes design, permitting reduction losses an increase energy injected into grid.

A novel multiconverter conditioner topology and its control stage are proposed in this paper. It is formed by an active parallel with a hybrid composed of filter series one or more passive filters. This allows the reduction inverter ratings, constituting effective solution at high-power levels. Collaborative strategies developed for new topology, which share compensation objectives between two converters. These tracking techniques based on estimating load current, achieving algorithms number...

A three-phase battery charger for electric vehicles is proposed in this paper. The bidirectional, allowing the Charging and Vehicle to Grid operation modes. novel Balanced Sinusoidal Source Current control strategy so that demands or injects into grid a perfect sinusoidal balanced source current phase with positive sequence fundamental component of phase-to-neutral voltage, achieving unity displacement power factor. In way, turns car smart vehicle, reducing existing problem harmonic demand...

This paper presents new space vector pulsewidth modulation (PWM) strategies for a single-phase three-level buck-boost neutral point clamped inverter coupled with impedance-source (IS) network. These can be implemented systems any IS network point. The case study system is based on the quasi-Z-source continuous input current. To demonstrate an improved performance, are compared traditional PWM strategy. advantages lie in reduced switching number, without output voltage quality distortion....

In this paper, a comparative analysis is done for same frame induction and synchronous reluctance motors. Assessment based on real tests that considers motor efficiency, frequency converter efficiency total of the drive system. The results show used in motors have similar performance, means several applications cheaper could be instead relatively mature AC motor.

Regarding the control of micro- and nanogrids, LC- or LCL-filtered power inverters (acting as interfaces with distributed energy resources such photovoltaic wind) commonly perform grid-forming grid-supporting units to maintain both frequency voltage within pre-set standards. Nevertheless, these are assumed be connected at same point common coupling directly via radial feeders; thus, references for each parallel inverter, thus requiring a virtual impedance loop. In addition, classic sharing...

Transactive Energy (TE) is an evolving concept that combines information and energy in order to enable highly coordinated energetic transactions. Different sources define transactive different ways. The GridWise Architecture Council (GWAC) defines TE as " <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">A system of economic control mechanisms allows the dynamic balance supply demand across entire electrical infrastructure using value a key...

Restrictions on fossil fuels and related environmental pollution issues motivate many organizations countries to set their focus electric vehicles (EVs) rather than conventional internal combustion engine <xref ref-type="bibr" rid="ref1" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">[1]</xref> , rid="ref2" xmlns:xlink="http://www.w3.org/1999/xlink">[2]</xref> . EVs require an energy storage system store converted power in another form of then...