Results 51 to 60 of about 4,909 (199)

Particle swarm optimization effectiveness for selectiveharmonic elimination in multilevel inverters at varyingoutput levels

open access: yesMajlesi Journal of Electrical Engineering
Multilevel inverters (MLI) play a pivotal role in diverse applications, notably solar power generation, owing to their capacity for generating high-quality, multiple-level output voltages with reduced total harmonic distortions (THD) in comparison to ...
Muhammad Najwan Hamidi, Dahaman Ishak
doaj   +1 more source

Unraveling the effect of topological structures of B/N‐doped conjugated macrocycles on spectral properties: A computational study

open access: yesSmart Molecules, EarlyView.
Herein, we constructed a series of fully B‐doped, fully N‐doped and hybrid B/N‐doped conjugated macrocycles considering three key topological factors. At a fixed ring size, the spectra initially redshift then blueshift with varying B/N ratio, while ring size exhibits negligible impact on spectra.
Wen‐Yu Guo   +4 more
wiley   +1 more source

Design and analysis of 15-level inverter with a new voltage level generation method

open access: yesAin Shams Engineering Journal
Multilevel inverters (MLIs) are commonly used in high-power applications for their ability to reduce Total Harmonic Distortion (THD) and improve power quality. However, the need for multiple DC sources in MLIs can increase complexity and cost. This study
Hasan Hataş
doaj   +1 more source

Stability Modelling and Analysis of an Integrated Wind‐PV‐Storage Power System: A Small‐Signal Approach Using Multi‐Coordinate System Consistency Transformation

open access: yesEnergy Internet, EarlyView.
ABSTRACT With growing energy demand and depletion of fossil fuels, renewable energy development is crucial for achieving dual‐carbon goals. This paper focuses on small‐signal modelling and stability analysis of a grid‐connected wind‐PV‐storage system.
Puyu Wang   +7 more
wiley   +1 more source

Highly efficient three-phase grid-connected parallel inverter system

open access: yesJournal of Modern Power Systems and Clean Energy, 2018
In this paper, a new three-phase grid-connected inverter system is proposed. The proposed system includes two inverters. The main inverter, which operates at a low switching frequency, transfers active power to the grid.
Evren ISEN, Ahmet Faruk BAKAN
doaj   +1 more source

Zero‐Current Switching Based Model Predictive Control of a Double‐Extended Overlapped Alternate Arm Converter Used in the VSC–HVDC System

open access: yesHigh Voltage, EarlyView.
ABSTRACT The alternate arm converter (AAC) is one of the most efficient multilevel topologies based on voltage source converters (VSCs), which has recently gained attention in various applications, particularly in high voltage direct current (HVDC) systems.
Ehsan Akbari, Milad Samady Shadlu
wiley   +1 more source

High Step-Up 3-Phase Rectifier with Fly-Back Cells and Switched Capacitors for Small-Scaled Wind Generation Systems

open access: yesEnergies, 2015
This paper proposes and discusses a novel AC/DC converter suitable for small-scaled wind power generation system applications. By introducing flyback cells into the three-phase single-switch Boost circuit, the proposed converter is designed as single ...
Yi-Feng Wang   +5 more
doaj   +1 more source

Optimization of Wind‐PV Co‐Generation Systems Using Artificial Bee Colony and Back‐to‐Back Voltage Source Converter

open access: yesIET Smart Energy Systems, EarlyView.
The Graphical Abstract depicts the proposed Artificial Bee Colony algorithm‐based optimal tuning of PI controllers for back‐to‐back Voltage Source Converters in a hybrid wind–PV system. ABSTRACT This paper proposes a hybrid model‐based back‐to‐back voltage‐source converter (B2B‐VSC) system comprising a Photovoltaic (PV) array and a Permanent Magnet ...
Ch. Sreenu   +3 more
wiley   +1 more source

Tangent Blow‐Ups for Processing Non‐Manifold Geometry

open access: yesComputer Graphics Forum, EarlyView.
Abstract Many geometry processing pipelines implicitly assume their input data is a manifold, or is sampled from one, with a unique tangent plane at every point. Geometric data, however, routinely contains sharp features like edges, corners, self‐intersections, branching junctions, and other singularities, rendering standard methods ill‐defined at ...
Alice Petrov   +3 more
wiley   +1 more source

Comparative study on the mechanical properties of denture base resins and resilient silicone liners fabricated using different methods and by different manufacturers

open access: yesJournal of Prosthodontics, EarlyView.
Abstract Purpose The aim of this study was to compare the mechanical properties of clinically used resilient silicone liners and denture base resins (DBRs) prepared using different fabrication methods and to evaluate how different combinations influenced these properties.
Hyun Ho Song, Ho Rim Lee, Jae Jun Ryu
wiley   +1 more source

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