Results 91 to 100 of about 23,214 (232)

Robust Analytical LUT‐Based DPC for a Weak‐Grid‐Connected DFIG with Low‐Cost Implementation

Vector: The Journal of Engineering, Volume 2027, Issue 1, January/December 2027.
Analytical lookup‐table‐based direct power control of a grid‐connected doubly‐fed induction generator driven by two‐level voltage source inverter with stability proof and robustness. ABSTRACT This paper focuses on analytical lookup‐table (LUT)‐based direct power control (DPC) of a grid‐connected doubly‐fed induction generator (DFIG) driven by two‐level
Abdelhak Djoudi, Seddik Bacha, Hossein Iman‐Eini, Abdelhamid Kaabeche   +3 more
wiley   +1 more source

Alternative Structures for the Si(111) 7 × 7 Surface: Evidence for a Novel Class of Distorted Honeycomb Reconstructions

physica status solidi (b), Volume 263, Issue 11, November 2026.
It is widely believed that we understand and can calculate the properties of Si and its surfaces. Here our density functional theory (DFT) calculations of a wide range of alternative surface structures for the widely studied and accepted DAS model reveals a new alternative structure, ADH3, that better describes a wide range of experiments. A variety of
F. Matusalem, F. Bechstedt, J. E. Demuth
wiley   +1 more source

Comparison of Total Harmonic Distortion (THD) in Three-Level, Three-Phase Inverters Using Cascaded H-Bridge (CHB) and Neutral-Point-Clamped (NPC) Topologies

Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ
Utilizing the same parameters for operation, 50 Hz frequency, and 380 V line voltage, every single inverter is represented mathematically on the MATLAB/Simulink environment.
Wadhah Hasan
doaj   +1 more source

Performance Evaluation of a PV-Based Multilevel Inverter with Improved THD and Efficiency [PDF]

Journal of Applied Research in Electrical Engineering
This work presents the design, simulation, and performance evaluation of a three-phase multilevel inverter (MLI) system integrated with photovoltaic (PV) technology for grid-connected applications.
Parimalasundar Ezhilvannan, Kumar Reddy Cheepati, Suresh Krishnan   +2 more
doaj   +1 more source

Object Detection of Tree Uprooting Signatures in Gridded LiDAR Elevation Data

Earth and Space Science, Volume 13, Issue 11, November 2026.
Abstract Tree uprooting (or tree throw) is a natural forest disturbance with consequences for ecology, pedology, hydrology, geomorphology, and atmospheric fluxes. These events leave topographic signatures in the form of pit‐mound couplets (PMCs) that persist for decades to centuries.
T. H. Doane, A. Agarwal, B. J. Yanites, D. A. Edmonds   +3 more
wiley   +1 more source

Determination of the one‐electron reduced Wigner function for a molecular crystal

Acta Crystallographica Section A, Volume 82, Issue 6, Page 419-427, November 2026.
The first reconstruction of an experimental one‐particle reduced Wigner function for electrons in molecular crystals is reported. It relies on an ensemble N‐representable model jointly refined from the X‐ray diffraction and Compton scattering data.The Wigner function provides a complete phase‐space representation of a quantum state.
Sizhuo Yu, Jean-Michel Gillet
wiley   +1 more source

Measurements and Analysis of Light Non‐Methane Hydrocarbon Mole Fractions in 1982–1987 at Six Remote Sites Along the Pacific Rim

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 19, 16 October 2026.
Abstract Atmospheric non‐methane hydrocarbons (NMHCs) are important trace species with anthropogenic and natural sources including fugitive emissions from fossil fuel mining and distribution, biomass burning, biofuel combustion, and biogenic emissions from microbes and plants.
A. M. Smith, C. L. Butenhoff, M. A. K. Khalil, A. L. Rice   +3 more
wiley   +1 more source

THD analysis of SPWM & THPWM Controlled Three phase Voltage Source Inverter

, 2019
The aim of this paper is to determine the Total harmonic distortion (THD) of three phase voltage source inverter (VSI) fed R-L load. The modulation Techniques used is Sinusoidal pulse width modulation (SPWM) and third harmonic pulse width modulation ...
Mohd Abdul Muqeem Nawaz (6272025), Mohd Esa (6267437)   +1 more
core   +1 more source

Reduction of Total Harmonic Distortion (THD) on Multilevel Inverter with Modified PWM using Genetic Algorithm [PDF]

, 2017
In this research, modified PWM has been applied to the multilevel inverter (MLI) single-phase three-level diode clamp full bridge. Modified PWM is performed to produce minimum Total Harmonic Distortion (THD) the voltage because the quality of the good ...
Lucky Pradigta Setiya Raharja, Novie Ayub Windarko, Raharja, Lucky Pradigta Setiya, Q., Ony Asrarul, Ony Asrarul Q., Arief, Zainal, Zainal Arief, Windarko, Novie Ayub   +7 more
core   +1 more source

THD and efficiency study for PV grid-connected [PDF]

, 2012
Total harmonic distortion (THD) is a measurement of the harmonic distortion and is defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency.
Lafsah, Mat Daud
core   +2 more sources