Results 81 to 90 of about 22,404 (259)

Robust Control Using a Matrix Converter to Enhance Wind Turbine Systems

open access: yesEnergy Science &Engineering, EarlyView.
This study uses a more efficient and effective solution to improve the operational performance of a wind turbine‐based power system. This system uses a doubly fed induction generator and relies on a matrix converter and fractional‐order proportional–integral controller.
Sihem Ghoudelbourk   +4 more
wiley   +1 more source

Are West African Heat‐Lows Analogous to Dry Tropical Cyclones?

open access: yesInternational Journal of Climatology, EarlyView.
Heat‐lows qualitatively resemble dry tropical cyclones (TCs), though their underlying physics has yet to be compared. In this study, we show that West African transient heat‐low climatology correlates well with TC potential intensity generalised over land.
Aaron Kruskie   +2 more
wiley   +1 more source

Differential and Common-Mode Model-Based Controller for a Grid-Tied Three-Phase NPC Converter

open access: yesIEEE Access
This paper introduces a controller designed for transformerless inverters connected to the grid via an inductor-capacitor-inductor (LCL) output filter. The controller incorporates a virtual ground (VG) connection, providing a straightforward solution to ...
Gerardo Escobar   +5 more
doaj   +1 more source

Weight‐bearing computed tomography reveals greater anterior tibial translation and femorotibial rotation than magnetic resonance imaging in chronic anterior cruciate ligament deficiency: A prospective observational study

open access: yesKnee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose To compare anterior tibial translation and femorotibial rotation measurements obtained from conventional supine, non‐weight‐bearing magnetic resonance imaging (MRI) and weight‐bearing computed tomography (WBCT) in patients with chronic anterior cruciate ligament (ACL) tears. Methods WBCT of the knee acquired in full extension and at 30°
Renata Vidal Leão   +8 more
wiley   +1 more source

Resonant Current Impacts on the Lifetime of LCL Filter in PV Systems [PDF]

open access: green, 2023
Jiacheng Sun   +5 more
openalex   +1 more source

A General Analytical Formulation for LCL Filter Design for Grid-Connected PWM-Driven Cascaded H-Bridge Inverters

open access: yesIEEE Open Journal of Power Electronics
This paper proposes a general analytical formulation for LCL filter design for grid-connected PWM-driven cascaded H-bridge inverters. The novelty of this work deals with providing some easy-of-use analytical expressions that allow for properly sizing the
Giuseppe Schettino   +5 more
doaj   +1 more source

Impedance-compensated grid synchronisation for extending the stability range of weak grids with voltage source converters [PDF]

open access: yes, 2016
This paper demonstrates how the range of stable power transfer in weak grids with voltage source converters (VSCs) can be extended by modifying the grid synchronisation mechanism of a conventional synchronous reference frame phase locked loop (PLL).
D'Arco, Salvatore   +3 more
core   +2 more sources

Bath Vibration During Open Eye Formation in a Physical Model of a Steelmaking Ladle

open access: yessteel research international, EarlyView.
Using a physical model, this study shows that vibration measurements reliably predict open eye size in steelmaking ladles, offering a practical alternative to visual monitoring. Vessel vibrations stabilize faster than the open eye, except at high frequencies near the bottom.
Mika Pylvänäinen   +6 more
wiley   +1 more source

Analysis and design of LCL filter based synchronverter [PDF]

open access: yes2017 IEEE Energy Conversion Congress and Exposition (ECCE), 2017
Electrical energy generation is evolving from centralized towards distributed energy resources (DER) like wind and solar power plants. In such power systems, new challenges arise for the design of voltage source converter (VSC) control strategies.
Roberto Rosso   +4 more
openaire   +1 more source

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