Results 81 to 90 of about 20,414 (311)
New Adaptive Control Strategy for a Wind Turbine Permanent Magnet Synchronous Generator (PMSG)
Inventions, 2020 Wind energy conversion systems have become a key technology to harvest wind energy worldwide. In permanent magnet synchronous generator-based wind turbine systems, the rotor position is needed for variable speed control and it uses an encoder or a speed ...
Wenping Cao +4 more
doaj +1 more source
Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics
Advanced Materials, EarlyView.The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades +7 more
wiley +1 more source
MPPT Based on Power Mapping and Frequency Derivative [PDF]
, 2014 This article presents a method for harmonic mitigation and maximum power point tracking for a variable-speed grid-connected wind turbine. The wind energy conversion system consists of a permanent magnet synchronous generator driven by variable-speed ...
A. Ibrahim, El-Nobi +2 more
core +1 more source
On extended Kalman filters with augmented state vectors for the stator flux estimation in SPMSMs [PDF]
, 2010 The demand for highly dynamic electrical drives, characterized by high quality torque control, in a wide variety of applications has grown tremendously during the past decades.
Boel, René +2 more
core +2 more sources
Permanent Magnet Synchronous Generator – Unsymmetrical Point Operation
, 2014 The article presents the concept of an electromagnetic circuit generator with permanent magnets mounted on the surface rotor core designed for single phase work. Computation field-circuit model was shown. The spectrum of time course of voltages in the idle work was presented.
openaire +1 more source
Recent Advances in Collective Behaviors of Micro/Nanomotor Swarms
Advanced Materials, EarlyView.This review describes the driving forces behind collective motion, explores the self‐organization of micro/nano swarms across zero‐dimensional (0D), one‐dimensional (1D), two‐dimensional (2D), and three‐dimensional (3D) spaces, and highlights their potential in drug delivery, environmental monitoring, and smart devices.
Siwen Sun +4 more
wiley +1 more source
A Thorough Procedure to Design Surface-Mounted Permanent Magnet Synchronous Generators
MachinesThis paper sets forth a thorough procedure to design surface-mounted permanent magnet synchronous generators. Since synchronous generators generate the majority of electrical energy, their relevance in society nowadays is substantial.
Gustavo Garbelini de Menezes +3 more
doaj +1 more source
Ain Shams Engineering Journal, 2018 This paper proposes an improved fast dynamic system for controlling Matrix Converter (MC) based on modified hysteresis current controller using optimal tuning PI controller.
Naggar H. Saad +2 more
doaj +1 more source
Influence of the amount of permanent-magnet material in fractional-slot permanent-magnet synchronous machines [PDF]
, 2014 The efficiency of permanent-magnet (PM) synchronous machines with outer rotor and concentrated windings is investigated as a function of the mass of magnets used, keeping the power, volume, and mechanical air-gap thickness constant. In order to be useful
Sergeant, Peter, Van den Bossche, Alex
core +2 more sources
Advanced Materials, EarlyView.Coupling a dual‐gradient carbonized framework with Fe2O3/Fe‐N‐C catalytic sites enables spatially synchronized sulfur redox across the entire electrode thickness in high‐mass‐loading Li–S batteries. This synergistic structural–catalytic design effectively mitigates concentration, ohmic, and electrochemical polarization, thereby achieving high‐capacity ...
Yuxuan Zhang +6 more
wiley +1 more source