Results 61 to 70 of about 9,155 (248)

Femme aimée, aimer-femme, aimer les femmes...

open access: yesLes Cahiers du GRIF, 1978
Femme aimée, aimer-femme, aimer les femmes.... In: Les Cahiers du GRIF, n°20, 1978. Femmes entre elles, lesbianisme. pp. 93-95.
openaire   +2 more sources

Behaviour in Magnetic Fields of Fast Conventional and Fine-Mesh Photomultipliers

open access: yes, 2012
The performance of both conventional and fine-mesh Hamamatsu photomultipliers has been measured inside moderate magnetic fields. This has allowed the test of effective shielding solutions for photomultipliers, to be used in time-of-flight detectors based
A. de Bari   +11 more
core   +1 more source

Enhancing understanding of the rotating magnetic field in electric machines through active learning and visualization

open access: yesEngineering Reports, Volume 6, Issue 11, November 2024.
This paper introduces a method to enhance comprehension of AC electric machine principles, focusing on the Rotating Magnetic Field (RMF) using Finite Element Method software for visualization. Traditional textbook methods are reviewed, highlighting their limitations.
Mohammadali Abbasian
wiley   +1 more source

Numerical modeling of HTS excited medium‐speed wind generators with diode rectifier stator feeding

open access: yesInternational Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Volume 37, Issue 5, September/October 2024.
Abstract Medium‐speed wind generators in the MW‐range with high‐temperature superconducting excitation winding are analyzed by means of non‐linear 2D and 3D FEM models. Besides an inverter‐based sinusoidal stator current feeding, a grid connection via a diode rectifier is analyzed by using coupled FEM and circuit simulations.
Robin Köster, Andreas Binder
wiley   +1 more source

Numerical-field evaluation of an efficiency of a shortening of a three-phase stator winding of a cylindrical magnetic field inductor [PDF]

open access: yes, 2019
Эффективность работы цилиндрических индукторов магнитного поля определяется уровнем поля внутри их рабочей камеры. Это поле возбуждается трехфазной обмоткой статора.
Милых, Владимир Иванович   +1 more
core   +1 more source

Design of 20 MW direct‐drive permanent magnet synchronous generators for wind turbines based on constrained many‐objective optimization

open access: yesWind Energy, Volume 27, Issue 9, Page 847-872, September 2024.
Abstract This study introduces a constrained many‐objective optimization approach for the optimal design of 20 MW direct drive (DD) permanent magnet synchronous generators (PMSGs). Designing a high‐performance, competitive DD‐PMSG requires considering the generator's performance as well as its weight and material cost.
Seok‐Won Jung   +4 more
wiley   +1 more source

Condition monitoring of permanent magnet AC machines for all‐electric transportation systems: State of the art

open access: yesIET Energy Systems Integration, Volume 6, Issue 3, Page 213-229, September 2024.
Abstract The current state of the art on emerging and efficient techniques for condition monitoring of permanent magnet (PM) alternating‐current (AC) machines deployed in electric vehicle (EV) applications is presented. The discussion includes the most common and specific types of faults in PM motors, such as rotor demagnetisation and stator inter‐turn
Adil Usman, Bharat Singh Rajpurohit
wiley   +1 more source

РАСЧЕТ ЭЛЕКТРИЧЕСКИХ ПОЛЕЙ В ЭЛЕМЕНТАХ КОНСТРУКЦИИ КОМБИНИРОВАННОГО ВЫСОКОВОЛЬТНОГО ИЗМЕРИТЕЛЬНОГО ТРАНСФОРМАТОРА ТОКА И НАПРЯЖЕНИЯ

open access: yesElektrotehnìka ta Elektroenergetika, 2007
С использованием программы FEMM выполнен расчет электрических полей в изоляционном промежутке комбинированного элегазового высоковольтного измерительного трансформатора тока и напряжения.
D. A. Saveliev, E. V. Boyarintseva
doaj  

The influence of switched reluctance generator winding parameters on output power at different rotational speeds

open access: yesITM Web of Conferences, 2018
The paper presents the influence of the winding parameters of a switched reluctance generator on output power at different rotational speeds. All tested generators were designed on the basis of the same magnetic circuit.
Sliwiński Artur   +2 more
doaj   +1 more source

FEMM како едукативна алатка за решавање на проблеми од електромагнетизам [PDF]

open access: yes, 2014
Во овој труд претставена е употребата на софтверскиот пакет FEMM како комплетна софтверска алатка за решавање на електромагнетни проблеми за едукативни цели.
Cingoski, Vlatko   +3 more
core  

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