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Relevant bibliographies by topics / Electromagnetic torque / Dissertations / Theses

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Dissertations / Theses on the topic 'Electromagnetic torque'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Diryak, Eljaroshi Mohamed E. "The modelling, design and the operation of an electromagnetic torque converter." Thesis, University of Leicester, 2015. http://hdl.handle.net/2381/41269.

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The current hydraulic torque converter has many drawbacks. It requires a significant amount of oil to drive the impeller, and the turbine, which may cause a loss of energy. In addition, the direct contact of the mechanical parts of the conventional hydraulic torque converter increases the possibility of parts failure and mechanical noise. This thesis proposes a new and novel Electromagnetic Torque Converter (EMTC) system, which replaces the conventional hydraulic torque converter. The new EMTC system comprises of two parts, a Differential Machine (DM) part, which is a double rotor single stato

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2

Ranlöf, Martin. "Electromagnetic Analysis of Hydroelectric Generators." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-146629.

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Hydropower maintains its position as the most important source of renewable electric energy in the world. The efficiency of large hydropower plants is unsurpassed, and after more than hundred years of development, the technology is mature and highly reliable. While new hydro resources are currently being developed in Asia and South America, most European countries go through a phase of intense refurbishment and upgrading of existing plants. Challenges faced by the hydropower industry include a knowledge transfer to new generations and the adaptation of unit designs to meet new operational requ

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3

Lim, Ren Chong. "Application of magnetic torque on the bacterial flagellar motor." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:2f18fdff-e876-4be6-8ac2-c8281a4a905a.

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There is a strong need to develop a mechanical method to apply external torque to the bacterial flagellar motor. Such a method will allow us to probe the behaviour of the motor at a range of different speeds under different external conditions. In this thesis, I explored various methods to deliver torque at the single-molecule level, in particular the use of angular optical trapping and magnetic tweezers. I have identified rutile particles as suitable handles for use in angular optical trapping due to their high birefringence. Further progress was not achieved using angular optical trapping du

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4

Paula, Geyverson Teixeira de. "Influência da saturação no torque da máquina síncrona de ímã permanente no rotor." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-26082013-105401/.

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O presente trabalho trata do estudo e análise da influência da saturação magnética no torque de uma máquina síncrona com ímã permanente no rotor. A máquina síncrona em es-tudo trata-se de uma máquina cuja forma de onda de força contra eletromotriz é trapezoidal. Inicialmente é feito um estudo sobre os efeitos da saturação magnética nos três principais parâmetros da máquina, indutância de fase, relutância (vista pelo circuito que tem como fonte de fluxo magnético os ímãs permanentes) e a força contra eletromotriz. Em seguida, realiza-se um estudo sobre o torque eletromagnético para a máquina e

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5

Santana, Marcelo Patrício de. "Controle vetorial aplicado à redução das ondulações do torque eletromagnético no gerador de indução duplamente alimentado em sistemas eólicos." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-31012018-155034/.

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Este trabalho apresenta um sistema de controle com o objetivo de atenuar as ondulações do torque eletromagnético considerando os harmônicos de quinta, sétima, décima primeira e décima terceira ordem da tensão do estator do Gerador de Indução Duplamente Alimentado (GIDA). Dessa maneira, propõe-se a utilização de controladores proporcional-integrativo vetoriais juntamente com um sistema de identificação dos componentes harmônicos da corrente do estator empregando a transformada discreta de Fourier. O trabalho aborda a influência dos harmônicos de quinta, sétima, décima primeira e décima terceira

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6

Skalka, Miroslav. "Analýza vlivu mechanického momentu asynchronního stroje na sycení magnetického obvodu." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-233534.

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e main goal of this thesis is mechanical torque analysis of induction machine based on magnetic circuit saturation, oversaturated areas classification and the possibility of oversaturated areas reduction of their influence on machine properties. Whole problem is solved by finite element method in ANSYS program. Work is divided into the description and creating of electromagnetic model, a method of the induction machine equivalent circuit parameters determination, the electromagnetic field calculation by finite element method, experimental measurement using LabVIEW program with measurement acce

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7

Júlio, élida Fernanda Xavier. "Controle inteligente de um sistema de usinagem acionado por motor de indução trifásico." Universidade Federal da Paraíba, 2014. http://tede.biblioteca.ufpb.br:8080/handle/tede/5377.

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Made available in DSpace on 2015-05-08T14:59:55Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 6398613 bytes, checksum: e09f8497ce0bd0c80029b3b1c6af2d9e (MD5) Previous issue date: 2014-03-27<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>In this paper, a control strategy is presented to control the position and feedrate of the table of a milling machine driven by three-phase induction motor for machining pieces consisting of different types of materials: steel, brass and nylon. In the development of the control strategy, it was applied the technique of vector

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8

He, Lijun. "Analysis of the dynamics of the linear-and-rotary-motion energy-conversion systems with active DC excitation." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54417.

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The objective of the dissertation is to develop simplified analytical models for typical linear-motion and rotary-motion energy-conversion systems under active DC excitation without tedious numerical-simulation effort, and provide practical implementation of the models in optimal-design and thermal-protection aspects. The model of a vacuum automatic circuit recloser (a typical linear-motion system under DC excitation) is first developed in the form of a non-linear discontinuous eighth-order dynamic system. The model is then used to simulate the transient mechanical and electromagnetic perform

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9

Carraro, Enrico. "Analysis and design procedures of permanent magnet machines for hybrid electric vehicles and rail-traction applications." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3421927.

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The interest for Permanent Magnet (PM) synchronous machines has increased in the recent years. This is mainly due to important developments in the field of the electrical machine design, control systems and PM technology. These factors enable the possibility of designing electrical machines with a high torque density, power density, efficiency, low cost with wide degrees of freedom. Such requirements are highly sought in the automotive field, especially following the increasingly stringent energy efficiency and air pollution emissions policies. These conditions are pushing forward the transiti

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10

Li, Kang. "An Investigation into the Torque Capabilities of High Gear Ratio Magnetic Gearboxes." Thesis, The University of North Carolina at Charlotte, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10845412.

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<p> Mechanical gears can be as small as those in traditional mechanical watches or as large as those in mechanical marine turbines. They can be seen in almost all transportation tools, for example, bicycles, cars, trains and airplanes. Though they have been studied and refined for centuries, there are still some disadvantages. For instance, mechanical gears often create a large amount of noise and vibration. They require regular maintenance as the gears need to be lubricated. In addition, if a gear is overloaded it can catastrophically fail. </p><p> Unlike conventional mechanical gears, mag

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11

Jackson, Delbert James. "Electromagnetic levitation of a solid metallic torus." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0015/MQ54127.pdf.

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12

Younsi, Mohamed Omar. "Analyse, diagnostic et optimisation énergétiques d'un parc de machines électriques sur site industriel." Thesis, Artois, 2017. http://www.theses.fr/2017ARTO0211/document.

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Les moteurs électriques sont responsables de 67% de la consommation d’électricité dans l’industrie. Remplacer les moteurs installés par des entrainements plus efficients requiert de statuer sur leur adéquation avec les charges qu’ils entrainent. Une contrainte forte est de les analyser « on-line » et sans mesures intrusives ni consignations des installations.Cette thèse répond à un triple objectif. Premièrement, un dispositif de diagnostic « non-invasif » facilement intégrable en milieu industriel a été développé avec quatre méthodes d’évaluation du niveau de charge des moteurs asynchrones dir

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13

Luharuka, Rajesh. "An electromagnetically actuated rotary gate microvalve with bistability." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/22576.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2007.<br>Committee Chair: Hesketh, Peter J.; Committee Member: Allen, Mark G.; Committee Member: Degertekin, F. Levent; Committee Member: Frazier, Bruno A.; Committee Member: Graham, Samuel.

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14

Cipín, Radoslav. "Moderní matematické metody syntézy a analýzy střídavých strojů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-233566.

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The doctoral thesis is divided into three main parts with a focus on induction motors. The first part deals with the electromagnetic design and analysis of windings of AC ma-chines. There is introduced the density of conductors, which describes the distribution of the windings in the slots. There is derived general formula for calculation of the total winding factor applicable to any type of winding. The second part of this work deals with the acceleration method of the induction motors torque-speed characteristics measurement. The measured characteristics are used for exact identification of

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15

Hasan, Iftekhar Hasan. "Modeling and Analysis of High Torque Density Transverse Flux Machines for Direct-Drive Applications." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1515582377354583.

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16

Stone, Mark. "Anomalous Properties of Sub-10-nm Magnetic Tunneling Junctions." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3640.

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Magnetic Logic Devices have the advantage of non-volatility, radiation hardness, scalability down to the sub-10nm range, and three-dimensional (3D) integration capability. Despite these advantages, magnetic applications for information processing remain limited. The main stumbling block is the high energy required to switch information states in spin-based devices. Recently, the spin transfer torque (STT) effect has been introduced as a promising solution. STT based magnetic tunneling junctions (MTJs), use a spin polarized electric current to switch magnetic states. They are theorized to bring

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17

Uddin, Md Wasi. "Modeling and Control of Fully Pitched Mutually Coupled Switched Reluctance Machines." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1469123515.

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18

Bracikowski, Nicolas. "Modélisation multi-physique par modèles à constantes localisées ; application à une machine synchrone à aimants permanents en vue de son dimensionnement." Phd thesis, Ecole Centrale de Lille, 2012. http://tel.archives-ouvertes.fr/tel-00905641.

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Afin de définir une conception optimale d'un système électromécanique, celui-ci doit intégrer des contraintes toujours plus drastiques et de nombreux phénomènes physiques issus de : l'électromagnétique, l'aérothermique, l'électronique, la mécanique et l'acoustique. L'originalité de cette thèse est de proposer une modélisation multi-physique pour la conception reposant sur des modèles à constantes localisées : solution intermédiaire entre la modélisation analytique et numérique. Ces différents modèles permettront l'étude et la conception sous contraintes d'une machine synchrone à aimants perman

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19

Kummara, Venkata Guru Raghavendra. "Simulation of Switched Reluctance Motors." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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This project includes the basic principle of the switched reluctance motors, motor topologies, mathematical approach, torque production, electromagnetics, drives, converters and their applications. This part means to help to understand the working principle and properties of SRM,(Switched Reluctance Motors). Some controlling actions of the SRM, such as Current Control and Speed Control, are employed. Simulation results will be discussed at the end and compared with the predefined Simulink Model of the Switched Reluctance Motors.

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20

Шилкова, Лариса Василівна. "Удосконалення проєктного аналізу електромагнітних параметрів та характеристик індукторів обертового магнітного поля для технологічної обробки різних речовин". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2020. http://repository.kpi.kharkov.ua/handle/KhPI-Press/49278.

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Дисертація на здобуття наукового ступеня доктора філософії за спеціальністю 141 – Електроенергетика, електротехніка та електромеханіка. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2020. Об'єктом дослідження є індуктори обертового магнітного поля для технологічної обробки різних речовин. Предметом дослідження є електромагнітні параметри та характеристики індукторів обертового магнітного поля. Дисертація присвячена вирішенню актуального наукового завдання з удосконалення проєктного аналізу електромагнітних параметрів в режимі неробочого ходу і характеристи

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21

Shiwakoti, Rochak. "Design and Analysis of Modular Axial Flux Switched Reluctance Motor." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2680.

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This thesis presents a new modular structure of the axial flux Switched Reluctance Motor (SRM). The design consists of four stator disks with each adjacent disk rotated 30 degrees apart and four rotor disks connected to a common shaft. The proposed design aims to reduce the unwanted radial force, mitigate the torque ripple, and improve the efficiency. The modular structure distributes the radial force and torque strokes along the axial length of the motor, potentially damping the torque pulsation. In addition, the modular structure would deliver the rating power at a lower current level, reduc

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22

Husain, Tausif. "DESIGN, ANALYSIS AND IMPLEMENTATION OF A NOVEL DOUBLE SIDED E-CORETRANSVERSE FLUX MACHINE WITH AXIAL AIRGAP." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1500561964286682.

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