Relevant bibliographies by topics / Magnet / Dissertations / Theses
To see the other types of publications on this topic, follow the link: Magnet.

Dissertations / Theses on the topic 'Magnet'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Magnet.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Lopez, Gomez Partida Fausto. "Design of a Permanent Magnet Synchronous Generator with Alnico Magnets." Thesis, Uppsala universitet, Elektricitetslära, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-395215.

Full text
Abstract:
Following the trends to diminish the fossil fuel energy production new technologies known for their renewable sources have become a signficant option for helping combat climate change and handle the current oil prices. These new technologies base their power production on already established physical principles that convert mechanical power to electrical power. Generators are the fundamental piece of machinery for electricity production. Among the various types of generators that exist, permanent magnet synchronous generators (PMSGs) are commonly used for renewable electricity production. At p
APA, Harvard, Vancouver, ISO, and other styles
2

Nwaribe, Nicholas. "Active magnet bearings." Thesis, National aviation university, 2021. https://er.nau.edu.ua/handle/NAU/52781.

Full text
Abstract:
1. Access mode: https://www.calnetix.com/resource/magnetic-bearings/advantages-magnetic-bearings 2. Access mode: https://www.waukbearing.com/resources/bearing-knowledge/how-active-magnetic-bearings-work.<br>A magnetic bearing is a form of bearing that uses magnetic levitation to support a load. Moving parts are supported by magnetic bearings without any physical contact. For example, they can levitate a spinning shaft and allow relative motion with very little friction and no mechanical wear. Magnetic bearings support the highest speeds of any kind of bearing and have no maximum relative spee
APA, Harvard, Vancouver, ISO, and other styles
3

Slocum, Kendra M. "Nurse job satisfaction and empowerment in magnet and non-magnet hospitals." Muncie, Ind. : Ball State University, 2008. http://cardinalscholar.bsu.edu/370.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Gon?alves, Charlie Salvador. "Montagem e constru??o de um magnet?metro a efeito Kerr magneto-?ptico." Universidade Federal do Rio Grande do Norte, 2006. http://repositorio.ufrn.br:8080/jspui/handle/123456789/16624.

Full text
Abstract:
Made available in DSpace on 2014-12-17T15:15:00Z (GMT). No. of bitstreams: 1 CharlieSG.pdf: 1382454 bytes, checksum: 2b54a2a0dcd81f1ca374af1328ff8c73 (MD5) Previous issue date: 2006-03-15<br>Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico<br>n this master s dissertation a Kerr Magneto Optic s magnetometer effect was set up to do characterization of samples type films fine and ultra thin, these samples will be grown after the implementation of the sputtering technique at the magnetism laboratory of of this department. In this work a cooled electromagnet was also built the wat
APA, Harvard, Vancouver, ISO, and other styles
5

Kumar, Jha Amit. "Optimization of Line Start Permanent Magnet Synchronous Motor for Magnet Cost Reduction." Thesis, KTH, Elektrisk energiomvandling, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-124550.

Full text
Abstract:
In this thesis different methods of optimizing line start permanent magnet motor (LSPM) for magnet cost reduction is studied. Influence of different parameters has been studied by simulating magneto-static and transient FEM models of the machine. Finally a motor design of a LSPM with high rotor saliency has been proposed. The first method investigated is the use of flux barriers in LSPM and its effect on the magnetic flux leakage. The flux barriers reduce the flux leakage and hence help in reducing magnet volume. The second method studied is the use of two different grades of magnets. Using lo
APA, Harvard, Vancouver, ISO, and other styles
6

Devgan, S. K. "Permanent magnet synchronous motors." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235056.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Edström, Alexander. "Theoretical Magnet Design : From the electronic structure of solid matter to new permanent magnets." Licentiate thesis, Uppsala universitet, Materialteori, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-231810.

Full text
Abstract:
A good permanent magnet should possess a large saturation magnetisation (Ms), large mag- netocrystalline anisotropy energy (MAE) and a high Curie temperature (TC). A difficult but important challenge to overcome for a sustainable permanent magnet industry is to find novel magnetic materials, exhibiting a large MAE, without the use of scarcely available elements such as rare-earth metals. The purpose of this thesis is to apply computational methods, including density functional theory and Monte Carlo simulations, to assess the three above mentioned permanent magnet properties and in particular
APA, Harvard, Vancouver, ISO, and other styles
8

Manakshya, Nikhil. "Permanent magnet synchronous machine using ferrite vs rare earth magnets : how do they compare?" Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302658.

Full text
Abstract:
Permanent magnet synchronous machines (PMSM are considered as viable options for automotive and traction applications. Rare earth magnets such as Neodymium Iron Boron (NdFeB is the most common choice in the PMSM for electric vehicles to achieve high power density machines. However, rare earth magnets are problematic from ethical and sustainability perspectives. From these perspectives, there are better magnet alternatives, such as ferrites. Ferrite magnets are well known for lower environmental impact, abundance and low cost. Due to a lower residual flux density of a ferrite magnet than that o
APA, Harvard, Vancouver, ISO, and other styles
9

Sokolowski, Peter Kelly. "Processing and protection of rare earth permanent magnet particulate for bonded magnet applications." [Ames, Iowa : Iowa State University], 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Ko, Wonsuk. "MODELING AND ANALYSIS OF THE EDS MAGLEV SYSTEM WITH THE HALBACH MAGNET ARRAY." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3582.

Full text
Abstract:
The magnetic field analysis based on the wavelet transform is performed. The Halbach array magnetic field analysis has been studied using many methods such as magnetic scalar potential, magnetic vector potential, Fourier analysis and Finite Element Methods. But these analyses cannot identify a transient oscillation at the beginning stage of levitation. The wavelet transform is used for analyzing the transient oscillatory response of an EDS Maglev system. The proposed scheme explains the under-damped dynamics that results from the cradle's dynamic response to the irregular distribution of the m
APA, Harvard, Vancouver, ISO, and other styles
11

Wang, Tianhao. "Self-sensing permanent magnet machine." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/42541/.

Full text
Abstract:
This thesis looks at the saliency-based self-sensing control of permanent magnet synchronous machines (PMSM) and a novel machine configuration is proposed to improve the self-sensing performances. In recent time, PMSM drives have been steadily gaining popularity and have widespread applications in industry due to its benefits such as high power density, good dynamic performance and high efficiency. Self-sensing drives are superior to conventional drives in applications where the reliability and the cost are of important factors. Machine saliency is utilized for rotor position tracking during t
APA, Harvard, Vancouver, ISO, and other styles
12

Shamanoff, Gloria. "Achievement gains of average ability students in a magnet program versus a non-magnet program." Virtual Press, 1986. http://liblink.bsu.edu/uhtbin/catkey/468350.

Full text
Abstract:
The purpose of the study was to determine the effect, if any, of a selected magnet school program on achievement of average ability students. Repeated academic growth of average ability elementary magnet school students was compared with repeated academic growth of average ability elementary non-magnet school students in a major school corporation in northern Indiana.Data were collected from thirty-eight average mental ability fifth grade magnet school students and thirty-eight average mental ability fifth grade non-magnet school students from twenty-two schools. Student subjects had been in t
APA, Harvard, Vancouver, ISO, and other styles
13

Chaaban, Farid B. "Computer aided analysis, modelling and experimental assessment of permanent magnet synchronous machines with rare earth magnets." Thesis, University of Liverpool, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293710.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Malloy, Adam. "Thermal management of the permanent magnets in a totally enclosed axial flux permanent magnet synchronous machine." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/25094.

Full text
Abstract:
Elevated magnet temperature in Axial Flux Permanent Magnet Synchronous Machines (AF PMSM) adversely affects torque production, material cost, and the risk of demagnetisation. These machines show promise in applications requiring high power density, however the factors which affect magnet temperature have rarely been investigated. This is therefore the focus of the thesis. A multiphysics numerical model was formulated which predicted the loss, flow, and temperature fields within an AF PMSM. A criterion for estimating the relative importance of the fluctuating component of a periodic heat source
APA, Harvard, Vancouver, ISO, and other styles
15

Alamoudi, Yasser Abdullah H. "A new modulated permanent magnet twin stator machine for high torque density and better magnet utilisation." Thesis, University of Newcastle upon Tyne, 2015. http://hdl.handle.net/10443/3017.

Full text
Abstract:
Given the recent interest in the replacement of internal combustion engines with electric machines, the main aim of this research is to design a high torque density permanent magnet machine to an electric vehicle’s specification. A new design concept for increasing the torque density of a conventional permanent magnet machine is introduced and described theoretically and mathematically. The proposed method involves splitting the stator teeth in order to introduce a magnetic gear ratio into the torque equation. The introduced machine is also further modified to improve its magnet utilisation. A
APA, Harvard, Vancouver, ISO, and other styles
16

Tomka, George Jiri. "Magnetisation reversal in permanent magnet materials." Thesis, University of Central Lancashire, 1992. http://clok.uclan.ac.uk/20073/.

Full text
Abstract:
This thesis presents an investigation of the reversal of magnetisation in sintered anisotropic Nd-Fe-B, isotropic melt-spun Nd-Fe-B powder, and in Sm-(Co,Cu,Fe,Zr) 2:17 anisotropic powder. Magnetisation measurements have been performed using vibrating sample magnetometers, a permeameter, and an adapted pulsed field magnetometer. Magnetisation reversal is explained in terms of domain wall formation and motion, and irreversible switching of moments across energy barriers. For sintered Nd-Fe-B, consisting of multi-domain grains in the virgin state, it is suggested that the pinning of domain walls
APA, Harvard, Vancouver, ISO, and other styles
17

Witte, Holger. "Magnet design using finite element analysis." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491607.

Full text
Abstract:
This thesis applies the method of finite element software to calculate pulsed high field magnets. The calculations address the structural and thermal load of pulsed magnets during discharge and at peak field. The most successful currently-used coil designs from different magnet laboratories are assessed with these methods. The results are compared against wellestablished analytic programs; arising differences are discussed. Particular emphasis is on the coil designs developed for the pulsed field facility in the Clarendon Laboratory, Oxford, UK. The facility, named after Nikolas Kurti, is desc
APA, Harvard, Vancouver, ISO, and other styles
18

Qin, Ling. "A permanent-magnet switched-flux generator." abstract and full text PDF (free order & download UNR users only), 2005. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3210935.

Full text
APA, Harvard, Vancouver, ISO, and other styles
19

Weeren, Harald van. "Magnesium diboride superconductors for magnet applications." Enschede : University of Twente [Host], 2007. http://doc.utwente.nl/58096.

Full text
APA, Harvard, Vancouver, ISO, and other styles
20

Maynard, Matthew. "Permanent magnet machines in magnetic bearings." Thesis, University of Sussex, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288787.

Full text
Abstract:
In rotating machinery there exist mechanical and electrical losses. With the advent of more efficient power-electronic devices, the shift has been towards reducing mechanical losses. There are solutions that exist, such as air bearings and oil-mist bearings that go some way to reducing these losses. In order to produce an even more efficient machine, windage losses must be reduced. This can be achieved by placing the machine in a vacuum. It becomes clear, therefore, that the bearing system can only be of the magnetic type. An area of research interest that has developed as a result of higher-e
APA, Harvard, Vancouver, ISO, and other styles
21

Varghese, Sajan. "Electromagnetic Noise from Permanent Magnet Motors." Thesis, KTH, Farkost och flyg, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-143492.

Full text
Abstract:
With today’s increase in rail traffic the impact of noise on the people near railway lines is increasing. To control this problem European Union regulations, including TSI (Technical Specifications for Interoperability) Noise, has come into force by implementing many strict norms on new railway vehicles put on the market. One TSI regulation is limiting the acceleration noise, which in turn calls for low noise solutions for drive systems which typically governs the vehicle noise at low speeds, up to around 80 Km/hr. This regulation on railway noise has become a major challenge for many train ma
APA, Harvard, Vancouver, ISO, and other styles
22

Widdowson, G. P. "Design optimization of permanent magnet actuators." Thesis, University of Sheffield, 1992. http://etheses.whiterose.ac.uk/1849/.

Full text
Abstract:
This study describes the design optimization of permanent actuators, of both rotary and linear topologies. Parameter scanning, constrained single and multi-criterion optimization techniques are developed, with due emphasis on the efficient determination of optimal designs. The modelling of devices by non-linear lumped reluctance networks is considered, with particular regard to the level of discretization required to produce accurate global quantities. The accuracy of the lumped reluctance technique is assessed by comparison with non-linear finite element analysis. Alternative methods of force
APA, Harvard, Vancouver, ISO, and other styles
23

Patni, Chandra Kumar. "Digital control of permanent magnet motors." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47613.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Shaw, Nicholas Robert. "MRI magnet design using genetic algorithms." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619968.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Bottomley, Jack S. "Self-sensing permanent magnet servo motors." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/14179/.

Full text
Abstract:
The use of Permanent Magnet Synchronous Machines (PMSMs) has become widespread across numerous applications and industries. Their high power density, efficiency and accuracy of control make them excellent choices, leading them to become the industrial standard. Two issues concerning PMSMs use in recent years have been associated with the elevated cost of rare earth materials required for the Permanent Magnet (PM) rotor poles and the reliance on a direct rotor position sensor such as an encoder. PMSMs require an accurate rotor position feedback within the control scheme, traditionally provided
APA, Harvard, Vancouver, ISO, and other styles
26

Kostkova, Patricie. "MAGNET - a dynamic resource management architecture." Thesis, City, University of London, 1999. http://discovery.ucl.ac.uk/10062371/.

Full text
Abstract:
This thesis proposes a new dynamic resource management architecture, Magnet, to meet the requirements of users in flexible and adaptive systems. Computer systems no longer operate in centralized isolated static environments. Technological advances, such as smaller and faster hardware, and higher reliability of networks have resulted in the growth of mobility of computing and the need for run-time reconfigurability. The dynamic management of this diversity of resources is the central issue addressed in this thesis. Applications in environments with frequently changing characteristics are requir
APA, Harvard, Vancouver, ISO, and other styles
27

Schmidt, Martin Jürgen. "Die Ontogenese des Rindergehirnes eine Darstellung mit Hilfe der Magnet-Resonanz-Tomographie und der Magnet-Resonanz-Mikroskopie /." Wettenberg : VVB Laufersweiler, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?idn=980118050.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Strahan, Richard Johnston. "Energy conversion by permanent magnet machines and novel development of the single phase synchronous permanent magnet motor." Thesis, University of Canterbury. Electrical and Electronic Engineering, 1998. http://hdl.handle.net/10092/5602.

Full text
Abstract:
Energy methods are widely used and well understood for determining the torque or force in machines which do not contain permanent magnets. Energy methods are employed to calculate torques or forces of magnetic origin after determination of the energy stored in the electromechanical coupling field. In this thesis, the energy stored in a permanent magnet system is defined, and the energy-coenergy relationship is determined. It is shown how residual magnetism can be incorporated into classical electromechanical coupling theory. It is therefore shown how equations for torques or forces can be deri
APA, Harvard, Vancouver, ISO, and other styles
29

Constantin, Radu Stefan. "Comparative study of surface permanent magnet and interior permanent magnet machines for direct drive wind power application." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/19800/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
30

Kvamme, Edvin. ""Det är som en magnet, en stor stark, vanebildande magnet": En studie av medberoende i svenska självbiografier." Thesis, Uppsala universitet, Sociologiska institutionen, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-296310.

Full text
Abstract:
Medberoende är ett begrepp som används för att beskriva livssituationen för personer som lever nära någon som befinner sig i missbruk. Begreppet myntades i 80-talets USA och har tack vare självhjälpsrörelser och självhjälpslitteratur för anhöriga till missbrukare fått stor spridning. Sedan 90-talet används medberoende-begreppet även i Sverige. Medberoende har ofta definierats som en sjukdom eller en diagnos likvärdig existerande beroendediagnoser. Trots att medberoende idag inte är en formell diagnos har medberoende blivit en del av hur allmänheten förstår vad det innebär att vara anhörig till
APA, Harvard, Vancouver, ISO, and other styles
31

Han, Qinghua. "ANALYSIS AND MODELING OF THE EDS MAGLEV SYSTEM BASED ON THE HALBACH PERMANENT MAGNET ARRAY." Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4381.

Full text
Abstract:
Electro-dynamic suspension (EDS) Magnetic levitation (Maglev) with its advantage in maintenance, safety, efficiency, speed, and noise is regarded as a leading candidate for the next generation transportation / space launch assist system. The Halbach array due to its unique magnetic field feature has been widely used in various applications. The EDS system using Halbach arrays leads to the potential EDS system without super-conductor (SC) technology. In this thesis, the Halbach array magnetic field and the dynamics of a novel Halbach array EDS Maglev system were considered. The practical Halbac
APA, Harvard, Vancouver, ISO, and other styles
32

Liu, Fang Yuan, and Fang Yuan Liu. "The Impact of Mariachi Education on Academic Achievement in Tucson High Magnet School and Pueblo Magnet High School." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/626143.

Full text
Abstract:
Since the 1960s and in reaction to its increasing popularity within Latino populations in the U.S., mariachi has become a common component of curriculum-based music courses in a growing number of public schools. Even though one of the principal purposes for the existence of mariachi programs is to improve students’ academic performance, music scholars have yet to address how mariachi education encourages higher academic achievement. On the other hand, anthropological educators argue that children underperform in school due to cultural difference or cultural mismatch; therefore, it is necessary
APA, Harvard, Vancouver, ISO, and other styles
33

Baloga-Altieri, Bonnie L. "Comparison of staff nurse perceptions of nurse executive and nurse manager leadership in magnet and non-magnet hospitals." Click here for download, 2008. http://proquest.umi.com/pqdweb?did=1597607751&sid=1&Fmt=2&clientId=3260&RQT=309&VName=PQD.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Øvrebø, Sigurd. "Sensorless Control of Permanent Magnet Synchronous Machines." Doctoral thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1793.

Full text
Abstract:
<p>As the cost for permanent magnets are decreasing and the quality of the magnets are increasing the Permanent Magnet Synchronous Machine (PMSM) are becoming more popular. The PMSM is superior to induction machines both in torque per kilograms and efficiency. Typical applications for these machines are applications where machine volume or efficiency is important. In order to control a PMSM the rotor position needs to be known. This can be obtained by usage of sensor or by usage of a sensorless control scheme. Sensorless Control schemes typically divide into two categories; schemes that give g
APA, Harvard, Vancouver, ISO, and other styles
35

Parsa, Leila. "Performance improvement of permanent magnet ac motors." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2419.

Full text
Abstract:
Multi-phase motors have several advantages over the traditional three-phase motors. In this study, the additional degrees of freedom available in five-phase permanent magnet motors have been used for three purposes: 1) enhancing the torque producing capability of the motor, 2) improving the reliability of the system, and 3) better adjusting of the torque and flux linkages of the five-phase direct torque controlled system. 1) Due to the fact that space and time harmonics of the same orders will contribute positively to output torque, a five-phase permanent magnet motor with quasi-rectangular ba
APA, Harvard, Vancouver, ISO, and other styles
36

Kulkarni, Sameer Shripad. "Design of permanent magnet axial flux alternators." Thesis, Imperial College London, 1997. http://hdl.handle.net/10044/1/8867.

Full text
APA, Harvard, Vancouver, ISO, and other styles
37

Kota, Naga Purna Kiran Kumar. "Analysis of Magnet Wire Life-time Characteristics." MSSTATE, 2005. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11022005-142744/.

Full text
Abstract:
Magnet wires find many applications in modern world. Magnet wires used for the electrical insulation in fly-back transformers, solenoids, sensors, adjustable speed drives etc. are subjected to multistress aging factors such as electrical (high voltage, high frequency), thermal and other environmental stresses. Due to the action of these aging factors degradation and aging of the insulation will occur and thereby lead to reduced life-time or premature failure. In order to identify the most important factors affecting the life-time of the electrical insulation, the insulation must be evaluated u
APA, Harvard, Vancouver, ISO, and other styles
38

Ng, Kong. "Electromagnetic losses in brushless permanent magnet machines." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.579745.

Full text
APA, Harvard, Vancouver, ISO, and other styles
39

Arvidsson, Amanda. "Generic Control of Permanent Magnet Synchronous Motors." Thesis, Linköpings universitet, Fysik och elektroteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-110898.

Full text
APA, Harvard, Vancouver, ISO, and other styles
40

Dynge, Martin Steen-Nilsen. "Subsea Permanent Magnet Motor with Damper winding." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-27238.

Full text
Abstract:
Permanent Magnet (PM) machines can have difficulties dealing with unstable loads, which in worst case can make the machine to step-out of synchronous speed. This problem can be avoided by equipping the rotor with damper windings. During load variation the damper winding will induce a torque to dampen the impact of the load variation. To investigate the effects from using damper windings a numerical model of a PM machine was developed and studied in this thesis. The model is intended to operate with regards to load torque and the stator field. The stator configuration which was used in this the
APA, Harvard, Vancouver, ISO, and other styles
41

Pothi, Nattapong. "Control of hybrid-excited permanent magnet machines." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/13947/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

Judge, Andy. "Air Gap Elimination in Permanent Magnet Machines." Digital WPI, 2011. https://digitalcommons.wpi.edu/etd-dissertations/123.

Full text
Abstract:
In traditional Permanent Magnet Machines, such as electric motors and generators, power is transmitted by magnetic flux passing through an air gap, which has a very low magnetic permeability, limiting performance. However, reducing the air gap through traditional means carries risks in manufacturing, with tight tolerances and associated costs, and reliability, with thermal and dynamic effects requiring adequate clearance. Using a magnetically permeable, high dielectric strength material has the potential to improve magnetic performance, while at the same time offering performance advantages
APA, Harvard, Vancouver, ISO, and other styles
43

Petelina, Nina. "Hydrodynamics of magnet-coil actuated robotic fish." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112550.

Full text
Abstract:
Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (page 44).<br>The hydrodynamics of two robotic fish were analyzed: a low cost toy robotic fish for developing live fish experimental techniques, HEXBUG(TM) Aquabot, and a low cost robotic fish for swarm robotics experiments, Scuba Fish. Both of these robotic fish use a magnet-coil actuation method in order to create caudal fin motion. A velocity imaging technique,, Particle Image Velocimetry (PIV), was used in order to
APA, Harvard, Vancouver, ISO, and other styles
44

Parisi, Thaís Cristina de Hollanda. "Magnet Recognition Program: revisão integrativa de literatura." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/7/7140/tde-26062015-140838/.

Full text
Abstract:
Introdução: As instituições de saúde trabalham, incansavelmente, em prol da melhoria da qualidade dos serviços prestados e a enfermagem, como integrante desses serviços, busca, constantemente, programas que acarretem melhores resultados assistenciais e com isso a segurança do paciente. Dentre esses programas destaca-se o Magnet Recognition Program, desenvolvido pela American Nurses Credentialing Center- ANCC, o qual visa acreditar os estabelecimentos de saúde com excelência na prática de enfermagem. Objetivo: Analisar a produção científica acerca do processo de implementação do Magnet Recognit
APA, Harvard, Vancouver, ISO, and other styles
45

Mantala, Chawanakorn. "Sensorless control of brushless permanent magnet motors." Thesis, University of Bolton, 2013. http://ubir.bolton.ac.uk/625/.

Full text
Abstract:
In this thesis, a sensorless control method of permanent magnet synchronous machines (PMSMs), whose machine neutral points are accessible, for all speeds and at standstill is proposed, researched and developed. The sensorless method is called Direct Flux Control (DFC). The different voltages between a machine neutral point and an artificial neutral point are required for the DFC method. These voltages are used to extract flux linkage signals as voltage signals, which are necessary to approximate electrical rotor positions by manipulating the flux linkage signals. The DFC method is a continuous
APA, Harvard, Vancouver, ISO, and other styles
46

Al-Adsani, Ahmad Saad. "Hybrid permanent magnet machines for electric vehicles." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/hybrid-permanent-magnet-machines-for-electric-vehicles(457bd49f-4e9c-4f9b-8436-589ab5e2d02d).html.

Full text
Abstract:
In this research study, the feasibility of using one of the Hybrid Permanent Magnet (HPM) machine topologies acting as a generator with a passive rectification stage is considered. The primary application area is in the power-train of a series hybrid electric vehicle where the concept will be considered as an alternative to brushless PM machines interfacing to the vehicle power-train via active power electronic converters. The electro-magnetic design of the two main parts in the selected HPM generator topology and their individual system behaviour at normal and rated conditions will be studied
APA, Harvard, Vancouver, ISO, and other styles
47

Ede, Jason David. "High-speed permanent magnet brushless DC motors." Thesis, University of Sheffield, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719807.

Full text
APA, Harvard, Vancouver, ISO, and other styles
48

Evans, David. "Novel partitioned stator permanent magnet brushless machines." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/8605/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
49

Shah, Dhruv. "Sensorless control of permanent magnet synchronous motor." Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112040.

Full text
Abstract:
Nous proposons dans ces travaux, une solution aux problèmes de longue date posés par le control sans capteur d’une machine électrique. Cette solution consiste à élaborer un contrôleur asymptotiquement stable qui régule la vitesse du moteur en mesurant uniquement les coordonnées électriques. Nous l’avons appliqué à un moteur synchrone à aimant permanent non saillant, perturbé par un couple de charge constant non connu. Le schéma proposé est un observateur non linéaire d’ordre 4, basé sur le control qui ne dépend pas d’opérations non robustes intrinsèques au système, comme l’intégration de boucl
APA, Harvard, Vancouver, ISO, and other styles
50

Lwin, Mark. "The dynamic compaction of the metastable hard magnet powder Sm!b2!sFe!b17!sNx to form bulk magnets." Thesis, Queensland University of Technology, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'Magnet' for other source types:
Journal articles Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography