Relevant bibliographies by topics / Permanent magnets

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Permanent magnets'

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

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Journal articles on the topic "Permanent magnets"

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Dong, S. X., B. Li, B. S. Zhang, X. Q. Wang, and G. Y. Feng. "Design of A Permanent Quadrupole Magnet with Adjustable Magnetic Field Gradient." Journal of Physics: Conference Series 2687, no. 2 (2024): 022029. http://dx.doi.org/10.1088/1742-6596/2687/2/022029.

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Abstract As compared to traditional magnets, permanent magnets can effectively reduce energy consumption and eliminate the impact of current ripple and the water cooling system on beam current. The use of permanent magnets in accelerators has become a new trend as permanent magnet technology has advanced. In HALF (Hefei Advanced Light Facility), we have designed a permanent magnet based on the quadrupole magnet, and the central magnetic field strength of the permanent magnet can be adjusted, indicating that single or multiple permanent magnets can be developed to replace different sizes of qua
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Vannest, Jeremiah, and Julia Zhang. "Partially Segmented Permanent-Magnet Losses in Interior Permanent-Magnet Motors." Energies 18, no. 11 (2025): 2879. https://doi.org/10.3390/en18112879.

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Permanent-magnet losses in interior permanent-magnet (IPM) motors can result in high magnet temperatures and potential demagnetization. This study investigates using partially segmented magnets as an alternative to traditional segmented magnets to reduce these losses. Partial segmentation involves cutting slots into the magnet to redirect the eddy current path and reduce losses. The research explores analytical and finite element modeling of eddy current losses in partially segmented magnets in IPM machines. Various configurations and orientations of partial segmentation were examined to asses
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Amjadian, Mohsen, and Anil K. Agrawal. "Planar arrangement of permanent magnets in design of a magneto-solid damper by finite element method." Journal of Intelligent Material Systems and Structures 31, no. 7 (2020): 998–1014. http://dx.doi.org/10.1177/1045389x20905968.

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This article studies the energy dissipation mechanism of a proposed magneto-solid damper using a three-dimensional finite element model developed in COMSOL Multiphysics software. The energy dissipation mechanism of the magneto-solid damper dissipates energy through combined actions of friction and eddy current damping. The key components of the magneto-solid damper are a steel plate, two copper plates placed on two sides of the steel plate in parallel, and two planar arrays of permanent magnets each one placed between the steel plate and one of the copper plates. These arrays are kept away fro
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Zhang, Yuyang, Yonggang Leng, Hao Zhang, et al. "Comparative study on equivalent models calculating magnetic force between permanent magnets." Journal of Intelligent Manufacturing and Special Equipment 1, no. 1 (2020): 43–65. http://dx.doi.org/10.1108/jimse-09-2020-0009.

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PurposeAn appropriate equivalent model is the key to the effective analysis of the system and structure in which permanent magnet takes part. At present, there are several equivalent models for calculating the interacting magnetic force between permanent magnets including magnetizing current, magnetic charge and magnetic dipole–dipole model. How to choose the most appropriate and efficient model still needs further discussion.Design/methodology/approachThis paper chooses cuboid, cylindrical and spherical permanent magnets as calculating objects to investigate the detailed calculation procedure
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Kaňuch, Ján, and Želmíra Ferková. "Design and simulation of disk stepper motor with permanent magnets." Archives of Electrical Engineering 62, no. 2 (2013): 281–88. http://dx.doi.org/10.2478/aee-2013-0022.

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Abstract In this paper the design and the magneto-static simulation of axial-flux permanent- magnet stepper motor with the disc type rotor is presented. Disk motors are particularly suitable for electrical vehicles, robots, valve control, pumps, centrifuges, fans, machine tools and manufacturing. The brushless machine with axial flux and permanent magnets, also called the disc-type machine, is an interesting alternative to its cylindrical radial flux counterpart due to the disk shape, compact construction and high torque density. This paper describes a design of four phase microstepping motor
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Idayanti, Novrita, Azwar Manaf, and Dedi Dedi. "Magnet Nanokomposit Sebagai Magnet Permanen Masa Depan [Nanocomposite Magnets as Future Permanent Magnets]." Metalurgi 33, no. 1 (2018): 1. http://dx.doi.org/10.14203/metalurgi.v33i1.433.

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Hunkun, Jiao, and Oleg Avrunin. "Feasibility analysis of implant movement along arc trajectory under non-contact control in magnetic stereotaxic system." Innovative Technologies and Scientific Solutions for Industries, no. 3(25) (September 30, 2023): 174–82. http://dx.doi.org/10.30837/itssi.2023.25.174.

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In this paper, the non-contact control of magnetic implants by changing the external magnetic field in the magnetic stereotaxic system is introduced, and the feasibility of making them move along the arc trajectory is analyzed. Through COMSOL software, the process of moving the miniature magnetic implant along the arc trajectory was simulated, the change of the micro-magnetic implant trajectory after the external magnetic field was changed, the relative position relationship between the large permanent magnets was determined, and the mechanical analysis of the miniature magnetic implant moving
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Ma, Jun. "The Effect of the Horizontal Distance between the Permanent Magnets on the Levitation Force in Hybrid Magnetic Levitation System." Advanced Materials Research 750-752 (August 2013): 987–90. http://dx.doi.org/10.4028/www.scientific.net/amr.750-752.987.

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It has been investigated that the interaction force in hybrid magnetic levitation systems with a GdBCO bulk superconductor and a permanent magnet system and two permanent magnets (PM2) and two cubic permanent magnets (PM3) system in their coaxial configuration at liquid nitrogen temperature. A single-domain GdBCO sample is of 20mm and 10mm in thickness, the permanent magnet PM1 is of rectangular parallelepiped shape, the permanent magnets PM2 and PM3 are of cubic shape; the system placed on the middle of system and their coaxial configuration; It is found that the maximum levitation force decr
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Zhu, Caoxiang, Kenneth Hammond, Adam Rutkowski, et al. "PM4Stell: A prototype permanent magnet stellarator structure." Physics of Plasmas 29, no. 11 (2022): 112501. http://dx.doi.org/10.1063/5.0102754.

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Permanent magnets provide a possible solution to simplify complicated stellarator coils. A prototype permanent magnet stellarator structure, PM4Stell, has been funded to demonstrate the technical feasibility of using permanent magnets to create the shaping field of a stellarator. Permanent magnets in uniform cubes with three polarization directions will be carefully placed to generate the required magnetic field for a National Compact Stellarator eXperiment-like equilibrium together with planar toroidal field coils. Discrete magnets will be glued together and inserted into a “post-office-box-l
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Sun, R. X., Z. G. Deng, Y. F. Gou, et al. "Feasibility of low-cost magnetic rail designs by integrating ferrite magnets and NdFeB magnets for HTS Maglev systems." International Journal of Modern Physics B 29, no. 25n26 (2015): 1542043. http://dx.doi.org/10.1142/s0217979215420436.

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Permanent magnet guideway (PMG) is an indispensable part of high temperature superconducting (HTS) Maglev systems. Present PMGs are made of NdFeB magnets with excellent performance and cost much. As another permanent magnet material, the ferrite magnet is weak at magnetic energy product and coercive force, but inexpensive. So, it is a possible way to integrate the ferrite and NdFeB magnets for cutting down the cost of present PMGs. In the paper, the equivalent on magnetic field intensity between ferrite magnets and NdFeB magnets was evaluated by finite element simulation. According to the calc
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Dissertations / Theses on the topic "Permanent magnets"

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DAMENTO, MICHAEL ANTHONY. "DETECTION OF MAGNETIZATION REVERSAL IN A NEODYMIUM-IRON-BORON MAGNET USING A HALL-EFFECT MICROPROBE." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183945.

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Magnetization processes in a sintered Nd-Fe-B permanent magnet (NEOMAX-35) were examined on a small scale using a Hall-effect microprobe with an active area 75 μm on a side. Probes were made by evaporating bismuth through a stencil mask onto glass slides. Experiments were performed by placing a probe onto the polished pole face of a Nd-Fe-B magnet and inserting the probe-magnet assembly into an electromagnet. Barkhausen steps, indicating rapid domain wall motion, were observed (superimposed upon the blank probe signal) in the demagnetization of a fully magnetized magnet. Magnetization traces f
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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.

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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
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Torreblanca, Humberto. "Multitube helicon source with permanent magnets." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1563028441&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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CHO, HYOUNG JIN. "MICROMACHINED PERMANENT MAGNETS AND THEIR MEMS APPLICATIONS." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1014839747.

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Hilton, Geoffrey. "The analysis of magnetic drives using rare earth permanent magnets." Thesis, University of Sunderland, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368123.

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Pollard, Robert James. "The microstructure and magnetic properties of NdFeB based permanent magnets." Thesis, University of Salford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328260.

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Tituana, Luis Rodrigo. "IMPLEMENTATION OF A PLANAR MAGNETIC MANIPULATOR WITH ROTATABLE PERMANENT MAGNETS." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/theses/2664.

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The development of new techniques for control of magnetic objects by external magnetic fields has been in constant improvement. These advancements range from the design and fabrication of magnetic nanoparticles to design and control of actuators that enable their manipulation. The ability to guide such magnetic objects at a distance without any direct mechanical contact is an attractive feature with great potential in medical applications. Magnetic fields are not distorted by their interaction with nonmagnetic materials, like those in the human body; and pose no harm to living tissues, which m
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Borghi, Chiara Caterina <1986&gt. "Continuous-Flow Magnetic Separation with Permanent Magnets for Water Treatment." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6233/1/Borghi_ChiaraCaterina_tesi.pdf.

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More efficient water treatment technologies would decrease the water bodies’ pollution and the actual intake of water resource. The aim of this thesis is an in-depth analysis of the magnetic separation of pollutants from water by means of a continuous-flow magnetic filter subjected to a field gradient produced by permanent magnets. This technique has the potential to improve times and efficiencies of both urban wastewater treatment plants and drinking water treatment plants. It might also substitute industrial wastewater treatments. This technique combines a physico-chemical phase of adsorptio
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Borghi, Chiara Caterina <1986&gt. "Continuous-Flow Magnetic Separation with Permanent Magnets for Water Treatment." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6233/.

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More efficient water treatment technologies would decrease the water bodies’ pollution and the actual intake of water resource. The aim of this thesis is an in-depth analysis of the magnetic separation of pollutants from water by means of a continuous-flow magnetic filter subjected to a field gradient produced by permanent magnets. This technique has the potential to improve times and efficiencies of both urban wastewater treatment plants and drinking water treatment plants. It might also substitute industrial wastewater treatments. This technique combines a physico-chemical phase of adsorptio
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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.

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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
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Books on the topic "Permanent magnets"

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Johnson, Howard R. Discovering magnetism. Permanent Magnet Research Institute, 1990.

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D, Coey J. M., ed. Rare-earth iron permanent magnets. Clarendon Press, 1996.

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Parker, Rollin J. Advances in permanent magnetism. Wiley, 1990.

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United States. National Aeronautics and Space Administration., ed. Makeup and uses of a basic magnet laboratory for characterizing high-temperature permanent magnets. National Aeronautics and Space Administration, 1991.

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McCaig, Malcolm. Permanent magnets in theory and practice. 2nd ed. Pentech, 1987.

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Abele, Manlio G. Structures of permanent magnets: Generation of uniform fields. John Wiley, 1993.

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Burzo, Emil. Magneți permanenți. Editura Academiei Republicii Socialiste România, 1986.

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United States. National Aeronautics and Space Administration., ed. M-H characteristics and demagnetization resistance of samarium-cobalt permanent magnets to 300 C. National Aeronautics and Space Administration, 1992.

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United States. National Aeronautics and Space Administration., ed. M-H characteristics and demagnetization resistance of samarium-cobalt permanent magnets to 300 C. National Aeronautics and Space Administration, 1992.

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McCaig, Malcolm. Permanent magnets in theory and practice. 2nd ed. Pentech, 1987.

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Book chapters on the topic "Permanent magnets"

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Buschow, K. H. J., and F. R. de Boer. "Permanent Magnets." In Physics of Magnetism and Magnetic Materials. Springer US, 2003. http://dx.doi.org/10.1007/0-306-48408-0_12.

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Salon, S. J. "Permanent Magnets." In Power Electronics and Power Systems. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-2349-9_3.

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Rossignol, Michel-François, and Jean-Paul Yonnet. "Permanent magnets." In Magnetism. Springer New York, 2005. http://dx.doi.org/10.1007/978-0-387-23063-4_1.

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Asti, G., and M. Solzi. "Permanent Magnets." In Applied Magnetism. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-015-8263-6_6.

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Gieras, Jacek F., and Jian-Xin Shen. "Permanent Magnets." In Modern Permanent Magnet Electric Machines. CRC Press, 2022. http://dx.doi.org/10.1201/9781003103073-3.

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Papaefthymiou, Georgia C. "Permanent Magnets." In Nanomagnetism. Chapman and Hall/CRC, 2022. http://dx.doi.org/10.1201/9781315157016-15.

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de Lacheisserie, Étienne du Trémolet, Damien Gignoux, and Michel Schlenker. "Permanent Magnets." In Magnetism. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-1129-8_1.

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Kuroda, Jumpei, Kaito Kimura, Ryutaro Ono, et al. "Study on Linear Actuators for Intake and Exhaust Systems of Internal Combustion Engines (Analytical Consideration of Thrust Characteristics by Permanent Magnet Array)." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-70392-8_3.

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AbstractTo enhance internal combustion engine performance, this study focuses on developing an electric valve drive system utilizing linear actuators for intake and exhaust valve control. The linear actuator, comprising a movable coil and a fixed permanent magnet, operates based on the principle of the Lorentz force. Unlike traditional magnetic circuits, this actuator employs five permanent magnets with different magnetization directions to concentrate the flux on the coil. In this study, multiple models with varying ratios of these permanent magnets were created and analyzed using finite elem
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Walter, Richard, and Brandon Verbrugge. "Permanent Magnets in Power Tools." In Bonded Magnets. Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-007-1090-0_12.

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Turowski, Janusz, and Stawomir Wiak. "Magnetic Materials and Permanent Magnets." In Modern Electrical Drives. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9387-8_3.

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Conference papers on the topic "Permanent magnets"

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Zadorozhniuk, Daniil, Pia Lindh, Arash Allahyari, Ilya Petrov, and Juha Pyrhönen. "Surface vs. Embedded Magnets in Permanent Magnet Outer Rotor Synchronous Motors." In 2024 International Conference on Electrical Machines (ICEM). IEEE, 2024. http://dx.doi.org/10.1109/icem60801.2024.10700150.

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Ogrizek, Pavel, Mitja Garmut, and Martin Petrun. "Impact of Partially Demagnetized Permanent Magnets on Operating Range of an Interior Permanent Magnet Synchronous Machine." In 2024 27th International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2024. https://doi.org/10.23919/icems60997.2024.10921469.

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Song, Pan, Xiaoying Tang, ShaoJun Wang, Bin Ren, Yantian Zuo, and Jielu Wang. "A Study on the Magnetic Distribution of Nd-Fe-B Permanent Magnets in Pipeline in Line Inspection Tool." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84529.

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The pressure pipeline in line inspection technology is the most effective nondestructive testing method to detect the quality of buried oil and gas pipelines at present. In line inspection tool usually uses magnetic flux leakage (MFL) technology to detect the change of leakage magnetic field to detect pipeline defects. Permanent magnets magnetize the wall of the pipeline as an excitation. During the detection process, the magnetic field performance of permanent magnets is required to be high. At the same time, the magnetic performance of the permanent magnet in the magnetic cleaning pipe also
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Eirich, Max, Yuji Ishino, Masaya Takasaki, and Takeshi Mizuno. "Active Stabilization of Repulsive Magnetic Bearing by Using Independent Motion Control of Permanent Magnets." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-35134.

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This paper investigates the control system design of magnetic forces using independent motion control of permanent magnets. In the permanent magnet bearing system, the radial motions of the rotor are passively supported by repulsive forces between ring-shape permanent magnets. The experimental results demonstrate that non contact levitation is achieved by independently PD controlled axial motion of permanent magnets driven by voice coil motors (VCM).
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Overstreet, Ross W., George T. Flowers, and Gyorgy Szasz. "Design and Testing of a Permanent Magnet Biased Active Magnetic Bearing." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/vib-8282.

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Abstract Magnetic bearings provide rotor support without direct contact. There is a great deal of current interest in using magnetic bearings for active vibration control. Conventional designs use electrical current to provide the bias flux, which is an integral feature of most magnetic bearing control strategies. Permanent magnet biased systems are a relatively recent innovation in the field of magnetic bearings. The bias flux is supplied by permanent magnets (rather than electrically) allowing for significant decreases in resistance related energy losses. The use of permanent magnet biasing
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Todorova, Miglenna, Valentin Mateev, and Iliana Marinova. "Permanent magnets for a magnetic gear." In 2016 19th International Symposium on Electrical Apparatus and Technologies (SIELA). IEEE, 2016. http://dx.doi.org/10.1109/siela.2016.7543056.

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Fernandez, Daniel, Maria Martinez, David Reigosa, Juan Guerrero, Carlos Suarez, and Fernando Briz. "Permanent Magnets Aging in Variable Flux Permanent Magnet Synchronous Machines." In 2018 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2018. http://dx.doi.org/10.1109/ecce.2018.8558075.

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Yang, Hyeon-Ho, and Jae-Hung Han. "Design of Revolute Joint With Bi-Stability Using Permanent Magnets." In ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2419.

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Abstract Bi-stable mechanisms are systems with two distinct stable equilibrium positions within their range of operation. They are capable of steadily staying in positions without external power input and require less energy to move to the next stable state because of their snap-through behavior. Diverse applications including switches, deployable structures, and reconfigurable robots can benefit from bi-stability characteristics. However, the complexity of implementation and the limitation of structure configuration have made it difficult to apply conventional bi-stable mechanisms to the stru
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Walmer, Marlin S., Christina H. Chen, and Michael H. Walmer. "A New Class of Permanent Magnetic Materials for High Temperature Applications." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0412.

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A new class of Sm2TM17 type permanent magnetic materials has been developed to meet the needs of applications at high temperatures. These magnets have high to moderate energy product (BH)max, high intrinsic coercivity iHc with low temperature coefficient of iHc, and straight-line demagnetization curves up to 550°C. A straight-line demagnetization curve provides greater design flexibility and facilitates reduced size and weight of magnetic circuits. A straight-line demagnetization curve is even more important for dynamic and highly loaded applications where high demagnetization forces are encou
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Du, Zhentao S., and Thomas A. Lipo. "Interior permanent magnet machines with rare earth and ferrite permanent magnets." In 2017 IEEE International Electric Machines and Drives Conference (IEMDC). IEEE, 2017. http://dx.doi.org/10.1109/iemdc.2017.8002189.

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Reports on the topic "Permanent magnets"

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Wipf, Stefan L., and Henry L. Laquer. Superconducting Permanent Magnets. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada218944.

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Raitses, Yevgeny, Enrique Merino, and Nathaniel J. Fisch. Cylindrical Hall Thrusters with Permanent Magnets. Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/990750.

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Spencer, James E. PERMANENT MAGNETS FOR RADIATION DAMAGE STUDIES. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/813149.

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Hammond, Kenneth, David Gates, Robert Mercurio, et al. Stellarator Simplification using Permanent Magnets (PM4Stell). Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/1963786.

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Hammond, Kenneth, David Gates, Robert Mercurio, et al. Stellarator Simplification using Permanent Magnets (PM4Stell). Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/2403316.

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Andreescu, R., and M. J. O'Shea. Hard Magnetic Properties of Multilayered SmCo/Co Permanent Magnets. Defense Technical Information Center, 2001. http://dx.doi.org/10.21236/ada398436.

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Freedman, Danna, and Alison Altman. Permanent Magnets Featuring Heavy Main Group Elements for Magnetic Anisotropy. Office of Scientific and Technical Information (OSTI), 2022. http://dx.doi.org/10.2172/1899082.

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Paranthaman, M. Parans, Niyanth Sridharan, Fred A. List, S. S. Babu, Ryan R. Dehoff, and Steve Constantinides. Additive Manufacturing of Near-net Shaped Permanent Magnets. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1311265.

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Lee, E. P., and M. Vella. Perfect 2-d quadrupole fields from permanent magnets. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/231656.

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Chelluri, Bhanumathi, and Edward Knoth. High Performance PrFeB Permanent Magnets through Novel Pulse Alignment and Compaction Method for Cryogenic Permanent Magnet Undulators (CPMU). Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1428153.

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