Academic literature on the topic 'Vector magnetization characteristics'

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Journal articles on the topic "Vector magnetization characteristics"

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Xiao, Xiao, Fabian Müller, Martin Marco Nell, and Kay Hameyer. "Modeling anisotropic magnetic hysteresis properties with vector stop model by using finite element method." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 41, no. 2 (2021): 752–63. http://dx.doi.org/10.1108/compel-06-2021-0213.

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Purpose This paper aims to use a history-dependent vector stop hysteresis model incorporated into a two dimensional finite elements (FE) simulation environment to solve the magnetic field problems in electrical machines. The vector stop hysteresis model is valid for representing the anisotropic magnetization characteristics of electrical steel sheets. Comparisons of the simulated results with measurements show that the model is well appropriate for the simulation of electrical machines with alternating, rotating and harmonic magnetic flux densities. Design/methodology/approach The anisotropy o
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S., T. Tolmachev, and V. Il'chenko A. "THE RECIPROCITY PRINCIPLE FOR A NONLINEAR ANISOTROPIC MEDIUM WITHOUT HYSTERESIS: THEORY AND PRACTICE OF APPLICATION." Electrical engineering & electromechanics, no. 2 (April 16, 2020): 40–45. https://doi.org/10.20998/2074-272X.2020.2.06.

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<em>The construction of the correct vector material equations for nonlinear anisotropic soft magnetic materials remains one of the main reserves for increasing the accuracy of mathematical models in solving magnetostatic problems in the field formulation. The aim of the work is to establish asymptotic expressions for the reciprocity principle, which is a fundamental property of reversible magnetization processes of nonlinear anisotropic media, and to use the obtained results to optimize the computational process when constructing the vector magnetization characteristic and differential permeab
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Юсипова, Ю. А. "Частота и быстродействие спинового вентиля с планарной анизотропией слоев". Физика твердого тела 62, № 9 (2020): 1361. http://dx.doi.org/10.21883/ftt.2020.09.49754.29h.

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The dynamics of the magnetization vector in the free layer of a layered spin-valve structure was simulated. As materials for the free and fixed layers, six magnetically soft ferromagnets with longitudinal anisotropy were considered. The types of magnetization dynamics that are of practical interest for MRAM and HMDD (switching of the magnetization vector), STNO (stable precession of the magnetization vector), and the base element PSL (switching of the magnetization vector with two probable outcomes) were highlighted. The ranges of currents and fields corresponding to these operating modes of t
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Ma, Guoqing, Lingwei Meng, and Lili Li. "Fast Magnetization Vector Inversion Method with Undulating Observation Surface in Spherical Coordinate for Revealing Lunar Weak Magnetic Anomaly Feature." Remote Sensing 16, no. 2 (2024): 432. http://dx.doi.org/10.3390/rs16020432.

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The three-dimensional magnetic vector structure (magnetization intensity and direction) of the planet can be effectively used to analyze the characteristics of its formation and operation. However, the quick acquisition of a large region of the magnetic vector structure of the planet with bigger observation surfaces undulation is hard and indispensable. We firstly proposed a fast magnetization vector inversion method for the inversion of a magnetic anomaly with the undulating observation surfaces in the spherical coordinate system, which first transforms the data to a plane when the data are d
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Guskov, Vladimir Olegovich, Aleksandr Vasil'evich Saushev, Veniamin Francevich Samoseiko, and Andrey Viktorovich Lavin. "Maximizing the torque of an asynchronous motor taking into account losses power when limited by the energy converter." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2024, no. 3 (2024): 91–97. http://dx.doi.org/10.24143/2073-1574-2024-3-91-97.

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The issues of optimal control of an asynchronous motor according to the criterion of the maximum of its electromagnetic torque are considered. It is shown that electric energy converters feeding the windings of electric machines have semiconductor switches in their composition, the characteristics of which are subject to known limitations. One of these characteristics for a semiconductor key is the value of the maximum current that it can pass through itself for a long time without breaking down. The electromagnetic torque of an asynchronous electric motor with vector control is proportional t
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Leidhold, R., D. Kaluhin, and O. Tolochko. "EXPERIMENTAL RESEARCH OF THE MAGNETIZATION AND DEMAGNETIZATION PROCESSES OF THE VECTOR-CONTROLLED INDUCTION MOTOR." Tekhnichna Elektrodynamika 2024, no. 6 (2024): 44–49. http://dx.doi.org/10.15407/techned2024.06.044.

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Experimental research of the processes of magnetization and demagnetization for the motionless vector-controlled induction motor was performed, according to a linear law with a variation in the duration of these processes. The methodology of research during which the orthogonal components of the stator and rotor currents were recorded in the rotor flux reference frame, the rotor flux module and the energy of the total losses in the stator and rotor copper is described. The main characteristics and parameters of laboratory equipment and facilities are given. From the point of view of minimizing
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Shi, Minxia, Teng Li, Shuai Yuan, Leran Zhang, Yuzheng Ma, and Yi Gao. "Iron Loss and Temperature Rise Analysis of a Transformer Core Considering Vector Magnetic Hysteresis Characteristics under Direct Current Bias." Materials 17, no. 15 (2024): 3767. http://dx.doi.org/10.3390/ma17153767.

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Direct current (DC) bias induced by the DC transmission and geomagnetically induced current is a critical factor in the abnormal operation of electrical equipment and is widely used in the field of power transmission and distribution system state evaluation. As the main affected component, the vector magnetization state of a transformer core under DC bias has rarely been studied, resulting in inaccurate transformer operation state estimations. In this paper, a dynamic vector hysteresis model that considers the impact of rotating and DC-biased fields is introduced into the numerical analysis to
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Wakabayashi, Daisuke, Takashi Todaka, and Masato Enokizono. "Measurement of Three-Dimensional Magnetostriction on Grain-Oriented Electrical Steel Sheet." Journal of Electrical Engineering 62, no. 3 (2011): 153–57. http://dx.doi.org/10.2478/v10187-011-0025-z.

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Measurement of Three-Dimensional Magnetostriction on Grain-Oriented Electrical Steel Sheet This paper deals with the magnetostriction of a grain-oriented electrical steel sheet measured by using the two-dimensional vector magnetic property measurement system and a three-axial strain gage. The magnetostrictions in arbitrary direction are calculated with the measured strain tensors. The magnetostriction characteristics were changed depending on the magnetization process according to the exciting magnetic flux density and the exciting direction. In this paper, we make clear the relationship among
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Ishikawa, Takeo, and Naoto Igarashi. "Failure Diagnosis of Demagnetization in Interior Permanent Magnet Synchronous Motors Using Vibration Characteristics." Applied Sciences 9, no. 15 (2019): 3111. http://dx.doi.org/10.3390/app9153111.

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The detection of a precursor to the demagnetization of permanent magnets is very important because a high degree of reliability is necessary in permanent magnet synchronous motors (PMSMs). This paper investigated the diagnosis of very slight PM demagnetization. A part of the permanent magnet was altered to non-magnetic material so as to mimic the effect of demagnetization. The vibration characteristics were clarified for low demagnetization in PMSMs driven under vector control by experiments and 3D finite element (FE) analysis. We found that the amplitude of some components of the vibration wa
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Rezayee, Mohammad Hakim, Ahamd Qasim Akbar, Torabaz Poyesh, Ezatullah Rawnaq, Khair Mohammad Samim, and Hideki Mizunaga. "3D Geophysical Modeling Based on Multi-Scale Edge Detection, Magnetic Susceptibility Inversion, and Magnetization Vector Inversion in Panjshir, Afghanistan to Detect Probabilistic Fe-Polymetallic Bearing Zone." Geosciences 13, no. 12 (2023): 376. http://dx.doi.org/10.3390/geosciences13120376.

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The Panjshir Fe-Polymetallic ore deposit is a valuable geological resource in Afghanistan, rich in iron and multiple essential metallic minerals, with substantial potential for industrial development. The exploration phase faces challenges related to the complex geological settings, high variability of mineral compositions, and the need for advanced geophysical techniques to accurately locate and assess valuable metallic resources. Considering the strong magnetic characteristics exhibited by Fe-Polymetallic elements, geomagnetic data were employed to analyze and map the likely prospectivity of
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Dissertations / Theses on the topic "Vector magnetization characteristics"

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Мохсен, Аббасиан. "Коаксиально-линейный двигатель с постоянными магнитами в вибрационной системе погружателя строительных элементов". Thesis, Киевский национальный университет строительства и архитектуры, 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/21242.

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Диссертация на соискание учёной степени кандидата технических наук по специальности 05.09.01 – электрические машины и аппараты. – Национальный технический университет Украины "Харьковский политехнический институт" Харьков, 2016. Диссертация посвящена вопросам разработки и исследованию особенностей электромагнитных и электромеханических процессов коаксиально-линейных двигателей с аксиальным и радиальным вектором намагничивания постоянных магнитов для привода рабочего органа погружателя. Рассмотрены конструкции коаксиально-линейных двигателей с постоянными магнитами для привода рабочего органа
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Мохсен, Аббасіан. "Коаксіально-лінійний двигун з постійними магнітами у вібраційній системі занурювача будівельних елементів". Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/21228.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.09.01 – електричні машини й апарати. – Національний технічний університет України "Харківський політехнічний інститут", Харків, 2016. Дисертаційна робота присвячена питанням розробки та дослідження особливостей електромагнітних та електромеханічних процесів коаксіально-лінійних двигунів з аксіальним та радіальним вектором намагнічування постійних магнітів для привода робочого органу занурювача. Запропоновані конструкції коаксіально-лінійних двигунів з постійними магнітами для привода робочого органу занурюва
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Book chapters on the topic "Vector magnetization characteristics"

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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 element analysis conducted with the JMAG software to investigate the thrust characteristics during the reciprocating motion of the actuator. The vector plot of the magnetic flux density shows that the magnetic circuit is predominantly composed of permanent magnets. The average thrust at a 10 mm displacement was approximately 107 N in the largest model. Future studies will aim to design actuators with increased thrust capabilities.
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Freeman, R. "Spin choreography." In Pulsed Magnetic Resonance: NMR, ESR, and Optics. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780198539629.003.0010.

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Abstract Very soon after the initial discovery of nuclear magnetic resonance, E. L. Hahn performed an experiment that, in conceptual originality and elegance, transcended all that had preceded it-the spin echo experiment [1]. Here was an idea to inspire the young scientists reading about NMR for the first time. Not only could oneworkwith these strange new entities called spins, but alsomanipulatethem like a conjuror with a pack of cards. In its original form, experiment was conceptually easier to follow, resembling the opening and closing of a ‘fan’ of vectors confined to the transverse(x-y)plane of the rotating frame. Note that the description of the conventional continuous wave NMR experiments of the time scarcely required this level of sophistication, relying on the steady state solutions of the Bloch equations. To understand spin echoes, one was forced to come to grips with homogeneous and inhomogeneous line broadening, transformation into the rotating frame of reference, and the concept of ‘spin isochromats’. This was a term coined by Abragam [3]. The sample is considered to be made up of a mosaic of volume elements, each small enough that the variation of the applied field intensity across that element could be neglected, but with neighbouring elements in slightly different applied fields due to the spatial inhomogeneity. Each element has a nuclear magnetization with a characteristic precession frequency; this is an isochromat. The total sample magnetization is the resultant of all these isochromatic magnetization vectors. Because the isochromats have different intrinsic frequencies this resultant can change as individual isochromats fan out or come back into alignment. This has proved a valuable idea for describing spin echo experiments.
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Conference papers on the topic "Vector magnetization characteristics"

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Priputnev, P., I. Romanchenko, S. Maltsev, and R. Sobyanin. "Influence of voltage pulse polarity on excitation of high-frequency oscillations in a nonlinear transmission line with saturated ferrite." In 8th International Congress on Energy Fluxes and Radiation Effects. Crossref, 2022. http://dx.doi.org/10.56761/efre2022.s3-p-921201.

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Experimentally and using numerical simulation the process of excitation of high-frequency oscillations in a nonlinear transmission line with saturated ferrite, depending on the polarity of the incident voltage pulse, was studied. As part of the work, an effect was discovered in which the voltage pulses generated at the output of the transmission line depend on the direction of rotation of the magnetization vector of the ferrite filling. The shape and characteristics of these pulses were studied and compared depending on the polarity of the incident voltage pulse.
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Bukhanko, A., and A. Sukstanskii. "Optics of a ferromagnetic superlattice: Dependence optical characteristics on the angle between the magnetization vectors, wave nonreciprocity." In 2008 International Conference on Mathematical Methods in Electromagnetic Theory (MEET). IEEE, 2008. http://dx.doi.org/10.1109/mmet.2008.4581035.

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Wei, Haotian, Shaohua Dong, Yundong Ma, Lushuai Xu, Jiahao Zhao, and Hang Zhang. "Simulation Analysis and Experimental Study on Pipeline Circumferential Crack Detection Based on Residual Magnetism Effect." In ASME 2023 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/pvp2023-105782.

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Abstract A method for crack detection on the surface of pipelines that uses residual magnetic detection technology based on the hysteresis effect after magnetizing the pipeline to magnetic saturation has been developed in this study. Support vector regression (SVR) was employed for quantitative assessment. This paper reviewed the magnetization process of the magnetizer, the generation of residual magnetism effect, and the detection of residual magnetic fields. An experimental and theoretical study examined how the crack size affects residual magnetic anomalies. The simulation results indicated
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КОНСТАНТИНОВ К, М., Д. ТОМШИН М та С. ХОРОШИХ М. "ПЕТРОФИЗИЧЕСКИЕ ОРЕОЛЫ СТРУКТУР ДИАТРЕМОВОЙ АССОЦИАЦИИ". У ГЕОЛОГИЯ И МИНЕРАЛЬНО-СЫРЬЕВЫЕ РЕСУРСЫ СЕВЕРО-ВОСТОКА РОССИИ 2024. Crossref, 2024. http://dx.doi.org/10.53954/9785604990100_128.

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Petro- and paleomagnetic studies of Early Paleozoic rocks of carbonate basement of a number of diamond deposits in the Yakutsk diamondiferous province were carried out to study changes in the values of petrophysical parameters in the zone of dynamic influence of a kimberlite pipe. It is shown that during the formation of kimberlite diatrems accompanied by pulsational, upward-shifting explosions, thermoelastic stress fields characterized by epigenetic changes and related petrophysical aureoles appear in the kimberlite-bearing medium. Naturally, some of these petrophysical aureoles are petromagn
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