Готові списки джерел за темами / Motional Inductance

Добірка наукової літератури з теми "Motional Inductance"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "Motional Inductance"

Wcislik, Miroslaw, Karol Suchenia, and Andrzej Cyganik. "Vectorized Mathematical Model of a Slip-Ring Induction Motor." Energies 13, no. 15 (August 4, 2020): 4015. http://dx.doi.org/10.3390/en13154015.

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The paper deals with the modeling of a slip-ring induction motor. Induction motors are very often used in industry and their suitable model is needed to reduce control and operating costs. The identification process of self and mutual inductances of the stator and rotor, and mutual inductances between them in the function of the rotor rotation angle is presented. The dependence of each inductance on the rotor rotation angle is determined experimentally. The inductance matrix is then formulated. Taking the magnetic energy of the inductances and kinetic energy of the rotor into account, the Lagrange function is defined. Next, the motor motion equations are obtained. After making some algebraic transformations and using the dimensionless variables, the motion equations of electric circuits and of the mechanical equation are written separately in the forms facilitating their solution. The solution was obtained using the Simulink model for the stator and rotor currents in the form of vectors. The simulation was controlled by MATLAB script. The results of the simulation are presented in the form of basic variables time courses and compared with some values calculated with the use Steinmetz model of induction motor. The work is followed by two appendices, which contain procedures for determining the inverted inductance matrix.

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Kinsey, J. E., L. L. Lao, O. Meneghini, J. Candy, P. B. Snyder, and G. M. Staebler. "Equilibrium reconstruction of DIII-D plasmas using predictive modeling of the pressure profile." Physics of Plasmas 29, no. 6 (June 2022): 062502. http://dx.doi.org/10.1063/5.0078935.

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New workflows have been developed for predictive modeling of magnetohydrodynamic (MHD) equilibrium in tokamak plasmas. The goal of this work is to predict the MHD equilibrium in tokamak discharges without having measurements of the kinetic profiles. The workflows include a cold start tool, which constructs all the profiles and power flows needed by transport codes; a Grad–Shafranov equilibrium solver; and various codes for the sources and sinks. For validation purposes, a database of DIII-D tokamak discharges has been constructed that is comprised of scans in the plasma current, toroidal magnetic field, and triangularity. Initial efforts focused on developing a workflow utilizing an empirically derived pressure model tuned to DIII-D discharges with monotonic safety factor profiles. This workflow shows good agreement with experimental kinetic equilibrium calculations, but is limited in that it is a single fluid (equal ion and electron temperatures) model and lacks H-mode pedestal predictions. The best agreement with the H-mode database is obtained using a theory-based workflow utilizing pressure profile predictions from a coupled TGLF turbulent transport and EPED pedestal models together with external magnetics and Motional Stark Effect (MSE) data to construct the equilibrium. Here, we obtain an average root mean square error of 5.1% in the safety factor profile when comparing the predicted and experimental kinetic equilibrium. We also find good agreement with the plasma stored energy, internal inductance, and pressure profiles. Including MSE data in the theory-based workflow results in noticeably improved agreement with the q-profiles in high triangularity discharges in comparison with the results obtained with magnetic data only. The predictive equilibrium workflow is expected to have wide applications in experimental planning, between-shot analysis, and reactor studies.

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Xue, Ming, Qingxin Yang, Chunzhi Li, Pengcheng Zhang, Shuting Ma, and Xin Zhang. "Collaborative Optimization Method of Power and Efficiency for LCC-S Wireless Power Transmission System." Electronics 10, no. 24 (December 12, 2021): 3088. http://dx.doi.org/10.3390/electronics10243088.

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Dynamic wireless charging enables moving equipment such as electric vehicles, robots to be charged in motion, and thus is a research hotspot. The applications in practice, however, suffer from mutual inductance fluctuation due to unavoidable environmental disturbances. In addition, the load also changes during operation, which makes the problem more complicated. This paper analyzes the impacts of equivalent load and mutual inductances variation over the system by LCC-S topology modeling utilizing two-port theory. The optimal load expression is derived. Moreover, a double-sided control strategy enabling optimal efficiency and power adjustment is proposed. Voltage conducting angles on the inverter and rectifier are introduced. The simulation and experimental results verify the proposed method.

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Bernat, Jakub, Jakub Kołota, Sławomir Stępień, and Grzegorz Szymański. "An inductance lookup table application for analysis of reluctance stepper motor model." Archives of Electrical Engineering 60, no. 1 (March 1, 2011): 15–21. http://dx.doi.org/10.2478/v10171-011-0002-y.

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An inductance lookup table application for analysis of reluctance stepper motor model This research presents a method of modeling and numerical simulation of a reluctance stepper motor using reduced finite-element time-stepping technique. In presented model, the circuit equations are reduced to non-stationary differential equations, i.e. the inductance mapping technique is used to find relationship between coil inductance and rotor position. A strongly coupled field-circuit model of the stepper motor is presented. In analyzed model the magnetostatic field partial differential equations are coupled with rotor motion equation and solved simultaneously in each iterative step. The nonlinearity problem is solved using Newton-Raphson method with spline approximation of the B-H curve.

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Lu, S. K. S. "Design of symmetrical polylithic crystal filters having equal motional inductances." Electronics Letters 27, no. 16 (1991): 1456. http://dx.doi.org/10.1049/el:19910912.

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Tian, Hao, and Yuren Zhao. "Coil Inductance Model Based Solenoid on–off Valve Spool Displacement Sensing via Laser Calibration." Sensors 18, no. 12 (December 18, 2018): 4492. http://dx.doi.org/10.3390/s18124492.

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Direct acting solenoid on–off valves are key fluid power components whose efficiency is dependent upon the state of the spool’s axial motion. By sensing the trajectory of the valve spool, more efficient control schemes can be implemented. Therefore, the goal of this study is to derive an analytical model for spool displacement sensing based on coil inductance. First, a mathematical model of the coil inductance as a function of air gap width and lumped magnetic reluctance is derived. Second, to solve the inductance from coil current, an optimization to obtain an initial value based on physical constraints is proposed. Furthermore, an experiment using a laser triangulation sensor is designed to correlate the magnetic reluctance to the air gap. Lastly, using the obtained empirical reluctance model to eliminate unknowns from the proposed air gap-inductance model, the model in atmosphere or hydraulic oil environments was tested. Initial results showed that the proposed model is capable of calculating the spool displacement based on the coil current, and the estimation errors compared to the laser measurement are within ±7% in air environment.

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Bae, Sungryong, and Pilkee Kim. "Load Resistance Optimization of Bi-Stable Electromagnetic Energy Harvester Based on Harmonic Balance." Sensors 21, no. 4 (February 22, 2021): 1505. http://dx.doi.org/10.3390/s21041505.

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In this study, a semi-analytic approach to optimizing the external load resistance of a bi-stable electromagnetic energy harvester is presented based on the harmonic balance method. The harmonic balance analyses for the primary harmonic (period-1T) and two subharmonic (period-3T and 5T) interwell motions of the energy harvester are performed with the Fourier series solutions of the individual motions determined by spectral analyses. For each motion, an optimization problem for maximizing the output power of the energy harvester is formulated based on the harmonic balance solutions and then solved to estimate the optimal external load resistance. The results of a parametric study show that the optimal load resistance significantly depends on the inductive reactance and internal resistance of a solenoid coil––the higher the oscillation frequency of an interwell motion (or the larger the inductance of the coil) is, the larger the optimal load resistance. In particular, when the frequency of the ambient vibration source is relatively high, the non-linear dynamic characteristics of an interwell motion should be considered in the optimization process of the electromagnetic energy harvester. Compared with conventional resistance-matching techniques, the proposed semi-analytic approach could provide a more accurate estimation of the external load resistance.

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Lu, S. K. S. "Erratum: Design of symmetrical polylithic crystal filters having equal motional inductances." Electronics Letters 28, no. 16 (1992): 1562. http://dx.doi.org/10.1049/el:19920991.

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Castrejón, Arturo Mendoza, Herlinda Montiel Sánchez, and Guillermo Alvarez Lucio. "The Domain Dynamic in Fe-Based Amorphous Alloy Ribbons by Means Inductance Spectroscopy." Advanced Materials Research 1083 (January 2015): 21–26. http://dx.doi.org/10.4028/www.scientific.net/amr.1083.21.

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In the present work, a detailed study of the structural relaxation through the complex inductance response by using Inductance Spectroscopy (IS) of Fe-based amorphous ribbons obtained by as quenching ultra-rapid technique, as a function of frequency form 4 to 400 kHz and under thermal treatment during 10, 20, 40, 60, 120 and 180 min, is presented. The analysis of experimental results of IS plots of real (L ́) and imaginary (L ́ ́) inductance show evidence of magnetization processes associated with domain walls: At low fields and low frequencies, L ́ showed a plateau, followed by a dispersion with a relaxation character, the relaxation frequency is about 100 kHz (domain wall bulging). For higher fields, the inductance value depended on the field amplitude (domain wall displacement). As the frequency increased, all the curves merged into the low field plot and exhibited the same relaxation dispersion. The dependence of magnetization processes on the domain wall is determined and interpreted on the basis of the domain wall motion equation. In this way the structural relaxation associated with domain dynamic is discussed and we can establish criteria for the design of certain filters at low frequencies (from 4 to 50 kHz).

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CHUVATIN, A. S., V. A. KOKSHENEV, L. E. ARANCHUK, D. HUET, N. E. KURMAEV, and F. I. FURSOV. "An inductive scheme of power conditioning at mega-Ampere currents." Laser and Particle Beams 24, no. 3 (September 2006): 395–401. http://dx.doi.org/10.1017/s0263034606060551.

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This work describes an inductive energy storage scheme intended for power multiplication at mega-Ampere currents. The key power multiplication element of the scheme is an opening switch generating the voltage of inductive origin. The switch represents an additional volume with magnetically accelerated solid-state or plasma conductor between the generator and the load. Motion of the conductor increases the inductance of the volume. A sufficiently fast increase of this inductance at the end of magnetic energy storage time ensures power multiplication. A critical requirement for the accelerated conductor is the possibility of temporal profiling of the inductance increase. A proof-of-principle experiment at GIT12 shows that such profiling is possible. We suggest a simple analysis of the scheme efficiency and illustrate this analysis for a multi-mega-Ampere class generator. The scheme is alternative to existing inductive energy storage technologies for pulsed-power conditioning at high currents.

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Більше джерел

Дисертації з теми "Motional Inductance"

MacFarlane, Jake Elias. "Understanding Marine Magnetotellurics." Thesis, 2022. https://hdl.handle.net/2440/135392.

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The theory of plate tectonics proposes that the Earth’s lithosphere is separated into rigid plates which are capable of motion through interactions with the underlying asthenosphere. Following its adoption in the 1960’s, it has become the prominent theory used to understand geodynamic processes within the Earth. The mechanisms of tectonism are of particular interest due to their implications regarding the formation of economic resources. Despite numerous studies attempting to characterise these mechanisms, the lithosphere-asthenosphere rheological contrast (LARC) remains an enigmatic component of plate tectonic theory. The magnetotelluric (MT) method is of particular interest when investigating the upper mantle as it is primarily sensitive to electrical conductivity. From electrical conductivity, conclusions regarding the temperature, pressure, physical and chemical state, porosity, and permeability of rocks can be inferred. This thesis examines laboratory conductivity measurements with ocean-bottom MT data collected from the Pacific Ocean. From these data, I create an upper mantle reference model for electrical conductivity and propose a hybrid MT impedance which improves the bandwidth and confidence intervals of ocean-bottom MT data. Between 50 km and 100 km depth, MT data predicts variable electrical conductivity structures. My reference model is able to encapsulate this variability with a function which varies according to hydration, partial melt, and the age of the overlying oceanic lithospheric. For 200 km to 400 km, the hydrated end-member of this reference model predicts the convergence of conductivity structures with increasing depth observable in published conductivity structures. As such, this reference model constrains the presence of hydration and partial melt within the LARC for a range of lithospheric ages and is a representative model of the Earth’s oceanic lithosphere and asthenosphere. Following an analysis of ocean-bottom EM field observations, I observe the attenuation of magnetic field variations by the conductive ocean water. This attenuation results in MT impedances which are difficult to interpret using available modelling algorithms. In contrast, the calculation of a hybrid MT impedance using ocean-bottom electric and continental magnetic fields is observed to improve the signal-to-noise ratio. This improved signal-to-noise ratio extends the usable bandwidth of ocean-bottom MT data from just over one decade to approximately four decades. It is important to note that this impedance represents the normalisation of ocean-bottom electric fields using continental magnetic fields. As a consequence, alterations must be made to modelling algorithms before attempting to reproduce hybrid impedances. Finally, a case study is conducted to assess the validity of my reference model and hybrid impedance. To do so, structurally simple forward models of both standard and hybrid impedances are calculated. The conductivity structure of this model was constrained by a 3-Dimensional inversion of continental MT data, controlled source EM (CSEM) data, and my reference model. From this model, hybrid impedances are observed to reproduces four decades of data measured by numerous receivers. From this evidence, I conclude that my reference model constrains the LARC and that it realistically represents the upper mantle. Additionally, I conclude that my hybrid impedance is a useful alternative to traditional MT impedance when conducting oceanbottom MT studies.
Thesis (Ph.D.) -- University of Adelaide, School of Physical Sciences, 2022

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Тези доповідей конференцій з теми "Motional Inductance"

Kogler, Helmut, Rudolf Scheidl, and Michael Ehrentraut. "A Simulation Model of a Hydraulic Buck Converter Based on a Mixed Time Frequency Domain Iteration." In ASME/BATH 2013 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fpmc2013-4409.

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Digital hydraulics is an opportunity to realize simple, robust, cheap and energy efficient hydraulic drives. In such systems digital on/off valves are used instead of proportional valves. Moreover, in hydraulic switching converters the valves are actuated within a few milliseconds, which create sharp pressure changes and, in turn, significant wave propagation effects in the pipe system. For a proper design of digital hydraulic systems a sound understanding of these effects is required to achieve the desired behavior of the switching drive system. In such converters, like the buck-, boost or boost-buck-converter, the inductance is one crucial component. It is realized by a simple pipe mainly for cost reasons. Furthermore, switching converters contain some components with nonlinear characteristics, like valves or accumulators, which prevent a comprehensive analysis in frequency domain. For a convenient analysis a qualified model of a hydraulic buck converter based on a mixed time frequency domain iteration is presented. Main parameters of this model are identified and wave propagation effects in the inductance pipe of the converter are investigated by simulation.

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Yang Yugang, F. C. Lee, Li Hongzhu, and Wu Jiaju. "A kind of low leakage inductance planar transformer." In 2009 IEEE 6th International Power Electronics and Motion Control Conference. IEEE, 2009. http://dx.doi.org/10.1109/ipemc.2009.5157483.

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Carmeli, Maria, Francesco Castelli-Dezza, Marco Mauri, and Gabrio Superti-Furga. "The Inductance Set Design in Wide Bandwidth Multiswitching Converters." In 2006 12th International Power Electronics and Motion Control Conference. IEEE, 2006. http://dx.doi.org/10.1109/epepemc.2006.283251.

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Carmeli, Maria Stefania, Francesco Castelli-Dezza, Marco Mauri, and Gabrio Superti-Furga. "The Inductance Set Design in Wide Bandwidth Multiswitching Converters." In 2006 12th International Power Electronics and Motion Control Conference. IEEE, 2006. http://dx.doi.org/10.1109/epepemc.2006.4778490.

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Ronczka, John. "Motion control in environmental biorheology using inductance signal processing." In 2016 IEEE 14th International Workshop on Advanced Motion Control (AMC). IEEE, 2016. http://dx.doi.org/10.1109/amc.2016.7496320.

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Wang, Xuanze, Ying Wu, Liangen Yang, and Lv Wei. "Motion error analysis of profilometer with grating-inductance combination." In Sixth International Symposium on Precision Engineering Measurements and Instrumentation. SPIE, 2010. http://dx.doi.org/10.1117/12.885400.

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Krall, Rudolf, Johann Krenn, and Andreas Schmid. "Comparison of leakage inductance between fractional slot winding and distributed winding." In 2014 16th International Power Electronics and Motion Control Conference (PEMC). IEEE, 2014. http://dx.doi.org/10.1109/epepemc.2014.6980505.

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Felt, Wyatt, Michelle Suen, and C. David Remy. "Sensing the motion of bellows through changes in mutual inductance." In 2016 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2016. http://dx.doi.org/10.1109/iros.2016.7759772.

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Ergene, L. T., and Y. Donmezer. "A study of end turn inductance calculation of BLDC motors." In 2010 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM 2010). IEEE, 2010. http://dx.doi.org/10.1109/speedam.2010.5545093.

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Formentini, A., G. Maragliano, M. Marchesoni, and L. Vaccaro. "A sensorless PMSM drive with inductance estimation based on FPGA." In 2012 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM 2012). IEEE, 2012. http://dx.doi.org/10.1109/speedam.2012.6264453.

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