optimization magnetic lima
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- optimization magnetic lima
The use of a suitable modeling technique for the optimized design of a magnetic gear is essential to simulate its electromagnetic behavior and to predict its satisfactory performance. This paper presents the design optimization of an axial flux magnetic gear (AFMG) using a two-dimensional (2D) magnetic equivalent circuit model …
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Objective To compare intensity reduction plans for liver cancer with or without a magnetic field and optimize field and subfield numbers in the intensity-modulated radiotherapy (IMRT) plans designed for liver masses in different regions. Methods This retrospective study included 62 patients who received radiotherapy for liver cancer at …
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† The use of a user-defined permeability to apply a nonlinear iron magnetic material to a topology optimization Model Definition The magnetic circuit of a loudspeaker is used to concentrate the magnetic flux generated by a permanent magnet into an air gap in which a coil is placed, with the coil windings perpendicular to magnetic flux lines.
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Abstract. Since traction motors for electric vehicles require a variety of features to be used simultaneously, research on the design optimization of permanent …
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The consistency of magnetic flux density of damping gap (CMDG) represents the balancing magnetic flux density in each damping gap of magnetorheological (MR) dampers. It can make influences on the performances of MR dampers and the accuracy of relevant objective functions. In order to improve the mechanical performances of the MR damper with a two …
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This paper investigates the nonlinear dynamic behavior characteristics of PMSM and its application in the optimization of magnetic flux linkage. A new compact representation of the PMSM nonlinear dynamic differential equation is established to reduce the complexity of system parameters by using the affine transformation method. …
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Synchronous homopolar motors have no permanent magnets and their excitation winding is fixed at their stator. However, they can be a good alternative to induction and permanent magnet motors in traction applications requiring a wide constant power speed range. They provide an excitation flux control and a highly reliable …
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Reproducibility of Results. A review about the application of response surface methodology (RSM) in the optimization of analytical methods is presented. The theoretical principles of RSM and steps for its application are described to introduce readers to this multivariate statistical technique. Symmetrical experimental designs ….
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Modeling magnetic sensors as spatial filters is a powerful tool to analyze the effects of integration over a sensing region [Lima et al., 2002; Roth and Wikswo, 1990]. …
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We report a way of obtaining the magnetocaloric effect due to the crystal electrical-field quenching of the total angular momentum in a magnetic system where a strong spin reorientation is present. The theoretical model is applied to $mat{Dy}{mat{Al}}_{2}$ and the results predict a considerable magnetic …
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Here, we present a complete toolkit consisting of multiobjective topology optimization (for design synthesis) and multimaterial drop-on-demand three-dimensional for fabricating complex actuators (>10 6 design dimensions). The actuators consist of soft and rigid polymers and a magnetic nanoparticle/polymer composite that responds to a ...
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Example of magnetic-based topology optimization for the rotor core of an interior. permanent magnet synchronous machine, adapted from [77]. Iron regions adjacent to air pockets.
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Topology optimization of permanent magnet systems consisting of permanent magnets, high permeability iron and air is presented. An implementation of topology optimization for magnetostatics is discussed and three examples are considered. The Halbach cylinder is topology optimized with iron and an increase of 15% in magnetic …
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A single magnet was fixed at the bottom of the harvester to provide levitation force in this development in order to lower the resonant frequency. ... Liao, H., Ye, T., Pang, Y. et al. Modelling and Optimization of a Magnetic Spring Based Electromagnetic Vibration Energy Harvester. J. Electr. Eng. Technol. 17, 463–474 (2022). https://doi ...
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In order to better solve the problem of air leakage during compressor operation, based on the converging stepped magnetic fluid seal structure, the L16 (44) orthogonal test design and the ...
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Abstract. Additive manufacturing, no longer reserved exclusively for prototyping components, can create parts with complex geometries and locally tailored …
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The shaping of the magnetic structures for electrical machines can be generally categorized into two groups: (1) conventional shaping and optimization techniques, and (2) topology optimization. For the conventional shaping techniques, mathematical models and sensitivity analysis are typically used on a pre-selected …
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Magnetic coupler optimization uses distinct conductors to increase coil performance by lowering loss and modifying coil physical forms. Making coils with a superconductor (Sc) as the material is the most popular method. However, the practical feasibility is limited to superconductivity features of materials like Bi-2223, Bi-2212, …
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This paper presents a novel magnetic-geared permanent magnet (MGPM) machine with dual-layer PM excitations, referred as dual-layer MGPM (DL-MGPM) …
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The design of SMES magnet in search of minimum static and dynamic heat load of superconducting wire/cable is a multi-variable nonlinear constrained optimization problem. The charging and discharging rate of superconducting coil is determined by the duty cycle of DC–DC chopper. When duty cycle is 0.5, the coil is in free-wheeling or hold …
به خواندن ادامه دهیدSolving multi-objective optimization problems and obtaining a more satisfactory optimal solution are difficult. For the optimization problem of magnetically coupled transmission systems, many intelligent optimization algorithms have been used at home and abroad, among which the NSGA-II has been applied in many engineering fields.
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They provide an excitation flux control and a highly reliable brushless rotor design. This article presents the procedure and results of optimizing a 370 kW synchronous homopolar motor for driving ...
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Single magnet optimization demonstrates that there is an ideal size for permanent magnets (i.e., length-radius) and electromagnets (i.e. length-radius and coil-core). Three different sizes of ...
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Open Access. Estimating the Net Magnetic Moment of Geological Samples From Planar Field Maps Using Multipoles. Eduardo A. Lima, Benjamin P. Weiss, Caue …
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This work reports the study of tetracycline adsorption on magnetic graphene oxide (GO·Fe 3 O 4) from theoretical and experimental approaches.From the theoretical side, the combination of ab initio and Density Functional Theory (DFT) presents the structural and electronic properties of magnetic nanoadsorbent and tetracycline, …
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Note, that the topology obtained from the optimization using an ideal permanent magnetic material, for a realistic hard magnetic material with (chi = 0.2) produces a magnetic field that is only ...
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The most common plastic-to-fuels technology provides a good example in this field. •. The main goal of plastic pyrolysis technology has been shifted to produce paraffinic naphtha or plastic monomers. •. Plastic pyrolysis technology has the potential to create a plastics' circular economy in the coming years.
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In this paper, optimization design of a toroidal core for magnetic energy harvesting around power lines is proposed and presented. The main idea is to determine the inner radius of the toroidal core needed to generate maximum induced voltage by considering the saturation effect.
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1 Introduction Magnetic hyperthermia and related heat-assisted healing treatments are nowadays one of the most widely studied areas of application of magnetic nanoparticles (NPs). 1–7 Precision nanomedicine is a modern therapeutic practice, mainly developed for the treatment of cancer, and it exploits nanotechnology to support and favour treatments …
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To include both surface-based objectives and island widths in a single optimization, two fixed-boundary equilibrium calculations are run at each iteration of the optimization: one that enforces the existence of magnetic surfaces (the Variational Moments Equilibrium Code) [S. P. Hirshman and J. C. Whitson, Phys. Fluids 26, 3553 …
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Open access. Published: 21 January 2022. A topology optimization algorithm for magnetic structures based on a hybrid FEM–BEM method utilizing the …
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