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The aim of the International Journal of Applied Electromagnetics and Mechanics is to contribute to intersciences coupling applied electromagnetics, mechanics and materials. The journal also intends to stimulate the further development of current technology in industry. The main subjects covered by the journal are:
- Physics and mechanics of electromagnetic materials and devices
- Computational electromagnetic in materials and devices
- Applications of electromagnetic fields and forces
The three interrelated key subjects - materials, electromagnetics and mechanics - include the following aspects: control, micromachines, intelligent structure, inverse problem, eddy current analysis, electromagnetic NDE, magnetic materials, magnetoelastic effects in materials, bioelectromagnetics, magnetosolid mechanics, magnetic levitations, applied physics of superconductors, superconducting magnet technology, superconducting propulsion system, nuclear fusion reactor components and wave propagation in electromagnetic fields.
Authors: Sun, Peng | Shao, Shuwen
Article Type: Research Article
Abstract: In this paper a novel coil axial magnetic contact for vacuum interrupters is designed and its magnetic field distribution has been analyzed. This asymmetric contacts structure have a static contact with two coils in series and a moving contact without any coil. The structure of the moving contact is simplified. Its strength will be enhanced, and its weight will be reduced, which is helpful to raise the breaking speed of the vacuum interrupter. Using finite method …the 3-D electrode model has been built and the simulation carried out. With the current value at maximal and zero, the axial magnetic field distribution at static contact surface, at moving surface, and at the middle surface between the static and moving contacts have been calculated. And the phase delay time of the axial magnetic field is considered as well. The simulation results provide that this asymmetric axial magnetic field structure can generate strong and uniform axial magnetic field. The residual magnetic field is small and its phase delay time after the current zero is short. Show more
Keywords: Vacuum interrupter, two segments coil, axial magnetic field contact, 3-D magnetic field, simulation
DOI: 10.3233/JAE-2010-1131
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 335-341, 2010
Authors: Kim, Ki-Chan
Article Type: Research Article
Abstract: In this paper, we propose a simulation algorithm for driving characteristics of interior permanent magnet synchronous motor (IPMSM) for electric vehicle considering nonlinear parameters like d-axis and q-axis inductances as well as core loss. D-axis and q-axis inductances as well as core loss parameter are changed according to both current magnitude and current angle between q-axis and current axis because of nonlinearity of magnetic flux density in stator and rotor core. Therefore, the calculation of d-axis …and q-axis inductances with nonlinearity of magnetic flux density and core loss is performed by using FEM. We can get precise driving performance of traction motor for electric vehicle adopting nonlinear d-axis and q-axis inductance table and core loss table. Show more
Keywords: Electric vehicle, IPMSM, driving characteristics, nonlinear inductance and core loss
DOI: 10.3233/JAE-2010-1132
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 343-350, 2010
Authors: Bai, Baodong | Yu, Qing
Article Type: Research Article
Abstract: The field circuit and movement coupled finite element method for the numerical analysis of 2D electromagnetic fields is proposed in the way of studying the electromagnetic fields of the three-phase flameproof induction motor. Numerical results obtained by means of the software of finite element analysis for a typical flameproof induction motor in different operation states such as no-load, static and transient states with load have confirmed positively the feasibility of the proposed method in solving the …electromagnetic problems. It is the foundation of the flameproof induction motor for optimal design. Show more
Keywords: Field circuit and movement coupled, electromagnetic field, three-phase flameproof induction motor, finite element method
DOI: 10.3233/JAE-2010-1133
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 351-359, 2010
Authors: Ishibashi, Kazuhisa | Andjelic, Zoran | Pusch, David
Article Type: Research Article
Abstract: Nonlinear eddy currents induced in steel plate are formulated by the boundary integral equations. The integral equations for the nonlinear analysis are derived by regarding nonlinear terms as fictitious sources. As the periodic electromagnetic quantities in the steel plate are distorted, these fields are expressed with the help of Fourier series, whose fundamental and harmonic fields are determined by solving the corresponding integral equations with the surface magnetic fields given as the boundary values. The internal …and surface electromagnetic fields are obtained numerically one after the other until convergence. In this iterative solution, Newton-Raphson method has been adopted but it is not applicable if the plate thickness approaches zero. So as to solve the difficulty, we adopt a simple iterative method and have confirmed that the method is effective. Show more
Keywords: Boundary element method, simple iterative solutions, nonlinear eddy current analysis, thin steel plate
DOI: 10.3233/JAE-2010-1134
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 361-367, 2010
Authors: Zou, Jianlong | Chen, Feng | Ma, Xikui
Article Type: Research Article
Abstract: The time-delayed Chua's circuit (TDCC) is an infinite-dimensional electromagnetic system with boundary nonlinearity. An analytic nonlinear model is established for the TDCC. Through simulation, it has been revealed that complex spatiotemporal behaviors characterized by irregular space-time patterns may happen in the TDCC. These complex spatiotemporal behaviors result from the boundary nonlinearity and the space-time coupling. Moreover, it has been found that the initial values during one round-trip delay play an important role in …the evolvements of spatiotemporal behaviors at the different locations of the transmission line. Show more
Keywords: Time-delayed Chua's circuit, spatiotemporal pattern, boundary nonlinearity
DOI: 10.3233/JAE-2010-1135
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 369-376, 2010
Authors: Cheng, Weiying | Komura, Ichiro
Article Type: Research Article
Abstract: A line-current model is proposed to calculate eddy current induced by rectangle coils. Eddy current induced by rectangle coils are analytically calculated using this model, and a coil configuration to induce eddy current deeper into a conductive material is proposed. Optimum excitation frequency is also calculated.
DOI: 10.3233/JAE-2010-1136
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 377-385, 2010
Authors: Ding, Keqin | Xin, Wei
Article Type: Research Article
Abstract: Pulsed eddy current (PEC) detection technology is a new non-destructive testing technology. It can be used to detect the inner corrosion of the low-carbon steel pipeline. The frequency is an important parameter affecting the detection results. In this paper, the influences of frequencies on the detection of inner corrosion are investigated by numerical simulated. By using the method of time-domain difference, the optimization of frequency for detecting the inner corrosion of pipeline is performed. The …research results can provide reference for frequency selection in the practical inspection. Show more
Keywords: PEC, pipeline, corrosion, frequency, simulation
DOI: 10.3233/JAE-2010-1137
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 387-394, 2010
Authors: Eguchi, Keisuke | Todaka, Takashi | Enokizono, Masato
Article Type: Research Article
Abstract: This paper presents results of magnetic characteristic analysis of a magnetic flux concentration type surface magnet motor. Firstly influence of number of the rotor poles on the torque characteristics was examined for fixed stator construction and then some constructions of the permanent magnet array were tested to reduce the cogging torque. Their magnetic flux distributions and torque characteristics were calculated by using the finite element method.
Keywords: CSPMSM, FEM (Finite Element Method), permanent magnet, magnetic arrangement
DOI: 10.3233/JAE-2010-1138
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 395-401, 2010
Authors: Ding, Wen | Liang, Deliang
Article Type: Research Article
Abstract: This paper presents the least square support vector machine (LS-SVM) network as a new tool to develop the model of the switched reluctance machine (SRM) and predict the dynamic performances of SRM system. The basic premise of LS-SVM regression is that it forms a very efficient mapping structure for the nonlinear SRM. By using the measured sample data of SRM, the LS-SVM is designed to learn the nonliear magnetization data with rotor position and phase current …as input, and the corresponding flux linkage and torque as output. It has a good capability of generalization and is computationally efficient. With the developed modeling method, a LS-SVM current-dependent inverse flux linkage model and a LS-SVM torque model are used to simulate the dynamic performances of a 6/4 SRM operating as a starter/generator, and the accuracy of the model is tested via comparison to the measurements of steady state phase current characteristics. Show more
Keywords: Flux linkage, least square support vector machine, modeling, switched reluctance machine, torque
DOI: 10.3233/JAE-2010-1139
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 403-413, 2010
Authors: Ishikawa, Seiji | Todaka, Takashi | Enokizono, Masato | Mauchi, Chikara
Article Type: Research Article
Abstract: This paper presents results of magnetic characteristic analysis of a three-phase generator utilizing grain-oriented silicon steel sheets. In the analysis, the finite element method taking account of the two-dimensional magnetic properties is used to make clear rotational iron loss distributions. In this paper, the knowledge obtained in the numerical simulations by means of the integration-type dynamic E&S modeling is reported. Also, the measurement results of a prototype generator designed with the magnetic …characteristic analysis are shown. Show more
Keywords: Three-phase permanent magnet generator, Grain-oriented silicon steel sheets, Iron loss, Integration-type dynamic E&S modeling, Dual-gap-type generator
DOI: 10.3233/JAE-2010-1140
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 415-422, 2010
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