Calculation of the Tangential Components of the Magnetic Field Strength From Vector Potentials for 3d

Demski, W.; Szymański, Grzegorz M.

doi:10.1108/eb051913

Cited by 4 publications

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“…From vector potential solution the normal component of flux density B is given directly, the tangential component of H can be obtained only approximately. On the other hand, the algorithm to compute the tangential component of magnetic field strength can be based on the fundamental physical equations [1] and that guarantees successful accuracy of the calculations. Comparison is made between the torque values obtained using the performed software and those obtained from experimental measurements.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic torque calculation in 3D systems with rotating field

Demski

Szymański

1998

COMPEL: The International Journal for Computation and Mathemati

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If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation.Abstract An algorithm to study a 3D system with rotating field using complex A, A-V formulation in finite difference solution is presented. Torque calculations are performed using volume Maxwell stress tensor. An eddy current tachometer is investigated. The numerical results are compared with those obtained by measurement. IntroductionIn order to verify software for force and torque calculation, the forces produced in the eddy current tachometer have been studied. The Maxwell stress method used for calculating the torque acting on the conducting ring in the research model of the machine depends strongly on the tangential component of magnetic field strength. From vector potential solution the normal component of flux density B is given directly, the tangential component of H can be obtained only approximately. On the other hand, the algorithm to compute the tangential component of magnetic field strength can be based on the fundamental physical equations[1] and that guarantees successful accuracy of the calculations. Comparison is made between the torque values obtained using the performed software and those obtained from experimental measurements.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic torque calculation in 3D systems with rotating field

Demski

Szymański

1998

COMPEL: The International Journal for Computation and Mathemati

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“…There are cases where knowledge of the normal components of B and the tangential components of H at the same time is necessary (for example, forces calculations). The ways of obtaining B N from H T for vector potential method and H T from B N for scalar potential approach are more complicated and are presented in Demski and Szyma nski (1994;.…”

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Field methods and computational techniques

Savini¹

2000

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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There is still a widespread and remarkable interest within the electromagnetic community for the refinement of methodologies for field analysis and their computational application. As many as 31 papers among those presented at the symposium can be grouped in this broad area.It is even possible to observe that the implementation of field theory in computer packages has contributed to the clarification of fundamental questions about the nature of field concepts. A few papers are concerned just with this kind of problem, e.g. boundary conditions, X points, field-circuit coupling, vector or scalar potential, field or potential.Artificial intelligence, e.g. fuzzy logic, is sometimes used within packages in order to improve their performance. The finite element method is currently the most popular method employed for field computation; other methods used are the method of moments, sometimes in connection with the former, and the finite difference method in the time domain. Three-dimensional eddy-current problems with moving conductors are among the most challenging problems.Applications cover a variety of topics ranging from electrostatic devices to permanent magnets, coaxial conductors and waveguides, including electromagnetic compatibility.

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Comparison of the force computation using the vector and scalar potential for 3D

Demski

Szymański²

1997

IEEE Trans. Magn.

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Ab#tract--Tao ways of secondary field quantities and force calculation are dimcussed and compared. For the magnetostatic case both approaches, scalar potentid and vector potential method can be applied. The malar potential formulations have proved to be very effective and finally the normal components of the magnetic flux density can be computed. If the vector potential method i s used, it i s necessary to determine the tangential components of the magnetic field strength as the secondary field value. The paper describes the method of the calculation of 3 D static fields using finite difference solutions. For calculation of forces the Maxwell stress is used.

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Calculation of the Tangential Components of the Magnetic Field Strength From Vector Potentials for 3d

Abstract: Normal components of B and the tangential components of H alike are needed for the force calculation. If the field is calculated numerically, only one of these components is known exactly (in numerical sense), the other one is known only approximately.

Cited by 4 publications

References 1 publication

Electromagnetic torque calculation in 3D systems with rotating field

Electromagnetic torque calculation in 3D systems with rotating field

Field methods and computational techniques

Comparison of the force computation using the vector and scalar potential for 3D

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