Dynamic performance of a brushless DC tubular drive system

Akmese, R.; Eastham, J.F.

doi:10.1109/20.42274

Cited by 26 publications

(4 citation statements)

References 6 publications

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“…However, while this allows the relationship between critical design parameters and machine performance to be established analytically, it suffers from problems associated with model inaccuracy, particularly when flux leakage is significant and the flux paths are complex. Therefore, numerical analysis of the field distribution and evaluation of performance [7]- [9] are also employed. However, while techniques such as finite-element analysis provide an accurate means of determining the field distribution, with due account of saturation, etc., they remain time consuming and do not provide as much insight as analytical solutions into the influence of the design parameters on the machine behavior.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design Optimization of an Improved Axially Magnetized Tubular Permanent-Magnet Machine

Wang

Howe

Jewell

2004

IEEE Trans. On Energy Conversion

107

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Abstract-This paper describes the analysis and design optimization of an improved axially magnetized tubular permanentmagnet machine. Compared with a conventional axially magnetized tubular machine, it has a higher specific force capability and requires less permanent-magnet material. The magnetic field distribution is established analytically in the cylindrical coordinate system, and the results are validated by finite-element analyses. The analytical field solution allows the analytical prediction of the thrust force and back-electromotive force (emf) in closed forms, which, in turn, facilitates the characterization of a machine, and provides a basis for design optimization and system dynamic modeling.Index Terms-Linear motors, permanent-magnet motors, system analysis and design.

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Section: Introductionmentioning

confidence: 99%

Analysis and Design Optimization of an Improved Axially Magnetized Tubular Permanent-Magnet Machine

Wang

Howe

Jewell

2004

IEEE Trans. On Energy Conversion

107

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“…The boundary conditions to be satisfied by the solution to (6) are: (7) in the airspace/winding in the magnets.…”

Section: A Radial Magnetization Machine Topologiesmentioning

confidence: 99%

“…However, while this allows the relationship between critical design parameters and machine performance to be established analytically, it suffers from problems associated with model inaccuracy, particularly when flux leakage is significant and the flux paths are complex. With the availability of powerful software tools, numerical analysis of the field distribution and evaluation of performance [7]- [8] has also become common practice. However, while numerical techniques, such as finite element analysis, provide an accurate means of determining the field distribution, with due account of saturation etc., they remain time-consuming and do not provide as much insight as analytical solutions into the influence of the design parameters on the machine behavior.…”

mentioning

confidence: 99%

A general framework for the analysis and design of tubular linear permanent magnet machines

1999

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Abstract-A general framework for the analysis and design of a class of tubular linear permanent magnet machines is described. The open-circuit and armature reaction magnetic field distributions are established analytically in terms of a magnetic vector potential and cylindrical coordinate formulation, and the results are validated extensively by comparison with finite element analyses. The analytical field solutions allow the prediction of the thrust force, the winding emf, and the selfand mutual-winding inductances in closed forms. These facilitate the characterization of tubular machine topologies and provide a basis for comparative studies, design optimization, and machine dynamic modeling. Some practical issues, such as the effects of slotting and fringing, have also been accounted for and validated by measurements.

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“…However, while this allows the relationship between critical design parameters and machine performance to be established analytically, it suffers from problems associated with model inaccuracy, particularly when the leakage flux is sig- nificant and the flux paths are complex. Therefore, numerical analysis of the field distribution to facilitate evaluation of performance is also employed [11]- [13]. However, while numerical techniques, such as finite-element analysis, provide an accurate means of determining the field distribution, with due account of saturation, etc., they remain relatively time-consuming and do not provide as much insight as analytical solutions into the influence of the design parameters on the machine behavior.…”

mentioning

confidence: 99%

Design Optimization of Radially Magnetized, Iron-Cored, Tubular Permanent-Magnet Machines and Drive Systems

2004

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Abstract-In this paper we deduce, from analytical field solutions, the influence of leading design parameters on the performance of a radially magnetized, iron-cored, tubular permanent-magnet machine and its drive system. We derive analytical formulas for predicting the open-circuit electromotive force, the thrust force, the iron loss, and the winding resistance and inductances, as well as the converter losses. The force density, the machine and drive system efficiencies, and the power factor and converter volt-ampere (VA) rating are established as functions of a set of machine dimensional ratios, with due account of magnetic saturation and subject to a specified thermal constraint. We validate the utility and accuracy of the analytically derived formulas by finite-element calculations. Finally, we show that the design optimization of such a linear drive system must account for the losses and VA rating of the converter as well as the design parameters of the tubular machine.

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Dynamic performance of a brushless DC tubular drive system

Cited by 26 publications

References 6 publications

Analysis and Design Optimization of an Improved Axially Magnetized Tubular Permanent-Magnet Machine

Analysis and Design Optimization of an Improved Axially Magnetized Tubular Permanent-Magnet Machine

A general framework for the analysis and design of tubular linear permanent magnet machines

Design Optimization of Radially Magnetized, Iron-Cored, Tubular Permanent-Magnet Machines and Drive Systems

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