Results 241 to 250 of about 15,894 (296)

Fields in permanent magnet linear synchronous machines

IEEE Transactions on Magnetics, 1986
The determination of electromagnetic fields in permanent magnet linear synchronous machines (PMLSM's) to form the basis for the evaluation of forces and parameters of PMLSM'S (to be presented in a subsequent paper) is discussed. Analytical techniques applied to permanent magnet rotary synchronous machines are modified and adapted to PMLSM's. Fields are
null Zesheng Deng, I. Boldea, S. Nasar
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Forces and parameters of permanent magnet linear synchronous machines

IEEE Transactions on Magnetics, 1987
The determination of electromagnetic forces and parameters of permanent magnetic linear synchronous machines (PMLSM's), based on an evaluation of electromagnetic fields, as reported earlier, is considered. Analytical techniques applied to permanent magnet rotary synchronous machines are modified and adapted to PMLSM's.
Z. Deng, I. Boldea, S. Nasar
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Permanent magnetic excitation of rotating and linear synchronous machines

Journal of Magnetism and Magnetic Materials, 1978
Abstract Selected controlled permanent magnet arrangements for active guideway linear synchronous propulsion with integrated magnetic levitation and guidance are presented. A comparison between permanent magnet and dc excited magnet control characteristics is given.
H. Weh, H. May
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Linear permanent magnet synchronous machine for high acceleration applications

2017 IEEE International Electric Machines and Drives Conference (IEMDC), 2017
In this work, a linear permanent magnet machine design is presented for applications that require high acceleration. This design uses aluminum as a supporting material for the moving secondary to reduce mass. Force production is maintained through the use of a quasi-Halbach array of permanent magnets. Aluminum, however, is conductive and the additional
William R. Jensen, Thang Q. Pham, Shanelle N. Foster   +2 more
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Investigation on an arc-linear axial flux permanent-magnet synchronous machine

2017 20th International Conference on Electrical Machines and Systems (ICEMS), 2017
A kind of arc-linear axial flux permanent-magnet synchronous machine (AL-AF-PMSM) used for scanning system is researched in this paper. Due to the characteristics of the three-dimensional (3-D) magnetic field, 3-D finite element method (FEM) is usually required to analyze the AF-PMSM. However, 3-D FEM is generally too time consuming.
Jing Zhao, Congcong Zhu, Bin Li, Xiangdong Liu, Zhen Chen, Xuefei Mao   +5 more
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Fault-Tolerance Performance Analysis of a Five-Phase Permanent-Magnet Linear Synchronous Machine

IEEE Transactions on Magnetics, 2021
A fault-tolerance control strategy based on the constant magnetomotive force (MMF) is proposed for a five-phase permanent-magnet linear synchronous machine (FP-PMLSM) under one-phase fault condition in this article, which aims to keep steady operation during a short time.
Qian Jiang, Qinfen Lu, Yanxin Li, Yiming Shen   +3 more
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Tubular linear permanent magnet synchronous machine applied to semi-active suspension systems

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2018
Purpose Semi-active suspension systems with electromagnetic dampers allow energy regeneration and the required control strategies are easier to implement than the active suspensions are. This paper aims to address the application of a tubular linear permanent magnet synchronous machine for a semi-active suspension ...
Ana Paula Zanatta, Ben Hur Bandeira Boff, Paulo Roberto Eckert, Aly Ferreira Flores Filho, David George Dorrell   +4 more
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Direct and quadrature inductances measurement of the permanent magnetic linear synchronous machines

Energy Conversion and Management, 2011
Permanent magnetic linear synchronous machines (PMLSMs) are playing a more important role either in transportation systems or magnetic launch systems, for the excellent advantages. It is indispensable to high performance controllers that some machine parameters are known such as the direct axis (d-axis) and quadrature axis (q-axis) inductances. In this
Liyi Li, Junjie Hong, Hongxing Wu, Baoquan Kou, Rizhong Liu   +4 more
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Characteristics of a disc permanent magnet linear synchronous machine with back iron

IEEE Transactions on Magnetics, 2000
A disc permanent magnet linear synchronous machine (DPMLSM) with back iron is presented in this paper. The proposed machine is to fulfil the requirements of high efficiency and large torque for electric vehicle (EV) applications. The back iron plays an important role in enhancing flux linkage and reducing flux leakage so that the designed machine has ...
null Cheng-Tsung Liu, null Jyh-Wei Chen, null Kun-Shian Su   +2 more
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Design and dynamic analysis of permanent magnet linear synchronous machine for servoapplication

Journal of Applied Physics, 2006
In servosystem demanding precision dynamic characteristics, application of the permanent magnet linear synchronous machines (PMLSMs) has an advantage of analysis convenience by simple geometry and thrust ripple reduction from the sinusoidal back electromotive force and excited stator.
Seok-Myeong Jang, Dae-Joon You, Won-Bum Jang, Sang-Chul Han   +3 more
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