Results 201 to 210 of about 836 (238)
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Optimization on thrust ripple of an axial-flux permanent-magnet linear synchronous machine
2011 International Conference on Electrical Machines and Systems, 2011This paper focuses on decreasing the thrust ripple of an axial-flux permanent-magnet linear synchronous machine (PMLSM) used for free-piston Stirling engines. A typical 1kW machine with 10 poles and 9 slots is investigated. By finite-element method (FEM), detent force and thrust ripple are analyzed for different axial and radial dimensions of the end ...
Wei Shi +5 more
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No-load magnetic field analysis of double-sided linear tubular permanent magnet synchronous machine
2016 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2016This paper presents no load magnetic field analysis of a double-sided linear tubular permanent magnet machine (DSLTPM) with a radially magnetized permanent magnet mover and iron-cored stator winding by using analytical method. Knowledge of magnetic field distribution inside the machine is essential for optimal design of machine.
M.M. Reza +3 more
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A methodology of iron loss calculation for permanent magnet linear synchronous machine
2015 IEEE Magnetics Conference (INTERMAG), 2015In power systems, electrical motors are essential elements which account for the majority of the electrical load. Although the basic design and control theory has been studied for multitudes of years, there are still some common problems which are necessary to further study.
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Analysis and Optimization of Detent Force of Linear Permanent Magnet Synchronous Machine
2022Detent force is a magnetic problem that occurs in linear permanent magnet synchronousmachines (LPMSM), causing problems such as noise torque fluctuation. The phenomenon that creates thisforce is the interaction of the magnetic core and permanent magnets with each other. Unlike radialpermanent magnet synchronous motors, LPMSM have two elements that have
Turun, Ferhat +2 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, 2018Purpose 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 +4 more
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2008 IEEE Power Electronics Specialists Conference, 2008
In this paper, the concept of efficiency evaluation of linear permanent magnet synchronous motors using the synthetic loading method is described and evaluated. Synthetic loading is a method of efficiency evaluation that eliminates the need for a mechanical load to absorb generated shaft power.
Abdelaziz Y. M. Abbas, John E. Fletcher
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In this paper, the concept of efficiency evaluation of linear permanent magnet synchronous motors using the synthetic loading method is described and evaluated. Synthetic loading is a method of efficiency evaluation that eliminates the need for a mechanical load to absorb generated shaft power.
Abdelaziz Y. M. Abbas, John E. Fletcher
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Flux Distribution in Linear Permanent-Magnet Synchronous Machines Including Longitudinal End Effects
IEEE Transactions on Magnetics, 2007We investigated the longitudinal ends' influence on the flux distribution in a permanent-magnet linear synchronous machine with an analytic model and with numeric finite-element methods. We derived a general analytic expression, on closed form, from a linear reluctance model.
O. Danielsson, M. Leijon
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2017 IEEE International Electric Machines and Drives Conference (IEMDC), 2017
Technology has advanced the reliability of electrical machines; however, machine failures still occur. Undetected stator inter-turn faults in permanent magnet synchronous machines can quickly propagate to catastrophic failure. In this work, unique signatures in the phase voltages of linear permanent magnet synchronous machines with a short secondary ...
Thang Q. Pham +2 more
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Technology has advanced the reliability of electrical machines; however, machine failures still occur. Undetected stator inter-turn faults in permanent magnet synchronous machines can quickly propagate to catastrophic failure. In this work, unique signatures in the phase voltages of linear permanent magnet synchronous machines with a short secondary ...
Thang Q. Pham +2 more
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Applied Mechanics and Materials, 2013
In order to solve the high-frequency chattering and low anti-disturbance in conventional variable structure control (VSC) method with sliding mode, a compensator scheme of introducing integral structure before control object is proposed. Firstly, the position loop VSC state equations and equivalent control model are established based on the analyses of
Ying Quan Liu, Dong Ru Sun, Yun Yue Ye
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In order to solve the high-frequency chattering and low anti-disturbance in conventional variable structure control (VSC) method with sliding mode, a compensator scheme of introducing integral structure before control object is proposed. Firstly, the position loop VSC state equations and equivalent control model are established based on the analyses of
Ying Quan Liu, Dong Ru Sun, Yun Yue Ye
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Polar Transformed Subdomain Modeling for Double-Stator Permanent Magnet Linear Synchronous Machine
IEEE Transactions on Magnetics, 2018This paper presents a developed 2-D analytical subdomain model for design and analysis of the double-stator permanent magnet linear synchronous machine (DS-PMLSM) to account for both the primary and secondary end effects. First, considering the time constraint, polar transformed method is adopted to establish the 2-D subdomain analytical model, the DS ...
Rong Guo +5 more
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