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ISA Transactions, 2023
Generally there are two methods for the thrust ripple modeling: one is to identify the eigenvalues and the model parameters of thrust ripple sequentially under rigorous operating conditions; another is to treat thrust ripple as a general and inaccurate disturbance.
He Chang +5 more
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Generally there are two methods for the thrust ripple modeling: one is to identify the eigenvalues and the model parameters of thrust ripple sequentially under rigorous operating conditions; another is to treat thrust ripple as a general and inaccurate disturbance.
He Chang +5 more
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2017 IEEE International Electric Machines and Drives Conference (IEMDC), 2017
This paper introduces a novel linear vernier permanent magnet machine (H-LVPMM) with high force density and low force ripple. The permanent magnets (PMs) on secondary uses Halbach array, which can provide a larger flux density in the air gap than that of the conventional surface-mounted PMs configurations, and the primary is composed of three modules ...
Yongsheng Huo +4 more
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This paper introduces a novel linear vernier permanent magnet machine (H-LVPMM) with high force density and low force ripple. The permanent magnets (PMs) on secondary uses Halbach array, which can provide a larger flux density in the air gap than that of the conventional surface-mounted PMs configurations, and the primary is composed of three modules ...
Yongsheng Huo +4 more
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Effects of different chopping modes on the thrust ripple of electromagnetic launchers
2012 16th International Symposium on Electromagnetic Launch Technology, 2012Brushless DC linear motors have considerable advantages of simpler structure, higher efficiency, higher thrust density and so on. They are well suited for many domains such as electromagnetic launch and launch-assist, and their winding currents usually are square-wave.
Xiaopeng Li, Ku Tian, Yi Fang
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Thrust ripple optimization and experiment for a permanent magnet linear synchronous motor
Frontiers of Electrical and Electronic Engineering in China, 2006Thrust ripple such as end force, slot force and normal force are key factors that affect the properties of permanent magnet linear synchronous motors (PMLSM). According to different mechanics and analytical models, end force resulting from open magnetic circuit of PMLSM was greatly decreased by optimizing the length of the PMLSM mover.
Yue-tong Xu, Jian-zhong Fu, Zi-chen Chen
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Research on Restraining Thrust Force Ripple for Permanent Magnet Linear Synchronous Motor
2006 CES/IEEE 5th International Power Electronics and Motion Control Conference, 2006Direct thrust force control will be applied to control permanent magnet linear synchronous motor. Thrust force ripple because of special end-effect of linear motor is bigger problem in the linear motor direct driving system without any conversion block.
Cui Jiefan +4 more
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Design of thrust ripple minimization by equivalent magnetizing current considering slot effect
IEEE Transactions on Magnetics, 2006This paper proposes the maximum thrust design of slotted permanent magnet linear synchronous motor (PMLSM) using equivalent magnetizing current method (EMCM) considering slot effect. The genetic algorithm is used for optimization. The objective functions are selected for the maximum thrust and the minimum detent force.
null Dong-Yeup Lee, null Gyu-Tak Kim
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Analysis of thrust ripple of permanent magnet linear synchronous motor with skewed PMs
2015 18th International Conference on Electrical Machines and Systems (ICEMS), 2015The thrust ripple of Permanent Magnet Linear Synchronous Motor (PMLSM) at load can reach 10% average thrust, which deteriorates thrust performance. To reduce the thrust ripple, two methods of optimizing the primary length and skewing are widely adopted during PMLSM design. In this paper, the effect of skewing technology is investigated.
Yihua Yao +4 more
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Thrust ripple and inductances characteristics of a hybrid-excited flux-switching linear machine
2017 Twelfth International Conference on Ecological Vehicles and Renewable Energies (EVER), 2017Hybrid-excited flux-switching linear machine (HEFSLM) adjusts the air gap flux density by DC excitation current, which may have great influence on its performances and parameters, such as thrust force, thrust ripple, inductances and etc. This paper mainly investigates its thrust ripple and inductances characteristics under different DC excitation ...
null Zhiqiang Zeng +3 more
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Design and Reduction of Thrust Ripple in Transverse Flux Permanent Magnet Linear Machine
2018 IEEE International Magnetics Conference (INTERMAG), 2018This paper proposed a tubular transverse flux permanent magnet linear machine with the quasi-distributed stator segments, due to the problem of larger thrust force ripple in the machine, which has some merits higher force density and better controllable characteristic etc.
Yu Shuail +5 more
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THRUST RIPPLE OPTIMISATION METHOD FOR LINEAR SWITCHED-FLUX MACHINES
IET Conference Proceedings, 2021I. Eguren +4 more
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