Optimization and dynamic characteristics of a new type of permanent magnet bias bearing

Xiao, Longfei; Xiwu, He; Cheng, Wenjie; Fan, Hongwei; Li, Ming

doi:10.1177/0954406220922277

Cited by 6 publications

(5 citation statements)

References 15 publications

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“…The working principle of magnetic bearings with permanent magnets is very similar to that of active magnetic bearings with one distinction: permanent magnets are used to produce the bias flux while the control current produces the control flux only. The usage of permanent magnets increases the efficiency of magnetic bearings; therefore, in recent years, an increase in research activity concerning magnetic bearings with permanent magnets can be seen [ 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Simulations of Transients in a Four-Pole Magnetic Bearing with Permanent Magnets

Wajnert,

Tomczuk

2024

Sensors

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This paper presents the design of and transient time simulations for a four-pole magnetic bearing with permanent magnets. The usage of permanent magnets reduces the consumption of electric energy in comparison to a traditional active magnetic bearing. Permanent magnets are installed in the yoke of the stator core to limit the cross-coupling of the magnetic flux generated by the windings. The first part of this paper presents the design of the magnetic bearing and its finite-element model, while the second part describes the field-circuit indirectly coupled finite-element model for the transient time simulation. The presented simulation model was used to calculate the transient response for the rotor lifting from the starting position, the step change in the rotor position and the change in the rotor position under an external impact force applied along the y-axis.

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Section: Introductionmentioning

confidence: 99%

Simulations of Transients in a Four-Pole Magnetic Bearing with Permanent Magnets

Wajnert,

Tomczuk

2024

Sensors

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“…With the development of permanent magnet (PM) materials and power electronic technologies [1][2][3] , interior permanent magnet synchronous motors (IPMSMs) have been widely used as driving machines for electric vehicles due to their compact structures and excellent electromagnetic performances. [4][5][6] As a significant evaluation index, the vibration and noise characteristics of IPMSMs caused by variable electromagnetic (EM) excitation sources are completely different from those of internal combustion engines.…”

Section: Introductionmentioning

confidence: 99%

Modeling and analysis of electromagnetic force in interior permanent magnet synchronous motor used for electric vehicles

Zuo

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The accurate prediction and analysis of electromagnetic excitation source is the pre-condition for the investigation of electromagnetic vibration and noise. In this work, an analytical model for electromagnetic (EM) force calculation of interior permanent magnet synchronous motors (IPMSMs) is proposed by coupling the 2-D model in polar coordinates and the Maxwell stress tensor method (MSTM). In the modeling, the boundary conditions for solving the air-gap magnetic field are firstly simplified based on the equivalent conversion of permanent magnets (PMs). Then, the magnetic field is acquired by solving the governing equation based on the simplified boundary conditions. Finally, the EM force is obtained according to the MSTM. The effectiveness is fully verified by finite element (FE) analysis that the analytical model can be applied not only for the calculation of radial EM force of IPMSMs with/without load but also for the calculation of tangential EM force. Besides, the tangential EM force is further analyzed by 2-D Fourier decomposition, and the relationship between tangential EM force and torque fluctuation is also clarified. The results show that the radial EM force harmonics and the tangential EM force harmonics have the same spatiotemporal characteristics no matter under no-load or load. Moreover, the high-frequency components of tangential EM force harmonics with low spatial orders, which have the highest contribution to vibration and noise, are comparable to those of radial EM force harmonics. Meanwhile, the torque fluctuation of IPMSMs with/without load only comes from the zero-order tangential EM force harmonics in space.

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“…Yilmaz et al 35 describes the adoption of multi-objective hybrid particle swarm optimization (MOHPSO) and multi-objective real-numbered particle swarm optimization (MORPSO) algorithms for a circular magnetic coupler design to increase performances and automate the design process. Xiao et al 36 presented an adaptive particle swarm optimization (APSO) algorithm to optimize the structural parameters of a novel permanent magnet bias bearing. In this paper, the multi-objective particle swarm optimization algorithm (MOPSO) with the good global search ability and fast convergence speed is used to simplify the design process and improve the performance of novel differential PMS.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization design of novel differential permanent magnet spring based on analytical modeling

Zhu

Zhang

Meng

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper proposes a novel structure of annular differential permanent magnet spring with an octagonal moving ring and its multi-objective optimization design procedure based on analytical modeling. Compared with the typical annular differential permanent magnet spring with rectangular cross-section, this novel configuration has larger stiffness, smaller volume, and can effectively save permanent magnet materials. Based on the analytical modeling of the rectangular cross-section magnetic ring, the theory of attraction-repulsion boundary line is proposed, which is used to determine the key dimensions and optimal cross-section shape of the octagonal moving ring and is verified by the FEM simulation afterward. The octagonal moving ring is further decomposed into several types of basic permanent magnet elements to obtain their respective analytical expressions, which are then re-superimposed into the whole octagon to obtain the analytical force-displacement equation of the whole spring. Based on the analytical modeling, a multi-objective optimization procedure is performed to optimize the design parameters in order to balance the different performance requirements. The Pareto front of the desired objectives are obtained and three weighed solutions in Pareto front are selected by analytic hierarchy process. Finally, three prototypes based on the final optimization results are manufactured and tested. The experimental results verify the correctness of the design theory and optimization process.

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Optimization and dynamic characteristics of a new type of permanent magnet bias bearing

Cited by 6 publications

References 15 publications

Simulations of Transients in a Four-Pole Magnetic Bearing with Permanent Magnets

Simulations of Transients in a Four-Pole Magnetic Bearing with Permanent Magnets

Modeling and analysis of electromagnetic force in interior permanent magnet synchronous motor used for electric vehicles

Multi-objective optimization design of novel differential permanent magnet spring based on analytical modeling

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