Influence of Slots and Rotor Poles Combinations on Noise and Vibrations of Magnetic Origins in `U'-Core Flux-Switching Permanent Magnet Machines

Verez, Guillaume; Barakat, Georges; Amara, and Yacine

doi:10.2528/pierb14100902

Cited by 20 publications

(9 citation statements)

References 33 publications

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“…In order to simplify the simulation and increase the calculation efficiency, the permeability between the stator and the rotor back iron is assumed to be infinite, and the motor model is applied in the simulation using Ansoft Maxwell. 18,19 The motor model of Maxwell 2D is built. According to the windings arrangement in the motor model, the windings in the stator slots of the three-phase PM motor are separated, and then the three-phase windings are loaded.…”

Section: Mre Of the Spindle In The Ultra-precision Machine Toolmentioning

confidence: 99%

Effect of motor rotor eccentricity on aerostatic spindle vibration in machining processes

Sun

Chen

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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In ultra-precision machining field, the air motorized spindle which is composed of a motor and an air bearing, plays a major role. In air motorized spindle, the motor eccentricity between the stator and the rotor is inevitably introduced during the manufacturing process, which directly affects the machining results of workpiece surface, and this phenomenon is particularly unwanted in machining. However, little attention has been paid to the motor eccentricity of air motorized spindle. In this paper, a new integrated electromechanical coupling method for estimating unbalanced force in air motorized spindle is presented, and the effects of motor rotor eccentricity on surface topography in ultra-precision processes are analyzed. An electromagnetic-mechanical method is used to study the coupling effects between the motor rotor and the aerostatic spindle. Meanwhile, the motor rotor and the aerostatic spindle are analyzed as a whole. In order to clearly describe the electromagnetic–mechanical method, the ultra-precision spindle for potassium dihydrogen phosphate crystal machining tool is selected as the research object, and the model of air motorized spindle and motor rotor eccentricity are presented. Besides, in order to assess the impact of the radial magnetic force caused by motor rotor eccentricity on the spindle performance, a range of rotor eccentricities is calculated. Additionally, the influence of the motor rotor eccentricity on the dynamic response of spindle is further analyzed. It is found that motor rotor eccentricity has a significant influence on the spindle vibration, which dramatically reduces the processing quality. Finally, the machining experiments are carried out, and the flatness errors of the workpiece caused by the motor rotor eccentricity are obtained by the wavelet method. The experimental results are consistent with the analysis results, which verifies the reliability of this method. This study is quite meaningful for deeply understanding the influence of motor rotor eccentricity on the machined surface.

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Section: Mre Of the Spindle In The Ultra-precision Machine Toolmentioning

confidence: 99%

Effect of motor rotor eccentricity on aerostatic spindle vibration in machining processes

Sun

Chen

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…If the number of stator poles is 12, then 12/11 and 12/13 machines exhibit potential unbalanced magnetic force. Also, the 12/10 FSPM exhibits the minimum torque ripple [6] and radiates less noise than the others [8]. Fig.…”

mentioning

confidence: 94%

Impact of the airgap magnetic field harmonics on the performances of a disc type flux switching machine for wind application

Dhifli

Ennassiri

Amara

et al. 2016

2016 XXII International Conference on Electrical Machines (ICEM)

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Φ Abstract --This paper presents a detailed study of the impact of the airgap magnetic field harmonics on some performances of a disc-type switching flux permanent magnet generator. More precisely, the presented study concerns the cogging torque, the total torque as well as the torque ripple, the eddy currents in the permanent magnets and finally the vibroacoustic emissions due to electromagnetic origins. First, maximizing average output electromagnetic torque and minimizing cogging torque are done varying the rotor tooth dimensions. This study is achieved using a multislice 2D finite element (FE) magnetic model in order to reduce computation time. Then, eddy current loss in permanent magnet is estimated using 3D FE method for the machine having optimal dimensions. Finally, the previously computed airgap flux density is used to evaluate the local magnetic forces acting on the airgap side stator faces. Estimated local forces serve as an input for a 3D mechanical structural FE model quantifying the vibro-acoustic performances of the studied machine. The various results are presented and discussed in each section of this paper.

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“…Alternative 3-phase PMFSM topologies with potentially reduced stator pole number without introducing the unbalanced magnetic force were presented [4]. In [5], the influence of slots and rotor poles combinations on noise and vibrations in PMFSM was studied. The design, optimization and performances of outer-rotor PMFSM were studied in [6,7,8,9].…”

Section: Introductionmentioning

confidence: 99%

Design and performance analysis of permanent magnet flux-switching motors using segmental permanent magnets

Zhou

et al. 2019

IEICE Electron. Express

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This paper proposes a structure of permanent magnet fluxswitching motors (PMFSM) using "mixed" segmental permanent magnets, which is based on analysis of the structure and the operational principle of PMFSM. The paper researches the influence of tangential and radial segmental permanent magnets on motor's electromagnetic torque, torque ripple and cogging torque respectively, which is based on the finite element analysis of a 12/10 three phase permanent magnet flux-switching motor. The research shows that the motors using this new structure can reduce torque ripple and cogging torque by comparing with the conventional permanent magnet flux-switching motor, and the motors have negligible influence on the other performances, such as the flux linkage and the induced voltage.

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Influence of Slots and Rotor Poles Combinations on Noise and Vibrations of Magnetic Origins in `U'-Core Flux-Switching Permanent Magnet Machines

Cited by 20 publications

References 33 publications

Effect of motor rotor eccentricity on aerostatic spindle vibration in machining processes

Effect of motor rotor eccentricity on aerostatic spindle vibration in machining processes

Impact of the airgap magnetic field harmonics on the performances of a disc type flux switching machine for wind application

Design and performance analysis of permanent magnet flux-switching motors using segmental permanent magnets

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