Influence of Radial Force Harmonics With Low Mode Number on Electromagnetic Vibration of PMSM

Yang, Hui; Chen, Yangsheng

doi:10.1109/tec.2013.2290304

Cited by 179 publications

(58 citation statements)

References 18 publications

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“…With their widespread applications, the vibration and failure of motors has been an important issue, and the failures can be divided into mechanical failure and electrical failure [2,3]. In general terms, the electromagnetic forces on the rotor surface are balanced when the air-gap distribution between the rotor and the stator is uniform [4].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Nonlinear Vibration in Permanent Magnet Synchronous Motors under Unbalanced Magnetic Pull

et al. 2018

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Abstract:The vibration and noise of permanent magnet synchronous motors (PMSM) are mainly caused by unbalanced magnetic pull (UMP). This paper aims to investigate nonlinear vibration in PMSMs. Firstly, the analytical model of the air-gap magnetic field with an eccentric rotor in PMSM is studied, and the analytical model is verified by the finite element method. Then the dynamic model of an offset rotor-bearing system is established, and the gyroscopic effect, nonlinear bearing force and UMP are taken into consideration. Finally, the dynamic characteristics of different static displacement eccentricities, rotor offsets and radial clearances are investigated in both the time domain and the frequency domain. The results show that the amplitudes of dynamic responses increase with the static displacement eccentricity and rotor offset and high integer multiples of rotating frequency appear with the increase of displacement eccentricity. The coupling effects of bearing force, unbalanced mass force and UMP are observed in the frequency domain, and the frequency components in the dynamic responses indicate that the bearings have an effect on the system.

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Section: Introductionmentioning

confidence: 99%

Analysis of Nonlinear Vibration in Permanent Magnet Synchronous Motors under Unbalanced Magnetic Pull

et al. 2018

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“…Radial electromagnetic force is the main cause of electromagnetic oscillation in PM synchronous motor [8] . Therefore, the influence from radial electromagnetic force to PM synchronized motor is mainly analyzed in this paper.…”

Section: Electromagnetic Oscillation Analysis Of Pm Synchronous-motormentioning

confidence: 99%

“…Tangential component of electromagnetic force chiefly rotates the rotor, and radial component mainly makes stator deform and vibrate, and thus causes oscillation and noise. Generally speaking, electromagnetic vibration is the main source of motor's oscillation and noise [8] . Literature [8] studied 3-phase PM motors with 12 slots and 8 poles, 24 slots and 8 poles and 12 slots and 10 poles, and analyzed the influence from radial force harmonic to oscillation, coming to the conclusion that radial force with smaller order has bigger influence to oscillation.…”

Section: Introductionmentioning

confidence: 99%

“…Generally speaking, electromagnetic vibration is the main source of motor's oscillation and noise [8] . Literature [8] studied 3-phase PM motors with 12 slots and 8 poles, 24 slots and 8 poles and 12 slots and 10 poles, and analyzed the influence from radial force harmonic to oscillation, coming to the conclusion that radial force with smaller order has bigger influence to oscillation. Literature [9] studied 3-phase PM motors with slot -pole matches of 18/6, 9/6, 12/8, 15/10 and 12/10 under load and no-load condition, and analyzed radial and tangential moment on its stator-tooth, and calculated noise intensity under different slot-pole matches.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Research on Oscillation Character of Six-Phase Fractional-Slot Concentrated-Winding Permanent Motor with Different Slot-Pole Match

Qiao¹,

Zhu²,

Liang³

et al. 2016

Journal of Electrical Engineering and Technology

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-The oscillation character of permanent magnetic motor is highly related to its slot-pole match. By calculating air-gap magnet field and radial electromagnetic force of 6-phase fractional-slot concentrated-winding permanent magnetic motor with slot-pole match of 48/44，48/46，48/50 and 48/52 under no load and load status, oscillation character of permanent magnetic motor is analyzed. A 20kW prototype with 48 slots and 44 poles is designed. With many sensors attaching to the corresponding parts, oscillatory acceleration is measured, and spectrum of oscillation frequency is recorded as well. The experiment results give proof to the analysis method for permanent magnetic motor oscillation in this paper.

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“…The distribution characteristics of radial electromagnetic force were theoretically analyzed by FEM method [34]. The results in [36][37][38] show that the lowest mode number of radial force harmonics is the greatest common divisor of pole and slot combination. The effect of rotor step skewed on noise and vibration of the IPMSM were introduced in [39].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Electromagnetic, Thermal and Mechanical Characteristics of a Five-Phase Dual-Rotor Permanent-Magnet Synchronous Motor

Zhao

Liu

et al. 2015

Energies

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This paper investigates of a kind of five-phase dual-rotor permanent-magnet synchronous motor (DRPMSM), which contains dual rotors and a single stator. This kind of motor has the potential advantages of high power density, high reliability and high efficiency, which make it more appropriate for using in electric vehicles (EVs). In order to evaluate the most suitable power level for this kind of structure, the electromagnetic, the thermal and the mechanical characteristics are investigated in this paper. The length to diameter ratio of motors is researched to obtain the highest power density and then the optimum ratio is obtained. Based on the optimum ratio, the thermal characteristics are researched under natural condition and forced-air cooling condition with different wind speeds. In addition, the mechanical characteristics are analyzed under no-load and different loads conditions, respectively. All of the results are analyzed by two-dimension (2-D) and three-dimension (3-D) finite element method (FEM) simulation, which provide a good reference to select suitable power level for this kind of motor structure. Finally, a DRPMSM prototype is manufactured and tested. The experimental results effectively verify the FEM results.

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Influence of Radial Force Harmonics With Low Mode Number on Electromagnetic Vibration of PMSM

Cited by 179 publications

References 18 publications

Analysis of Nonlinear Vibration in Permanent Magnet Synchronous Motors under Unbalanced Magnetic Pull

Analysis of Nonlinear Vibration in Permanent Magnet Synchronous Motors under Unbalanced Magnetic Pull

Research on Oscillation Character of Six-Phase Fractional-Slot Concentrated-Winding Permanent Motor with Different Slot-Pole Match

Investigation of Electromagnetic, Thermal and Mechanical Characteristics of a Five-Phase Dual-Rotor Permanent-Magnet Synchronous Motor

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