Study on the effects of rotor‐step skewing on the vibration and noise of a PMSM for electric vehicles

Wang, Xiaoyuan; Sun, Xibin; Gao, Peng

doi:10.1049/iet-epa.2019.0238

Cited by 36 publications

(25 citation statements)

References 28 publications

(34 reference statements)

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“…According to [25], when neglecting the harmonics current of PWM inverter, the electromagnetic force wave, which is along the circumference of the stator inner surface, is represented as…”

Section: The Effect Of Rotor Eccentricity On Electromagnetic Noisementioning

confidence: 99%

Analytical modeling and study on noise characteristics of rotor eccentric SPMSM with unequal magnetic poles structure

Xia¹,

Yu²,

Dou³

et al. 2021

Turk J Elec Eng & Comp Sci

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The establishment of the analytical model of the rotor eccentric surface-mounted permanent magnet synchronous motor (SPMSM) with unequal magnetic poles structure will be beneficial to calculating the magnetic field and studying noise characteristics quickly. Based on the equivalent surface current (ESC) method and equivalent boundary method, the analytical model of the rotor eccentric SPMSM with unequal magnetic poles structure is proposed. During the modeling process, the magnetic field produced by a permanent magnet (PM) is obtained using the ESC method, and the effect on the air gap magnetic field, which arised from stator, is replaced with the concentric current sheet (CCS) magnetic field. And, the analytical results of the magnetic field are confirmed by FEM. According to the analytical model of the SPMSM, the effect on the noise characteristics, which resulted from rotor eccentricity, is researched. Moreover, the experiments of noise comparison are done. The results validate the validity of noise characteristic research. Then, the analytical model of the SPMSM is further verified.

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“…According to [25], when neglecting the harmonics current of PWM inverter, the electromagnetic force wave, which is along the circumference of the stator inner surface, is represented as…”

Section: The Effect Of Rotor Eccentricity On Electromagnetic Noisementioning

confidence: 99%

Analytical modeling and study on noise characteristics of rotor eccentric SPMSM with unequal magnetic poles structure

Xia¹,

Yu²,

Dou³

et al. 2021

Turk J Elec Eng & Comp Sci

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“…The MMF excited by the three-phase symmetrical current in the stator windings is expressed as [29] ,, 8) and ( 5), the air-gap flux density generated by direct-axis armature reaction can be written as , ,…”

Section: Analytical Model Of Armfmentioning

confidence: 99%

Influence of Salient Effect on Air-Gap Flux Density Distribution of Interior Permanent-Magnet Synchronous Machines

Xia

Zhang

et al. 2021

IEEE Access

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Interior permanent magnet synchronous machines (IPMSMs) are widely used in electric vehicles due to their high power density, high efficiency, and wide speed range. Compared with surfacemounted PMSMs, the salient effect of IPMSMs causes a significant difference between quadrature-axis and direct-axis flux paths, which can increase the harmonic components of the air-gap field and affect the operation of the machine. Herein, taking a 6-poles 36-slots PMSM as an example, this paper analyzes the influence of salient effect on the air-gap flux density. Based on salient effect function, the analytical model of air-gap flux density considering the salient effect is established, and the influence of the salient effect on the spatial-temporal distribution characteristics of air-gap flux density excited by permanent magnets and armature reaction are derived, which are verified by the finite element method (FEM). Both simulation and experiment results of the prototype show good agreement, and the sources of salient effect are found with finite element model and equivalent magnetic circuit. Further, different current excitations are applied to analyze the influence of the salient effect on different magnetic fields. The results show that the salient effect has a more significant influence on the direct-axis armature reaction magnetic field, which increases the harmonics components with the temporal orders of 3ka (ka=1,2,3…).INDEX TERMS IPMSMs, salient effect, quadrature-axis and direct-axis flux paths, spatial-temporal distribution, equivalent magnetic circuit, FEM.

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“…[8] examines the impact of slot harmonics on machine noise and vibration, whereas Ref. [4] gives a detailed talk about skewing and its implications on machine noise and vibration. Some other researchers recently have focussed on machine vibration and noise characteristics, considering the effect of magnetostriction and stress analysis on the overall machine vibration and noise.…”

Section: Introductionmentioning

confidence: 99%

Investigation of noise and vibration characteristics of an IPMSM with modular‐type winding arrangements having three‐phase sub‐modules for fault‐tolerant applications

Shah

Wang

Abubakar

et al. 2021

IET Electric Power Appl

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The noise and vibration level in modular‐type permanent magnet synchronous machines with fractional slot concentrated windings (FSCW) is considered to be an important design consideration, particularly for applications requiring fault tolerance. In this work, an interior permanent magnet synchronous machine (IPMSM) with FSCW is designed in a modular manner by dividing its stator windings into different arrangements having independent three‐phase sub‐modules with separate neutral points. First, the modular concentrated winding arrangement is studied to investigate the radial forces, vibration, and the associated noise level in the prototype machine having three‐phase sub‐modules under open‐circuit fault conditions. Then, another type of distributed three‐phase sub‐module winding arrangement is analysed to further investigate the vibration and noise level in the same prototype machine under the same operating conditions. A detailed two‐dimensional (2D) fast Fourier transform analysis is performed to investigate and compare the machine radial forces, induced harmonics, and sub‐harmonics for the two analysed winding arrangements. Considering the advantages and disadvantages of both the winding arrangements, the third type of mixed concentrated and distributed three‐phase sub‐modules winding arrangement is introduced in this work, combining the first two winding design approaches. A comprehensive harmonic (3D) structure, along with the vibration and noise analysis, is performed using a multi‐physics model analysis for all the winding arrangements under different three‐phase sub‐modules open‐circuit fault conditions. Lastly, the vibration levels of all the machine prototype models under different winding arrangements are experimentally validated. Moreover, the different modular types of winding arrangements are deeply investigated in this work to suggest the best winding arrangement approach that enables the machine to work in a wide range of applications requiring lower power levels or under critical, faulty, and hostile conditions. The proposed winding arrangement has reduced stator deformation with a reduced vibration and noise level under three‐phase sub‐modules open‐circuit fault‐tolerant conditions that can be used according to process requirements.

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Study on the effects of rotor‐step skewing on the vibration and noise of a PMSM for electric vehicles

Cited by 36 publications

References 28 publications

Analytical modeling and study on noise characteristics of rotor eccentric SPMSM with unequal magnetic poles structure

Analytical modeling and study on noise characteristics of rotor eccentric SPMSM with unequal magnetic poles structure

Influence of Salient Effect on Air-Gap Flux Density Distribution of Interior Permanent-Magnet Synchronous Machines

Investigation of noise and vibration characteristics of an IPMSM with modular‐type winding arrangements having three‐phase sub‐modules for fault‐tolerant applications

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