Analytical Prediction of Noise of Magnetic Origin Produced by Permanent Magnet Brushless Motors

Gieras, Jacek F.; Wang, Chong; Joseph, C.S.L.; Ertugrul, N.

doi:10.1109/iemdc.2007.383568

Cited by 39 publications

(6 citation statements)

References 6 publications

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“…The harmonic leakage inductance of outer rotor FSCW PMSMs is investigated by involving the winding factors [10], [11]. Such rich air-gap magnetic field components will induce electromagnetic radial force components with various spatial orders, which are prone to excite significant electromagnetic radial vibration and acoustic noise in the machine [12]- [15].…”

Section: Nomenclature α υmentioning

confidence: 99%

Investigation of Magnetic Field Interharmonics and Sideband Vibration in the FSCW IPMSM Drive With the SPWM Technique

Liang

Luk

Fei

2018

IEEE Trans. Power Electron.

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The high-frequency sideband current harmonics are the inherent concomitants of applying sinusoidal pulse width modulation (SPWM) in permanent-magnet synchronous machine drives. Abundant spatial interharmonic magnetic field components in fractional-slot concentrated-winding (FSCW) interior permanent-magnet synchronous machine (IPMSM) render it very susceptible to electromagnetic radial vibration. In this paper, a universal analytical interharmonic model of magnetic field in FSCW IPMSMs is proposed, and further, it is employed to develop the sideband radial force density model of SPWM. Both comprehensive finite-element analysis (FEA) simulations and experimental tests are carried out to underpin the validity of the analytical models. The close agreements between the analytical, FEA, and experimental results have revealed that the proposed analytical approaches can deliver accurate sideband current and vibration predictions with minimum computational efforts and suffice for fast preliminary assessments. In addition, the validated analytical models can offer detailed and insightful revelations of various factors that affect the corresponding sideband vibration components.

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Section: Nomenclature α υmentioning

confidence: 99%

Investigation of Magnetic Field Interharmonics and Sideband Vibration in the FSCW IPMSM Drive With the SPWM Technique

Liang

Luk

Fei

2018

IEEE Trans. Power Electron.

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“…Table II lists all c terms for the radial component with its space and frequency harmonic and their affectation to a B CM r (CM) or B Add r (Add). According to Seinsch (1992) or alternatively Gieras et al (2007), Moreira and Lipo (1992) and Ellison and Yang (1971), the modes of the winding field of the fundamental frequency f 1 are given in this example by:…”

Section: Compel 303mentioning

confidence: 99%

Accounting for saturation in conformal mapping modeling of a permanent magnet synchronous machine

Hafner

Franck

Hameyer

2011

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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Purpose -In the electromagnetic field simulation of modern servo drives, the computation of higher time and space harmonics is essential to consider appearing torque pulsations, radial forces and ripple torques. The purpose of this paper is to propose a method to cover the effect of saturation on the armature flux density within conformal mapping (CM) by an finite element (FE) re-parameterization. Design/methodology/approach -Field computation by CM techniques is a time-effective method to compute the radial and tangential field components, but it generally neglects the effect of saturation. Findings -This paper presents a method to re-parameterize the CM approach by single FE computations so as to consider saturation in the model over a wide operation range of the electrical drive. Practical implications -The proposed method is applied to a surface permanent magnet synchronous machine, and compared to numerical results obtained by finite element analysis (FEA). Originality/value -The paper shows that an accuracy similar to that of FE simulations can be obtained with still the low-computation time that is the characteristic of analytical models.

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“…However, rich spatial field harmonics, including sub-harmonics, exist in the magnetic field from the armature reaction in these machines. As one of the main demerits of PMSM with FSCW configuration, these undesirable harmonics would induce low radial electromagnetic force harmonic orders which are susceptible to high mechanical response and the corresponding vibration [5]. Compared with their surface-mounted counterparts, interior PMSMs (IPMSMs) utilize the rotor saliency to harness both the PM and reluctance torques so that the torque density and efficiency can be improved.…”

Section: Introductionmentioning

confidence: 99%

“…Alternatively, the resultant magnetic forces acted on stator teeth, instead of radial electromagnetic force density, are employed to predict the electromagnetic vibration characteristics of both SPMSMs [27], [28] and IPMSMs [29], [30]. Similarly, various analytical [5], [7], [14], [20] and FEA [16]- [18], [28], [30]- [32] methods are widely adopted to calculate the radial electromagnetic force associated vibration in PMSMs. Recently, a comprehensive review is undertaken on research work in electromagnetic forces and resultant vibration in PMSMs with FSCW configuration [33].…”

Section: Introductionmentioning

confidence: 99%

Investigation of radial electromagnetic force density and vibration in a fractional-slot interior permanent magnet synchronous machine

Fei

Luk

2013

2013 IEEE Energy Conversion Congress and Exposition

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This paper investigates the radial electromagnetic force density and the associated vibration of an interior permanent magnet synchronous machine (IPMSM) with fractional-slot concentrated winding (FSCW) configuration. Interactions between magneto-motive force (MMF) harmonics, stator slotting effect, and rotor saliency effect will generate various air-gap magnetic field components, as well as radial electromagnetic force density harmonics. To develop an efficient yet realistic mechanism for the understanding of the force and vibration issues of the IPMSM under study, a combination of static two-dimensional (2-D) finite element analysis (FEA) and analytical methods is used to model the low order spatial harmonics of the machine's radial electromagnetic force density. The validity of the proposed approach is confirmed by the results from the high fidelity comprehensive transient 2-D FEA and 2-D fast Fourier transformation (FFT) methods. Moreover, comprehensive mechanical FEA are employed to carry out free and forced vibration investigations of the machine, which are verified by the experimental results.

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Analytical Prediction of Noise of Magnetic Origin Produced by Permanent Magnet Brushless Motors

Cited by 39 publications

References 6 publications

Investigation of Magnetic Field Interharmonics and Sideband Vibration in the FSCW IPMSM Drive With the SPWM Technique

Investigation of Magnetic Field Interharmonics and Sideband Vibration in the FSCW IPMSM Drive With the SPWM Technique

Accounting for saturation in conformal mapping modeling of a permanent magnet synchronous machine

Investigation of radial electromagnetic force density and vibration in a fractional-slot interior permanent magnet synchronous machine

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