Active reduction of audible noise exciting radial force-density waves in induction motors

Franck, David; Giet, M. van der; Hameyer, Kay

doi:10.1109/iemdc.2011.5994776

Cited by 24 publications

(12 citation statements)

References 14 publications

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“…Davydov, N.A. Dobroskok and other scientists [3,10,11]. This methods are based on the change of angles and amplitudes of voltages in the vector control system of an SCIM-based electric drive.…”

Section: Introductionmentioning

confidence: 99%

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Active reduction of magnetic noise occurring in the stators of an induction motors

Ermolaev¹,

Erofeev²,

Plekhov³

et al. 2021

Vib. proced.

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The article describes a method for active reduction of magnetic noise generated by a magnetic field that exists in the airgap of an induction motor. In this article a mathematical model of the process of magnetic noise excitation in a stators is presented. The model take into account that magnetic field waves, radial magnetic force waves (so-called Maxwell forces) and stator deformation waves (magnetic noise) are characterized by their own values of amplitude, mode number, frequency and phase shift. By comparing the equations for calculating the stator mechanical impedance, the amplitude of the radial magnetic force and the simplified magnetic noise equation, the relationships between these variables were established. The method of active reduction of magnetic noise proposed in the article is based on the use of these relationships. The novelty of the proposed method lies in the use of the filtered spectrum of output signal of the accelerometer installed on the stator to determine the most intense harmonics of the magnetic field in the motor airgap in order to further suppress them. The compensation signal generated by a special device adapts not only in frequency, but also in phase and amplitude of each vibration-disturbing harmonic.

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Section: Introductionmentioning

confidence: 99%

“…and airgap permeance. This method allows to reduce the magnetic force by 2 times [10]. Dobroskok's method is based on the control of the phase shift angles of voltages of the vector diagram of the SCIM and allows to reduce the magnetic noise in a wide range by 3-4 dB [3].…”

Section: Introductionmentioning

confidence: 99%

Active reduction of magnetic noise occurring in the stators of an induction motors

Ermolaev¹,

Erofeev²,

Plekhov³

et al. 2021

Vib. proced.

View full text Add to dashboard Cite

show abstract

“…4) the noise and vibrations reduction strategies including passive reduction (such as rotor and/or stator skewing [20], [21], rotor and/or stator notching [22], [23], magnetic wedges [7], flux barriers [24], etc.) and active reduction through control strategy (current injection [25], [26], effect of stator current load angle [27], damper winding [28], etc. ).…”

Section: Introductionmentioning

confidence: 99%

Experimental Benchmark for Magnetic Noise and Vibrations Analysis in Electrical Machines

Devillers

Hecquet

Cimetiere

et al. 2018

2018 XIII International Conference on Electrical Machines (ICEM)

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This article presents an experimental setup dedicated to the analysis of magnetic noise and vibrations in radial flux electrical machines. Both electromagnetic excitation and structural response of the electrical machine are simplified to provide the first benchmark of the phenomenon of electromagnetically-excited noise and vibrations. The test bench properties as well as the magnetic, vibration and acoustic upcoming extensive measurements are shared to the scientific community, providing a clear reference case to compare different modeling and simulation approaches.

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“…In inverter-fed induction motor drives, the time harmonics in the stator currents cause high-frequency audible noise [7], [13]. In case of constant-frequency PWM, these noise components are concentrated in narrow bands around integral multiples of the carrier frequency, which is irritating to the human ear [14].…”

Section: Introductionmentioning

confidence: 99%

“…An advanced space vector based PWM scheme, which employs a special type of switching sequence, has also been reported to reduce the acoustic noise in the low and medium speed ranges of the motor drive [20]. Active reduction of audible noise has also been reported by injecting additional low-power current harmonics into the stator [13].…”

Section: Introductionmentioning

confidence: 99%

Acoustic Noise Characterization of Space Vector Modulated Induction Motor Drives – An Experimental Approach

Binojkumar

Saritha

Narayanan

2014

IEEE Trans. Ind. Electron.

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This paper presents an experimental procedure to determine the acoustic and vibration behavior of an inverter fed induction motor based on measurements of current spectrum, acoustic noise spectrum, overall noise in dB, and overall Aweighted noise in dBA. Measurements are carried out on spacevector modulated 8-hp and 3-hp induction motor drives over a range of carrier frequencies at different modulation frequencies.The experimental data helps to distinguish between regions of high and low acoustic noise levels. The measurements also bring out the impact of carrier frequency on the acoustic noise. The sensitivity of the overall noise to carrier frequency is indicative of the relative dominance of the high-frequency electromagnetic noise over mechanical and aerodynamic components of noise. Based on the measured current and acoustic noise spectra, the ratio of dynamic deflection on the stator surface to the product of fundamental and harmonic current amplitudes is obtained at each operating point. The variation of this ratio of deflection to current product with carrier frequency indicates the resonant frequency clearly and also gives a measure of the amplification of vibration at frequencies close to the resonant frequency. This ratio is useful to predict the magnitude of acoustic noise corresponding to significant time-harmonic currents flowing in the stator winding.

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Active reduction of audible noise exciting radial force-density waves in induction motors

Cited by 24 publications

References 14 publications

Active reduction of magnetic noise occurring in the stators of an induction motors

Active reduction of magnetic noise occurring in the stators of an induction motors

Experimental Benchmark for Magnetic Noise and Vibrations Analysis in Electrical Machines

Acoustic Noise Characterization of Space Vector Modulated Induction Motor Drives – An Experimental Approach

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Active reduction of audible noise exciting radial force-density waves in induction motors

Cited by 24 publications

References 14 publications

Active reduction of magnetic noise occurring in the stators of an induction motors

Active reduction of magnetic noise occurring in the stators of an induction motors

Experimental Benchmark for Magnetic Noise and Vibrations Analysis in Electrical Machines

Acoustic Noise Characterization of Space Vector Modulated Induction Motor Drives &#x2013; An Experimental Approach

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Acoustic Noise Characterization of Space Vector Modulated Induction Motor Drives – An Experimental Approach