Analysis of acoustic noise from electromagnetic torque ripple for brushless DC motor

Xia, Kun; Lü, Jing; Dong, Bo; Bi, Chuan‐Xing

doi:10.1109/apmrc.2016.7524290

Cited by 5 publications

(2 citation statements)

References 1 publication

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“…This calculation method is significantly faster than all relevant traditional methods of repetitive integration in the time domain [9]. Computational efficiency impacts the result of signal processing in the frequency domain versus the time domain [10].…”

Section: Significance Of the Nvhmentioning

confidence: 99%

Simulation-based study of noise, vibration, and harness of BLDC motor for energy level variation with frequency

Kardile,

Pathan

2023

J. Phys.: Conf. Ser.

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The energy spectrum measurements in noise, vibration, and harness analysis with power spectrum response is a very ancient concept. The work and energy approaches for analyzing Noise, Vibration, and Harmonics (NVH) features are increasing rapidly in recent years. The primary focus is on evaluating imparted energy due to the NVH using an FFT spectrum against the input energy in motors. The simulation depicts the input energy spectra of the kinetic energy, absorbed energy, and dissipated energy very clearly. Earlier the smoothed Fourier amplitude spectrum approach was used for plotting the energy dissipation due to the NVH effect. However, most of the part of accountable energy goes to waste with noise, vibration, and harmonics generated due to harness in motor design. This experiment is conducted in support of Sir Nikola Tesla’s statement “If you wish to understand the universe think in terms of energy, frequency, and vibration”. The ripples an induced in phase current because of the step change of the speed. The predominant frequency in phase current waveform creates the collapsing vibratory waves that create the sound. Sound frequencies above 20 dB are considered unwanted sound known as noise. The energy level variation with NVH influence in BLDCM is measurable for its performance analysis. This research can be further enhanced by designing NVH-free BLDC motors.

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Section: Significance Of the Nvhmentioning

confidence: 99%

Simulation-based study of noise, vibration, and harness of BLDC motor for energy level variation with frequency

Kardile,

Pathan

2023

J. Phys.: Conf. Ser.

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“…The operation of the motor to run the HVLS fan is depending on the smoothest torque is produced. When the ripples occur the motor, stability is interrupted thus affect the existence of noise and vibrations [1][2][3][4]. Commonly, this issue is related to the torque ripple due to the interactions between stator and rotor.…”

Section: Introductionmentioning

confidence: 99%

Analysis on EMF characteristics for torque ripple reduction in BLAC motor intended for HVLS fan application

Abdullah

Othman

Karim

et al. 2020

IJPEDS

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This paper analyzes the harmonic characteristics of electromagnetic force (EMF) in Brushless Alternating Current (BLAC) motor for High Volume Low Speed (HVLS) fan application. Vibration and noise are one of the main crucial things in HVLS fan application. It comes from torque ripples which can be detected by harmonics of Electro Magnetic Force (EMF). Commonly, there are a few methods to eliminate the noise and vibrations issue, but most literatures only focus on small motor and not intended for HVLS fan application. Thus, the objective of this paper is to eliminate the harmonics content in EMF at early stage design. Through EMF harmonics the expected torque produced could be used to select proper slot-pole number in order to eliminate the noise and vibrations issue. In here, the analysis involves three different slot-pole numbers which are 18s/20p, 12s/10p and 9s/8p BLAC model, respectively. All models have similar volume of permanent magnet. The analysis is carried out using FLUX 2D Finite Element Analysis (FEA) for EMF computational and transient torque computation. Later, Fast Fourier Transform (FFT) analysis is used to calculate the harmonics of EMF. The analysis stage includes the EMF parameter analysis, harmonics and torque ripples analysis. It was found that 18s/20p has higher output torque with the lowest 5% torque ripple value. As a conclusion, this paper presents low torque ripple in point of view of the EMF characteristics in designing HVLS fan.

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Reducing acoustic noise of 3-phase hybrid stepper motor with drive mode

Peng

Yao

et al. 2021

Electr Eng

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Analysis of acoustic noise from electromagnetic torque ripple for brushless DC motor

Cited by 5 publications

References 1 publication

Simulation-based study of noise, vibration, and harness of BLDC motor for energy level variation with frequency

Simulation-based study of noise, vibration, and harness of BLDC motor for energy level variation with frequency

Analysis on EMF characteristics for torque ripple reduction in BLAC motor intended for HVLS fan application

Reducing acoustic noise of 3-phase hybrid stepper motor with drive mode

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