Speed control of brushless Dc motor: Review Paper

Kumar, Asok; Sami, K; Christy, A. Ananthi

doi:10.5958/0976-5506.2018.01238.x

Cited by 5 publications

(6 citation statements)

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“…In this fiercely competitive market, success hinges largely on addressing dynamic concerns like noise, vibration, and wiring harnesses. Regrettably, manufacturers have consistently encountered difficulties in finding effective solutions to noise-related problems [13]. This study would be helpful for those to establish an efficient and effective procedure for noise source identification [14].…”

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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“…Experimental Analysis of Vibration and Noise: Experimental analysis of vibration and acoustic noise in BLDC motors has been carried out using digital pulse width modulation (PWM) based control techniques [11]. Electronically commutated switches for rotor position detection have been used for motor speed control [12]. Fault isolation, based on fault signature tables, has been tested under noisy motor conditions [13].…”

Section: Literature Reviewmentioning

confidence: 99%

Power and Energy Analysis of BLDC Motors: Impact of Vibration on Performance

KARDILE,

AUTI

2023

Preprint

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This research paper focuses on the vital role of Brushless Direct Current (BLDC) motors in hybrid vehicle propulsion due to their efficiency and compact design. The primary objective is to evaluate BLDC motor performance within a vehicle chassis, with a specific focus on vibration characteristics. An innovative rotational tracker program is introduced to identify rotating machinery faults efficiently, reducing computational costs and aiding machinery selection for specific applications. The research involves comparing vibration characteristics of BLDC and stepper motors, using a 4kW BLDC motor to measure displacements along the X, Y, and Z axes within specified RPM and torque ranges while monitoring current variations during chassis installation. Findings emphasize the significance of proper motor installation in hybrid vehicle design to mitigate increased vibration levels. This study has implications for motor manufacturers and vehicle designers, underlining the importance of considering vibration performance during motor installation. It concludes by suggesting further research on broader RPM range BLDC motors and on-road measurements to advance understanding in the context of hybrid vehicle propulsion. In summary, this research explores the connection between BLDC motors, vibration characteristics, and their impact on vehicle performance, with significant implications for the automotive industry.

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“…The RMS current value of the sine current wave is determined by the area covered in a half-cycle, which typically exceeds the average current value [13]. The threshold frequency (ν) represents the motor's minimum operating frequency at which it starts to bear a loading torque [14]. These electrical parameters are measured before reaching the resonant frequencies, where the mechanical impedance remains lower.…”

Section: Introductionmentioning

confidence: 99%

“…These electrical parameters are measured before reaching the resonant frequencies, where the mechanical impedance remains lower. At these frequencies, less force is required to induce movement in the structure [14,15].…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Energy Dissipation in BLDC Motor and Analysis of Speed-Acoustic Characteristics

Kardile Balasaheb Annasaheb,

Khizar Ahmed Pathan,

Abhijeet Bhikashet Auti

et al. 2023

ARAM

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The hybrid electric vehicle combines dual propulsion systems: one employs the traditional internal combustion engine, while the other utilizes a PMDC or BLDC motor. Generally, BLDC motors exhibit an efficiency of 85% to 90%. Conversely, the PMDC motor inherently achieves an efficiency of 88% under optimal running conditions. Moreover, improving the efficiency of both motors is impeded by their design constraints. Power losses in these motors primarily stem from factors such as heat generation in the rotor (I²R losses), bearing friction, vibrations, and noise. This paper aims to investigate energy loss in a 4 kW BLDC motor manufactured by Bosch, attributable to speed-induced acoustic noise effects. Harmonic analysis of the phase current reveals the presence of odd-order harmonics, specifically those below the 11th order, resulting in current ripples. These dominant harmonic frequencies interact, ultimately generating noise and consuming a certain amount of power. These predominant frequencies correlate with fundamental electrical parameters: current frequency (Hz), RMS current (A), and threshold (%r), all associated with the motor's input power source. The 'K' factor, a parameter dependent on these three electrical factors, is calculated to determine harmonic stability. Variations in stable speeds (ranging from 1280 to 7500 RPM) are used to record 'K' factor readings. Based on IEEE Standard 85-1980 guidelines, motors are classified as either acceptable (OK) or not acceptable (not OK) according to their harmonic stability 'K' factor. Readings for each speed step are captured at a specific predominant frequency, facilitating subsequent comparisons. To validate the experimental findings, MATLAB/Simulink and a Fluke scope meter are employed to conduct power analyses for each motor, thus assessing energy loss attributed to noise. The waveform of the phase current proves instrumental in quantifying energy consumption in the BLDC motor. Notably, higher-frequency noise waves with shorter wavelengths entail greater energy consumption. Evaluating energy loss significantly contributes to the analysis of BLDC motor speed acoustics, serving to inform the design of energy-efficient hybrid electric vehicle models powered by BLDC motors, which are intended for customer service.

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Speed control of brushless Dc motor: Review Paper

Cited by 5 publications

References 0 publications

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

Power and Energy Analysis of BLDC Motors: Impact of Vibration on Performance

Simulation of Energy Dissipation in BLDC Motor and Analysis of Speed-Acoustic Characteristics

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