Noise and cogging torque reduction in brushless DC ceiling fan

Saxena, Anchal; Fernandes, B. G.

doi:10.1109/icems.2015.7385246

Cited by 10 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [21], the noise of the BLDC motor used in a ceiling fan is measured in the acoustic noise testing facility and the frequency spectrum ranging from 50 Hz to 8 kHz is captured. It is observed that there are peaks at certain frequencies in the noise spectrum.…”

Section: Introductionmentioning

confidence: 99%

A Simple Four-Phase Switched Reluctance Motor Drive for Ceiling Fan Applications

2023

View full text Add to dashboard Cite

A simple four-phase switched reluctance motor (SRM) drive for a ceiling fan is presented in this paper. Here, an asymmetric bridge converter is preferred due to its independent phase control and simple design. The proposed four-phase asymmetric bridge converter based SRM drive has no speed and current feedback loops, thereby eliminating the use of current sensors and complex computational logic. Position sensing is carried-out using hall-effect sensors in the proposed drive. Analytical and simulation studies are carried-out on the proposed drive and the results are presented. To verify the efficacy of the drive a prototype of motor and drive are fabricated. Experimental results show that the proposed SRM drive has low current ripple and acoustic noise as required in ceiling fan applications.

show abstract

Section: Introductionmentioning

confidence: 99%

A Simple Four-Phase Switched Reluctance Motor Drive for Ceiling Fan Applications

2023

View full text Add to dashboard Cite

show abstract

“…Saxena and Fernandes tried to reduce the cogging torque, which is the most important factor in reducing the noise of fan motors. In order to achieve this, they tried to find a solution by magnet skew by single step and by changing the stator tooth shape [Saxena and Fernandes, 2015].…”

Section: Introductionmentioning

confidence: 99%

Dış Rotorlu Yüzeye Monte PMSM için Vuruntu Momentinin İncelenmesi

Mutluer¹

2021

European Journal of Science and Technology

View full text Add to dashboard Cite

One of the most important structural problems for permanent magnet synchronous motors is the cogging torque. One of the most effective ways to reduce the cogging torque is that magnets or slots are skewed. However, this will negatively affect the motor cost and production time. On the other hand, the cogging torque depends on the change in the reluctance of the motor in the air gap during operation. Therefore, the most important design approach to reduce the cogging torque is to examine the parameters that affect the air gap reluctance. In this study, the change of air gap reluctance of surface mounted permanent magnet synchronous motor with outer rotor during operation is investigated. For this purpose, the five most important parameters affecting the air gap reluctance change are selected. In this way, the best motor model with low cogging torque is tried to be obtained.

show abstract

“…The electromagnetic force (EMF) harmonics that related to the torque ripple need to diminish as solution of this issue. Higher vibrations and noise will reduce the overall fan performances [5][6][7].…”

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

View full text Add to dashboard Cite

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.

show abstract

Noise and cogging torque reduction in brushless DC ceiling fan

Cited by 10 publications

References 7 publications

A Simple Four-Phase Switched Reluctance Motor Drive for Ceiling Fan Applications

A Simple Four-Phase Switched Reluctance Motor Drive for Ceiling Fan Applications

Dış Rotorlu Yüzeye Monte PMSM için Vuruntu Momentinin İncelenmesi

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

Contact Info

Product

Resources

About