A comparative analysis of four-pole brushless DC motors with different slot and winding arrangement based on THD values

Ocak, Cemil; Dalcalı, Adem

doi:10.31593/ijeat.669064

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…The finite element analysis is used to compute the total harmonic in voltage for every different slot and pole variations. The finding of this work shows that the lowest THD corresponding to sinusoidal back emf is obtained on 15 slots 4pole design [21]. However, the harmonic studies in most literature above only focus on small motor and not intended for HVLS fan application.…”

Section: Introductionmentioning

confidence: 77%

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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Section: Introductionmentioning

confidence: 77%

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

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Effects of magnet shapes on total harmonic distortion and cogging torque in a permanent magnet synchronous generator for wind turbines

Kurt,

Dalcalı

2023

Clean Energy

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This paper explores and theoretically reports the effects of different magnet structures on the cogging torque and the total harmonic distortion of the output waveforms from a permanent magnet generator. The generator is a radial flux machine and four different structures are considered for the magnet arrangement in the rotor component and modelled in the Ansys/Maxwell electromagnetic simulation program. This three-phase machine exhibits different behaviours towards various magnet structures, i.e. rectangular, inclined slotted rectangular, skewed double rectangular and inclined slotted skewed double rectangular, respectively. It has been proven by finite element analysis and Fourier analysis that both the cogging and total harmonic distortion values vary significantly for all models. The cogging torque values change in the range of 89.95 to 436.75 mNm and the lowest cogging torque is measured for the inclined slotted skewed double rectangular magnet geometry, while the conventional rectangular magnet geometry yields the worst value with 436.75 mNm. Furthermore, the total harmonic distortion values varies between 1.63 and 3.55 for different magnetic orientations. While the worst total harmonic distortion value is obtained from the inclined slotted rectangular magnet, the best total harmonic distortion is acquired from the skewed double rectangular magnet. All these results will provide scientists and engineers with important information in order to obtain more efficient machines.

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Design Improvement of a Spoke-Type PMSG with Ferrite Magnets to Reduce Space Harmonics

Özdemir

Ocak

Dalcalı

2021

2021 5th International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT)

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A comparative analysis of four-pole brushless DC motors with different slot and winding arrangement based on THD values

Cited by 3 publications

References 23 publications

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

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

Effects of magnet shapes on total harmonic distortion and cogging torque in a permanent magnet synchronous generator for wind turbines

Design Improvement of a Spoke-Type PMSG with Ferrite Magnets to Reduce Space Harmonics

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