Analytical Comparison Between Ferrite Core and Steel Laminations Losses of Multi-Polar Brushless DC Motor

Chen, Wen-Shyue; Lin, Chang-Shien; Chen, Chern‐Lin

doi:10.1109/iecon.2007.4460318

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…From (5)(6)(7), it can be found that iron loss is mainly determined by maximum flux density Bm and frequency f. According to previous researches, at the operating frequency of HDD spindle motors, stator iron loss is trivial compared to its copper loss. Therefore, iron loss can be ignored when the efficiency of spindle motor is analyzed.…”

Section: Efficiency Analysis Of Hdd Spindle Motorsmentioning

confidence: 99%

“…Some of them can improve the efficiency to a certain extent while motor performance is optimized with torque ripple and acoustic noise reduced. Some researchers consider to use different stator materials to reduce the iron loss at high speed [7]. This would be helpful when motor reaches relatively high speed and the iron loss is significant.…”

Section: Introductionmentioning

confidence: 99%

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An approach to improvement of HDD spindle motor efficiency

Feng

2011

2011 International Conference on Electrical Machines and Systems

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To improve the efficiency of HDD spindle motor, reducing air gap length (AGL) and raising magnetic energy product (MEP) of magnetic material are considered to be efficient methods. However some disadvantages are introduced concomitantly, such as the increase of cogging torque (CT) and unbalanced magnetic pull (UMP). This paper investigates both positive and negative effects of reduction of AGL and improvement of MEP on motor characteristics and proposes methods to decrease or avoid the negative effects. Then, an optimal design which can achieve a trade-off between high efficiency and increase of CT and UMP is proposed.

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Section: Efficiency Analysis Of Hdd Spindle Motorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An approach to improvement of HDD spindle motor efficiency

Feng

2011

2011 International Conference on Electrical Machines and Systems

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“…Motor with variation on the number of poles will affect the asymmetry of the back-EMF, cogging torque, torque and reduce the electromagnetic torque ripple [5,6,7]. This paper presents the torque and magnetic field analyzes in the 3-Phase 24 poles BLDC motor.…”

Section: Introductionmentioning

confidence: 99%

Brushless DC motor torque improvement with mgnetic material stator core

Nizam

Waloyo

Mujianto

et al. 2014

2014 International Conference on Electrical Engineering and Computer Science (ICEECS)

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In transportation, BLDC motors are required to have high torque. This BLDC electric motor is designed to drive an electric car. Increased torque can be done in many ways one of which is the selection of the stator material. Effect on the generated torque can be studied by replacing its stator materials. Design was begun with determining the electrical circuit and the coil for the excitation power. Electric motors which was simulated in this paper was a 3-phase BLDC motor. Voltage and current data were analyzed to study the motor performance when different core materials used. It can be concluded that applying ferrite materials stator core reduced core loss, while using ferrite core on the stator slots produces higher voltages and lower currents. Based on the magnitude of the torque produced by the electric motors, ferrite materials was more suitable to be used as slots of the stator core for better motor.

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