Static Characteristics of Linear BLDC Motor Using Equivalent Magnetic Circuit and Finite Element Method

Kim, J.K.; Joo, S.W.; Hahn, Sung-Chin; Hong, Jung-Pyo; Kang, Donghyuk; Koo, Dae‐Hyun

doi:10.1109/tmag.2004.825033

Cited by 50 publications

(17 citation statements)

References 4 publications

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“…(6) (7) (8) In Figure 10, equivalent magnetic circuit of stator is equivalent magnetic circuit corresponding to a period of electric motor flux density distribution and Ry3 is magnetic resistance of yoke corresponding to the boundary between the periods. Figure 11 shows stator load torque change using FEA, and magnetic resistance change using equivalent magnetic circuit of stator seen from the stator for the tooth width changes.…”

Section: Tooth Width and Yoke Width Determination Considering Armaturmentioning

confidence: 99%

“…Thus in this study, instead of suffering slight accuracy compared to FEA, we propose an equivalent magnetic circuit of stator, which allows fast and simple calculations for finding tooth and yoke width that optimize load torque [6][7][8]. Generally Back-EMF and load torque show the greatest values for the tooth and yoke width ratio that has the smallest magnetic resistance to magnetomotive force of permanent magnet.…”

Section: Introductionmentioning

confidence: 99%

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Stator Shape Optimization for Electrical Motor Torque Density Improvement

Kim¹,

Kim²,

Moon³

2016

Journal of Magnetics

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The shape optimization of the stator and the rotor is important for electrical motor design. Among many motor design parameters, the stator tooth and yoke width are a few of the determinants of noload back-EMF and load torque. In this study, we proposed an equivalent magnetic circuit of motor stator for efficient stator tooth and yoke width shape optimization. Using the proposed equivalent magnetic circuit, we found the optimal tooth and yoke width for minimal magnetic resistance. To verify if load torque is truly maximized for the optimal tooth and yoke width indicated by the proposed method, we performed finite element analysis (FEA) to calculate load torque for different tooth and yoke widths. From the study, we confirmed reliability and usability of the proposed equivalent magnetic circuit.

show abstract

Section: Tooth Width and Yoke Width Determination Considering Armaturmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stator Shape Optimization for Electrical Motor Torque Density Improvement

Kim¹,

Kim²,

Moon³

2016

Journal of Magnetics

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show abstract

Section: Introductionmentioning

confidence: 99%

Stator Shape Optimization for Electrical Motor Torque Density Improvement

Kim¹,

Jun²,

Kim³

et al. 2016

World Congress on Electrical Engineering and Computer Systems and Science

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-The shape optimization of the stator and the rotor is important for electrical motor design. Among many motor design parameters, the stator tooth and yoke width are a few of the determinants of noload back-EMF and load torque. In this study, we proposed an equivalent magnetic circuit of motor stator for efficient stator tooth and yoke width shape optimization. Using the proposed equivalent magnetic circuit, we found the optimal tooth and yoke width for minimal magnetic resistance. To verify if load torque is truly maximized for the optimal tooth and yoke width indicated by the proposed method, we performed finite element analysis (FEA) to calculate load torque for different tooth and yoke widths. From the study, we confirmed reliability and usability of the proposed equivalent magnetic circuit.

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“…Kim et al [1] presented a finite element force calculation method for a single sided linear induction motor by considering the motion in which the thrust and normal forces of the sided linear induction motor were computed by Maxwell stress tensor. The static characteristics of the linear motor with air-bearings were analyzed by Kim et al [2] using the equivalent magnetic circuit and finite element method. The dynamic characteristics analysis and experiment on the moving-magnet linear actuator with cylindrical Halbach array were performed by Jang [3], in which the control parameters were obtained on the basis of two dimensional analytical solutions and experiments.…”

Section: Introductionmentioning

confidence: 99%

Air-bearing position optimization based on dynamic characteristics of ultra-precision linear stages

Chen

2008

Front. Mech. Eng. China

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Air-bearings are installed between the stator and the mover of ultra-precision linear stages to suppress vibration and mechanical contact. Spring-damping elements are used to emulate the complex interaction of the finite element model (FEM) developed in this paper and the system dynamic behaviors are analyzed. Through the experimental modal test, the validity and reliability of the model are proven. However, the dynamic characteristics including mode frequency, mode shape, and response amplitude are obviously changed with the position of air-bearings. The combined optimization method is used to optimize the air-bearings position. The best and worst positions are obtained using the dynamic characteristic analysis. The method can be generalized to the connection position of different components in manufacture elements and to implement the system dynamic characteristics optimization when the connection position can be changed.

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Static Characteristics of Linear BLDC Motor Using Equivalent Magnetic Circuit and Finite Element Method

Cited by 50 publications

References 4 publications

Stator Shape Optimization for Electrical Motor Torque Density Improvement

Stator Shape Optimization for Electrical Motor Torque Density Improvement

Stator Shape Optimization for Electrical Motor Torque Density Improvement

Air-bearing position optimization based on dynamic characteristics of ultra-precision linear stages

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