Reduction of cogging torque by adopting semi circled permanent magnet

Saravanan, S.; Doss, M. Arun Noyal; Jeevananthan, S.; Vidyasagar, S.

doi:10.1109/icees.2011.5725319

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Some of them are using the shape change of laminations [2]- [3], some are using auxiliary slots and air gap profiles [4]- [5], and other are using skewing the rotor magnets and step skewing using FEA implementation [6]. Further stator slots skewing [7]- [8], adapting to different combination of slot numbers and pole numbers [9] and adapting to Isodiametric and Semi-circled magnet [1], [10] are some of the other methods used.…”

Section: Introductionmentioning

confidence: 99%

Reduction in Cogging Torque and Flux per Pole in BLDC Motor by Adapting U-Clamped Magnetic Poles

Doss¹,

Vijayakumar²,

Mohideen³

et al. 2017

IJPEDS

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A Permanent Magnet BLDC motor is designed for reduction in cogging torque and flux per pole. The cogging torque causes direct impact in permanent magnet BLDC motor performance by causing torque ripple problems. This paper proposes a new method for reducing cogging torque by adapting to U-clamped magnetic poles. Finite Element Analysis (FEA) is used to calculate the cogging torque and the flux per pole for different shapes of magnetic pole. It can be shown that the cogging torque could be greatly reduced by adapting to U-clamped magnetic poles. At the same time it is found that the flux per pole is also considerably reduced. The effectiveness of the proposed method is verified by comparing the cogging torque and flux per pole for various designs available in the literature.

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Section: Introductionmentioning

confidence: 99%

Reduction in Cogging Torque and Flux per Pole in BLDC Motor by Adapting U-Clamped Magnetic Poles

Doss¹,

Vijayakumar²,

Mohideen³

et al. 2017

IJPEDS

View full text Add to dashboard Cite

show abstract

“…Cogging torque minimization has become an important issue since the motor has to improve its performance for torque ripple sensitive applications such as electric power steering and robotics. Several experimental researches have been carried out in cogging torque minimization [1][2][3][4][5][6][7][8][9][10][11][12]. The T-shape bifurcation shows good impact on reducing cogging torque compared with reduced stator tooth techniques, which was an effective technique in stator slot modification technique.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Cogging Torque Reduction in Permanent Magnet Brushless Dc Motor Using T-Shaped Bifurcation in Stator Teeth

Doss¹,

Brindha²,

Mohanraj³

et al. 2018

PIER M

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A variety of techniques are available to reduce cogging torque in Permanent Magnet Brushless DC (PMBLDC) motors. In general, all the techniques are meant for effectively reducing the cogging torque. This paper presents a new technique for cogging torque reduction in a radial flux surface mounted PMBLDC motor by applying the proposed T-shaped bifurcation method in the stator teeth of a PMBLDC motor. The Finite Element Analysis (FEA) is carried out for the Tshaped bifurcation method applied to a PMBLDC motor, and analysis is done using Virtual Work (VW) method. The CAD software package MagNet has been used to completely analyze the T-shaped bifurcation based PMBLDC motor. FEA and CAD simulated results are compared for the reduction of cogging torque values. It is found that the cogging torque reductions in the two methods are nearly the same. The cogging torque and the flux density values of the motor calculated using the proposed T-shaped bifurcation method are compared with the corresponding values of the recently introduced Reduced Stator Slot Width method. The proposed T-shaped bifurcation is very effective compared to the existing techniques in reducing the cogging torque.

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Cogging Torque Mitigation of Modular Permanent Magnet Machines

Ren

Zhu

et al. 2016

IEEE Trans. Magn.

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Reduction of cogging torque by adopting semi circled permanent magnet

Cited by 4 publications

References 8 publications

Reduction in Cogging Torque and Flux per Pole in BLDC Motor by Adapting U-Clamped Magnetic Poles

Reduction in Cogging Torque and Flux per Pole in BLDC Motor by Adapting U-Clamped Magnetic Poles

A Novel Method for Cogging Torque Reduction in Permanent Magnet Brushless Dc Motor Using T-Shaped Bifurcation in Stator Teeth

Cogging Torque Mitigation of Modular Permanent Magnet Machines

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