Development of Magnet Structure Optimization on Achieving the Cogging Torque Reduction in Permanent Magnet Machine

Nur, Tajuddin; Ling, Jeeng-Min

doi:10.23919/icems50442.2020.9291202

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…However, the vibration issue is not discussed detailed in this study. The relation between tangential magnet force and CT as shown Equation ( 2) [15] 𝑇 = 𝐿 𝑟 𝐹 𝑑𝜃…”

Section: Analysys Of Magnet and Stator Structurementioning

confidence: 99%

Effect of Combining of Shaping at Magnet Edge and Dummy Slotting at Stator Core on the Cogging Torque Reduction in Permanent Magnet Generator

Lucio Alfreido Correira,

Nur,

Duma K Y Hutapea

2024

jurnalelektro

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Effect of combining the shaping at magnet edge and dummy slotting at stator on the cogging torque reduction in permanent magnet generator was studied. The cogging torque is the most issues in permanent magnet generator application, since it effects to reduce the generator performance. A permanent magnet generator with 24 slots and 20 poles structure is presented. For purpose of study, in the beginning the permanent magnet generator with conventional structure has been investigated as the basic reference of initial structure. In order to improve the performance of the permanent magnet generator, the magnet edge was shaped but the stator core is kept remain conventional structure. It can be found that the magnet edge effects to inprove a little bit of the performance of the permanent magnet generator. In the next investigation, the magnet edge slotting and dummy slotting in stator core of the permanent magnet generator was combined. Using the FEMM 4.2, the cogging torque value of the proposed of permanent magnet generator were analysed and compared. It was found that cogging torque reduction of the permanent magnet generator with combining the dummy slotting at stator core and magnet edge shaping can reduce the cogging torque from 0.0028554 N.m (intial base line) to 0.0000165 N.m (proposed model). In other word, the cogging torque can be to around 99.42 % compared with the base line. The magnet flux density at core of the permanent magnet generator proposed can be reduced to 35 %.

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“…However, the vibration issue is not discussed detailed in this study. The relation between tangential magnet force and CT as shown Equation ( 2) [15] 𝑇 = 𝐿 𝑟 𝐹 𝑑𝜃…”

Section: Analysys Of Magnet and Stator Structurementioning

confidence: 99%

Effect of Combining of Shaping at Magnet Edge and Dummy Slotting at Stator Core on the Cogging Torque Reduction in Permanent Magnet Generator

Lucio Alfreido Correira,

Nur,

Duma K Y Hutapea

2024

jurnalelektro

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show abstract

“…Document [2] proposes a stepwise slotting shift method to decrease the cogging torque, but the process is more complicated. Literature [3] combines magnet edge slotting and magnet edge pole arc optimization to reduce cogging torque, and literature [4] reduces cogging torque by opening an auxiliary slot in the permanent magnet. Literature [5] optimizes the cogging torque by rotor PM segmented and modifying the rotor structure based on pole-arc ratio of flux barrier optimization.…”

Section: Introductionmentioning

confidence: 99%

Method for weakening cogging torque of built-in permanent magnet synchronous motor by auxiliary slot

Huang

Wang²

2022

J. Phys.: Conf. Ser.

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The cogging torque is an unavoidable property of the permanent magnet motor, which will cause the motor to generate vibration and noise during the movement, and deteriorate the motor performance. In order to decrease the cogging torque of the permanent magnet synchronous motor, by analyzing the cogging torque expression, it is known that opening auxiliary slots in the rotor can decrease the cogging torque. Influence of slot pitch on cogging torque. The simulation results show that when the slot depth is 0.6mm, the slot width is 1.7mm and the slot spacing is 1.56, the cogging torque is most obvious reduced, and the cogging torque is decreased by 53.6% compared to the non-grooved state.

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Investigation of Cogging Torque Comprehensive Reduction Method in High Precision Servo Permanent Magnet Motor

Yuan

Xiang

et al. 2022

2022 25th International Conference on Electrical Machines and Systems (ICEMS)

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Development of Magnet Structure Optimization on Achieving the Cogging Torque Reduction in Permanent Magnet Machine

Cited by 5 publications

References 6 publications

Effect of Combining of Shaping at Magnet Edge and Dummy Slotting at Stator Core on the Cogging Torque Reduction in Permanent Magnet Generator

Effect of Combining of Shaping at Magnet Edge and Dummy Slotting at Stator Core on the Cogging Torque Reduction in Permanent Magnet Generator

Method for weakening cogging torque of built-in permanent magnet synchronous motor by auxiliary slot

Investigation of Cogging Torque Comprehensive Reduction Method in High Precision Servo Permanent Magnet Motor

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