Interior Permanent Magnet Synchronous Motor Design for Eddy Current Loss Reduction in Permanent Magnets to Prevent Irreversible Demagnetization

Jung, Jaewoo; Lee, Byeong-Hwa; Kim, Kyu-Seob; Kim, Sung-Il

doi:10.3390/en13195082

Cited by 9 publications

(5 citation statements)

References 25 publications

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“…IPMSM generates torque from two different mechanisms. The first is the permanent magnet torque generated by the interaction of the flux between the rotor magnetic field and the stator electromagnetic field [18][19][20]. After that the IPMSM generates a second force known as the reluctance torque [21].…”

Section: Torque On Ipmsmmentioning

confidence: 99%

Effect of Parameter Modification on Torque Ripple in Interior Permanent Magnet Synchronous Motor

Farha,

Ferdyanto,

Achmad Zuchriadi

et al. 2024

emitor

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Electric motors are electromechanical machines commonly used in industry and automotive products. Interior Permanent Magnet Synchronous Motor (IPMSM) is a synchronous electric motor with a permanent magnet that is often used on electric vehicle engines. However, one of the characteristics of an electric motor with permanent magnet is the existence of torque ripples. The presence of torque ripples in electric motors can cause vibrations in the machine which affect efficiency, structural durability and operating speed. Therefore, it is necessary to make improvements or changes to the motor design to overcome this problem. This study was conducted to analyze the effect of a modification of the electric motor parameter on the torque value in the existing design. Modifications are applied to the existing design with an initial condition of torque ripples of 42.58%. This study modified the air gap, magnet angles, magnet thickness, and opening slot width. Modifications are carried out through a finite element method-based software simulation with the Taguchi method to reduce experimental configurations of design factors from 625 to 25 experiments. Through this research on parameter modification, the results of the analysis show that each modification of the design factor has an influence on the value of torque ripples. From the process of Analysis of Mean (ANOM), it can be seen that wider air gap and slot opening, the smaller torque ripples. Then, the greater magnet rib and thicker magnet cause the greater torque ripples.

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Section: Torque On Ipmsmmentioning

confidence: 99%

Effect of Parameter Modification on Torque Ripple in Interior Permanent Magnet Synchronous Motor

Farha,

Ferdyanto,

Achmad Zuchriadi

et al. 2024

emitor

View full text Add to dashboard Cite

show abstract

“…If an integer k is chosen for partitioning a dataset into k clusters and n is the number of data points of the dataset, the goal of Lloyd's (k-means) algorithm is to find k centroids so as to minimize the potential function, γ. The potential function γ is a measure of the total squared Euclidean distance between each data point and its closest centroid, as shown in Equation (5).…”

Section: Clusteringmentioning

confidence: 99%

“…Response surface methodology (RSM) is a technique used to develop a polynomial function for a complex FEM-based multi-physics model, which defines the relationship between design variables and the output response of an electrical machine [5][6][7][8][9]. This polynomial model can be used with an optimization algorithm to search for the optimal solution.…”

Section: Introductionmentioning

confidence: 99%

Application of Surrogate Optimization Routine with Clustering Technique for Optimal Design of an Induction Motor

et al. 2021

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This paper proposes a new surrogate optimization routine for optimal design of a direct on line (DOL) squirrel cage induction motor. The geometry of the motor is optimized to maximize its electromagnetic efficiency while respecting the constraints, such as output power and power factor. The routine uses the methodologies of Latin-hypercube sampling, a clustering technique and a Box–Behnken design for improving the accuracy of the surrogate model while efficiently utilizing the computational resources. The global search-based particle swarm optimization (PSO) algorithm is used for optimizing the surrogate model and the pattern search algorithm is used for fine-tuning the surrogate optimal solution. The proposed surrogate optimization routine achieved an optimal design with an electromagnetic efficiency of 93.90%, for a 7.5 kW motor. To benchmark the performance of the surrogate optimization routine, a comparative analysis was carried out with a direct optimization routine that uses a finite element method (FEM)-based machine model as a cost function.

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“…Several studies have been conducted to calculate the rotor eddy current loss of the PM motors [1][2][3][4][5][6][7]. For the axial flux permanent magnet motor, the 2D analytical model cannot accurately calculate the eddy current loss of permanent magnets.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Eddy Current Loss of 120-kW High-Speed Permanent Magnet Synchronous Motor

Pan

Tao

et al. 2022

Machines

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Pulse width modulation current harmonics and space harmonics are some of the major factors affecting the rotor eddy current loss of the high-speed permanent magnet motor. In this study, based on the principle of the equivalent current sheet, a two-dimensional motor model in a rectangular coordinate system was established. Considering the armature reaction, the end effect, and the current harmonics generated by variable frequency power supply, the eddy current loss of the rotor at different frequencies was analyzed and calculated using the analytical and finite element methods (FEM). When the frequency is between 200 Hz and 600 Hz, the variation trend of the rotor eddy current loss with a frequency obtained by analytical calculation and FEM analysis is roughly the same, and the error is still within a reasonable range. However, as the frequency continues to increase, the error between the two becomes larger and larger. Furthermore, based on the two-dimensional FE model, the influence of the sleeve material, the thickness, and the composite structure on the rotor eddy current loss were studied and analyzed. It was found that adding a graphene shielding layer between the permanent magnet and the sleeve can effectively shield the harmonic magnetic field, greatly reduce the eddy current loss of the permanent magnet, and effectively prevent the temperature of the permanent magnet from being too high, which is conducive to the continuous and stable operation of the high-speed permanent magnet motor.

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Interior Permanent Magnet Synchronous Motor Design for Eddy Current Loss Reduction in Permanent Magnets to Prevent Irreversible Demagnetization

Cited by 9 publications

References 25 publications

Effect of Parameter Modification on Torque Ripple in Interior Permanent Magnet Synchronous Motor

Effect of Parameter Modification on Torque Ripple in Interior Permanent Magnet Synchronous Motor

Application of Surrogate Optimization Routine with Clustering Technique for Optimal Design of an Induction Motor

Analysis of Eddy Current Loss of 120-kW High-Speed Permanent Magnet Synchronous Motor

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