Analysis and Optimization of Cogging Torque in Yokeless and Segmented Armature Axial-Flux Permanent-Magnet Machine with Soft Magnetic Composite Core

Xu, Longjiang; Xu, Yanliang; Gong, Jinlin

doi:10.1109/intmag.2018.8508084

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…However, the interval between the rotor poles of the motor is larger, the air-gap flux density distribution is not uniform, and the torque ripple is relatively large in the low-speed operating range [20]. The air-gap flux density of the structure with radial arrangement of permanent magnets is relatively low and is mainly used in microand low-power generators [21]. Therefore, in this paper, we propose a radial-tangential built-in combined permanent magnet pole generator to achieve high air-gap flux density while ensuring uniform magnetic field distribution, as shown in Figure 1.…”

Section: Magnetic Circuit Analysismentioning

confidence: 99%

Multi-Objective Optimization Design of a Radial-Tangential Built-In Combined Permanent Magnet Pole Generator for Electric Vehicles

Zhang

Liu³

et al. 2023

Electronics

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In this paper, a multi-objective optimization method is proposed to address the problem in the optimization process of the generator that only a specific index of a generator can be optimized to the neglect of other performance indices. Based on the equivalent magnetic circuit method, a mathematical model of the magnetic circuit of a radial-tangential combined permanent magnet pole generator is established, and the expression of the cogging torque including the pole offset angle is derived. The pole offset angle is proposed as the design variable, and no-load induction potential, air-gap flux density, and cogging torque are used as optimization targets. The relative optimal designs of permanent magnet generators are based on Pareto front statistics and defined parameter matching coefficients. Finally, a prototype is made based on the optimal structural parameters. According to the experimental results of the prototype, the correctness of the theoretical analysis and the effectiveness of the optimal design are verified.

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Section: Magnetic Circuit Analysismentioning

confidence: 99%

Multi-Objective Optimization Design of a Radial-Tangential Built-In Combined Permanent Magnet Pole Generator for Electric Vehicles

Zhang

Liu³

et al. 2023

Electronics

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“…However, the design and optimisation are based on three‐dimensional finite element method (3D FEM) leading to a complicated and time‐consuming procedure. The optimisation problem of an AFPM with the soft magnetic composite core is studied in [29] using RSM. Similar to the previous literature, 3D FEM is carried out in the optimisation process leading to high computational time.…”

Section: Introductionmentioning

confidence: 99%

Design, modelling and optimisation of a slot‐less axial flux permanent magnet generator for direct‐drive wind turbine application

Ghaheri

Ajamloo

Torkaman

et al. 2020

IET Electric Power Applications

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Axial flux permanent magnet machines (AFPMs) are potential candidates for direct‐drive wind turbines (DDWTs) due to offering high value of torque density. In slotless AFPM topologies, the cogging torque is absent which makes them more suitable for DDWTs, which provides an easier turbine start‐up. In this research, a robust design and optimisation procedure of a slotless double‐sided AFPM is discussed. The non‐linear magnetic equivalent circuit is established and the optimisation is performed by the response surface methodology to achieve a cost‐effective generator with high power density value. The generator is prototyped and the test results are presented comparing them with the numerical study and non‐optimised design results. To minimise the AFPM torque ripple which is necessary for DDWT application, a cost‐effective solution is proposed leading to a dramatic improvement in the AFPM torque ripple without reducing the average torque.

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Minimization of Torque Fluctuation in Disc Type In-Wheel Motor Based on Response Surface Method and FEA

Sun

Cheng²,

Chen

2019

2019 IEEE 3rd International Conference on Green Energy and Applications (ICGEA)

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Analysis and Optimization of Cogging Torque in Yokeless and Segmented Armature Axial-Flux Permanent-Magnet Machine with Soft Magnetic Composite Core

Cited by 4 publications

References 4 publications

Multi-Objective Optimization Design of a Radial-Tangential Built-In Combined Permanent Magnet Pole Generator for Electric Vehicles

Multi-Objective Optimization Design of a Radial-Tangential Built-In Combined Permanent Magnet Pole Generator for Electric Vehicles

Design, modelling and optimisation of a slot‐less axial flux permanent magnet generator for direct‐drive wind turbine application

Minimization of Torque Fluctuation in Disc Type In-Wheel Motor Based on Response Surface Method and FEA

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