Integrated motor propulsor magnet design with halbach array for torque ripple reduction

Ahn, Junseong; Park, C.; Choi, Soo Jin; Choi, Jang-Young; Jang, Seok–Myeong

doi:10.1109/intmag.2015.7157791

Cited by 2 publications

(2 citation statements)

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“…Finally, the real part and the imaginary part and the position of the pair of poles relative magnetic flux can be obtained as shown in Figure 11. c = lnR s + jθ 2 (27) p = √ w-b w-a…”

Section: The Magnetic Field Of the Slotted Modelmentioning

confidence: 99%

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A Method for Reducing Cogging Torque of Integrated Propulsion Motor

Mao

et al. 2019

JMSE

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How to reduce the cogging torque of the integrated propeller motor is an important means to improve its noise performance because cogging torque is one of the key factors causing torque ripple. We proposed a method to reduce the cogging torque by optimizing the size of the Halbach array’s auxiliary pole. First, an analytical model for the airgap magnetic field of Halbach array based on different dimensions (including the circumference ratio and the radial thickness) of the auxiliary pole is given. Then the finite element method is used to verify the analytical model. On the basis, we calculated the cogging torque of different size of auxiliary poles as sample data by combining different circumference ratio and radial thickness. Furthermore, using the two-variable single-objective neural network genetic optimization algorithm based on Backpropagation (BP), we obtain the optimal size of the auxiliary pole. Finally, comparing the motor cogging torque and torque ripple before and after optimization indicated that the cogging torque and torque ripple are effectively reduced after optimizing the size of the auxiliary pole.

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“…Finally, the real part and the imaginary part and the position of the pair of poles relative magnetic flux can be obtained as shown in Figure 11. c = lnR s + jθ 2 (27) p = √ w-b w-a…”

Section: The Magnetic Field Of the Slotted Modelmentioning

confidence: 99%

“…Compared with the traditional form of propulsion motor, the Integrated Motor Propulsor (IMP) is popular because of its compact structure, modular design and assembly and disassembly, no need for dynamic sealing, and low noise [1,2]. However, for conventional propeller motors of the same power, the IMP has a much larger diameter.…”

Section: Introductionmentioning

confidence: 99%