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Analysis of New Modular Linear Flux Reversal Permanent Magnet Motors

机译:新型模块化线性磁通反转永磁电动机的分析

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摘要

In this paper, a new modular linear flux reversal permanent magnet (M-LFRPM) motor is proposed and analyzed. The key of the proposed motor is to adopt a new modular mover structure, hence offering the desired fault-tolerant capability and an improved force performance. Utilizing the new modular mover structure, the magnet utilization ratio of the proposed motor is significantly enhanced as compared with the existing one, resulting in a higher thrust force density. Moreover, the back electromotive force of the proposed motor is symmetrical and sinusoidal due to its complementary PM magnetic circuits. For a fair comparison, the proposed motor is designed and built based on an existing M-LFRPM motor with the similar electromagnetic and geometrical parameters. Then, their force ripples are analyzed and decomposed using the frozen permeability method due to its high accuracy for force separation, revealing that the cogging and reluctance force ripples of the proposed motor counteract each other and are significantly reduced. Finally, the electromagnetic performance of both the motors is analyzed and compared using the time-stepping finite-element method, verifying that the proposed motor definitely offers the desired fault-tolerant capability and the improved force performance viz., the reduced cogging force and the improved thrust force compared with the existing one.
机译:本文提出并分析了一种新型的模块化线性磁通反转永磁电动机(M-LFRPM)。提出的电动机的关键是采用新的模块化动子结构,从而提供所需的容错能力和改进的力性能。利用新的模块化动子结构,与现有电机相比,该电机的磁铁利用率大大提高,从而导致更高的推力密度。此外,由于其互补的PM磁路,所提出的电动机的反电动势是对称且正弦的。为了公平地比较,建议的电动机是在具有类似电磁参数和几何参数的现有M-LFRPM电动机的基础上设计和制造的。然后,由于其用于力分离的高精度,因此使用冻结磁导率法分析和分解了它们的力波动,这表明所提出的电机的齿槽力和磁阻力波动相互抵消,并且显着减小。最后,使用时间步长有限元方法分析和比较了这两种电动机的电磁性能,验证了所提出的电动机确实提供了所需的容错能力和改进的力性能,即减小了齿槽力和减小了齿槽力。与现有推力相比,推力有所提高。

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