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首页> 外文期刊>Electric Power Applications, IET >Electromagnetic force density calculation in surface-mounted PM synchronous machine with rotor eccentricity by an equivalent transformation method
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Electromagnetic force density calculation in surface-mounted PM synchronous machine with rotor eccentricity by an equivalent transformation method

机译:用等效变换法计算转子偏心的永磁同步电机电磁力密度。

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摘要

An equivalent transformation method is proposed to calculate the electromagnetic force density of surface-mounted permanent magnet (PM) synchronous machine with static and dynamic eccentricities. It hypothetically transforms the original, eccentric machine into a concentric one with redistributed PM remanence and current density according to equivalent transformation principle. On the basis of the magnetic field of the concentric machine obtained by the subdomain method, the air-gap flux density of the eccentric machine is then achieved. Finally, the electromagnetic force density is predicted by the air-gap field based on Maxwell stress tensor method and analysed by the two-dimensional Fourier transform. The effectiveness of this method is verified on both static and dynamic eccentricities conditions by the finite-element method and experiment.
机译:提出了一种等效的变换方法来计算具有静态和动态偏心率的表面安装式永磁同步电机的电磁力密度。假设它根据等效的转换原理将原始的偏心电机转换为具有重新分布的PM剩磁和电流密度的同心电机。然后,基于通过子域方法获得的同心机的磁场,可以得到偏心机的气隙磁通密度。最后,基于麦克斯韦应力张量法的气隙场预测电磁力密度,并通过二维傅立叶变换对其进行分析。通过有限元方法和实验验证了该方法在静态和动态偏心条件下的有效性。

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