Assessment of torque components in brushless permanent magnet machines through numerical analysis of the electromagnetic field
Assessment of torque components in brushless permanent magnet machines through numerical analysis of the electromagnetic field
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DOI：
10.1109/tia.2005.853377
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发表时间：
2004-11
期刊：
影响因子：
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通讯作者：
D. Ionel;M. Popescu;M. McGilp;T. Miller;S. Dellinger
中科院分区：
文献类型：
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作者：
D. Ionel;M. Popescu;M. McGilp;T. Miller;S. Dellinger
针对无刷交流电机的转矩计算，提出了一种基于麦克斯韦应力理论和电机气隙中磁矢量势谐波滤波贡献的局部计算方法。该方法仅考虑空间基场，可以有效地估计各种电机拓扑（包括集中绕组设计）的平均同步转矩。介绍了一种基于虚功原理的无刷直流电动机全局分析方法，该方法以各电机区域的能量分量表示。该方法简化了平均转矩的计算，并能够直接识别齿槽和纹波分量。数学程序已通过实验和其他数值技术得到验证。
For the calculation of torque in brushless (BL) AC motors a local method is proposed, based on the Maxwell stress theory and the filtered contributions due to the harmonics of the magnetic vector potential in the motor air-gap. By considering the space fundamental field only, the method can efficiently estimate the average synchronous torque for a variety or motor topologies, including concentrated winding designs. For BLDC motor analysis a global method is introduced, based on the virtual work principle expressed in terms of energy components in various motor regions. The method leads to simplifications in the average torque calculation and enables the direct identification of the cogging and ripple components. The mathematical procedures have been validated against experiments and other numerical techniques.