IPMSM with Adjustable PM Armature Flux Linkage for High Efficiency and Wide Range Operation
IPMSM with Adjustable PM Armature Flux Linkage for High Efficiency and Wide Range Operation
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IPMSM 具有可调节 PM 电枢磁通链，可实现高效率和宽范围运行
DOI：
10.1541/ieejias.121.371
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发表时间：
2001
影响因子：
--
通讯作者：
Y. Takeda
中科院分区：
文献类型：
--
作者：
Lei Ma;M. Sanada;S. Morimoto;Y. Takeda
随着电力电子器件、稀土永磁材料和电机控制技术的快速发展，内置式永磁同步电机(IPMSM)得到了广泛的应用。在一些应用中，如电动汽车和压缩机，除了要求高效率外，还要求有更大的恒功率工作范围。本文讨论了在转子磁阻间隙采用缩短磁通铁片的方法，设计了一种具有可调永磁电枢磁链的智能永磁同步电机。利用一般意义下的归一化分析，研究了所提出的IPMSM的性能。结果表明，通过铁片降低永磁同步电机的磁通水平，可以大大扩展永磁同步电机的运行范围。由于可以减小永磁同步电机的磁链，在弱磁控制方面，所提出的IPMSM只需要较少的d轴电枢电流，因此可以提高效率和功率因数，特别是在轻载和高速运行时。讨论了效率随运行条件和PM流量水平的变化规律。给出了所提出的SPMSM的效率和功率因数图。结果表明，所提出的IPMSM的高效率、高功率因数运行区域比传统的IPMSM更大，说明了所提出的IPMSM在提高效率方面的优势。在分析不同磁链下降率下的效率性能的基础上，得出了不同运行条件下的最优磁链下降方式。
With the rapid development of power electronic devices, rare earth permanent magnet (PM) and motor control technology, interior permanent magnet synchronous motor (IPMSM) is being widely used in various applications. In some applications such as electric vehicles and compressors, except for high efficiency, extensive constant-power operating range is also desired. This paper discusses an IPMSM with adjustable PM armature flux linkage by means of adapting flux-shortening iron pieces in the space of rotor's flux barriers. The performance of the proposed IPMSM is studied using normalized analysis for general meaning. It shows that the operating range of the proposed IPMSM can be greatly extended by lowering the PM armature flux level through the iron pieces. Due to the possibility of decreasing the PM armature flux linkage, the proposed IPMSM requires less 'd-axis armature current in the area of flux-weakening control, so the efficiency and power factor can be improved, especially at light load and high speed operation. The variations of efficiency relating to operating conditions and PM flux level are discussed. The efficiency and power factor map of the proposed SPMSM is presented. The maps show that the high-efficiency and high-power factor operating area of the proposed IPMSM is larger than that of the conventional one, indicating the advantage of the proposed IPMSM in improving efficiency. Based on the analysis of the efficiency performance at various decreasing rates of PM armature flux linkage, optimal decreasing pattern of PM armature flux linkage is obtained corresponding to various operating conditions.