Design and evaluation of a variable-flux flux-intensifying interior permanent magnet machine
Design and evaluation of a variable-flux flux-intensifying interior permanent magnet machine
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DOI：
10.1109/ecce.2012.6342480
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发表时间：
2012-11
期刊：
影响因子：
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通讯作者：
N. Limsuwan;Takashi Kato;K. Akatsu;R. Lorenz
中科院分区：
文献类型：
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作者：
N. Limsuwan;Takashi Kato;K. Akatsu;R. Lorenz
本文提出了一种设计方法，内置永磁（IPM）电机具有可变的磁通特性，使用低矫顽力的磁铁材料，以提高效率和扩展的运行速度范围。由于正Id操作和减小的负载Iq效应，在设计中使用具有Ld > Lq的磁通增强内永磁（FI-IPM）类型。讨论了电机结构和变磁通电机特性的设计考虑。此外，转子中的漏磁也被特别设计，以获得可变磁通控制中的另一个自由度。使用FEA模拟和原理验证样机的实验评估提供了所设计的机器的评估。当低矫顽力磁体的磁化水平在最佳水平下操作时，所设计的机器在提高效率和扩展转矩-速度图的范围方面显示出益处。
This paper presents a design approach for interior permanent magnet (IPM) machines with variable-flux characteristics using low coercive force magnet material for improved efficiency and extended operating speed range. A flux-intensifying interior permanent (FI-IPM) type having Ld >; Lq is used in the design due to positive Id operation and reduced load Iq effects. Design consideration of machine structures and variable-flux machine attributes are discussed. In addition, leakage flux in a rotor is specially designed to obtain another degree-of-freedom in variable-flux control as well. Evaluation of the designed machine is provided using FEA simulations and experimental evaluation of a proof-of-principle prototype machine. The designed machine shows benefits in improving efficiency and extending the range of the torque-speed map when magnetization level of the low coercive force magnet is operated at the optimal levels.