本文針對內藏型永磁同步馬達(Interior Permanent Magnet Synchronous Motor, IPMSM)，以獲得較大操作區間為目的，探討其內部參數對於輸出特性之影響，同時透過電磁與結構耦合模擬分析，評估馬達輸出特性與結構強度，最終得到較佳之設計，並提出一結構修正方法，取代耦合分析來節省模擬時間。
論文首先針對馬達規格設計，並探討其特性，藉由有限元素分析，改變繞線跨距、繞線匝數、磁鐵強度、電流密度等參數，以分析其操作區間與輸出特性。其次針對結構強度探討，確保在上述得到之操作區間安全運轉，且進一步評估結構與電磁特性，不因增強結構而降低馬達輸出效益。然而耦合模擬十分耗時，為縮短研發時程，因此本文探討僅藉由結構分析，利用修正係數來達到與耦合分析相近之效果，並針對不同規格馬達，歸納出一套方法來節省耦合分析時間。最終以內藏型永磁馬達原型機驗證本研究提出之設計結果。

The goal of this thesis is to research on interior permanent magnet motors (IPM motors), including analyses for the influence of motor parameters on motor performance and establishment of the relationship between the output characteristics and rotor structural strength using coupled electromagnetic-structural analysis (ANSYS). From the above analyses, an approach is developed to predict the structural safety using solely structural analysis without the time consuming coupled simulation.
This work first investigates the design of IPM motors concerning motor parameters so that a wide operating range can be achieved. The effect of rotor ribs on IPM motor performance is also discussed to achieve a balance between the rotor strength and electromagnetic performance. This analysis is conducted using coupled electromagnetic-structural simulations since the rotor is subject to both centrifugal force and electromagnetic force. However, the coupled simulations require tremendous computing effort and this would prolong the motor development time frame. Therefore, this thesis presents a method that employs only the structural simulation combining a correction factor to accurately predict the rotor structural safety. This would significantly reduce the computational time spent in coupled simulation. A prototype is then designed, built and tested based on the previous analysis. Then, the experiments validate the design, simulations and the developed approach.

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