輕型電動車之高力矩密度輪內馬達最佳設計

Optimal Design of a High Torque Density Wheel Motor for a Light Electric Vehicle

李忠翰(Chung-Han Lee)

指導教授 ： 陽毅平

國立臺灣大學/工學院/機械工程學研究所/碩士(2010年)

https://doi.org/10.6342/NTU.2010.00632

摘要

本研究針對輕型電動車，設計一套高力矩密度之電動馬達。文中所開發的直驅式軸向磁通直流無刷馬達，具有外觀輕薄、低重量與高效率的特色，適合用於電動車輛。
初步設計以馬達的磁通傳遞類型、設置空間與規格進行類型選取，並配合繞線因數挑選最佳的齒極比。接著以電磁學理論建立馬達二維磁路模型，藉由多目標函數最佳化軟體進行最佳設計。再以有限元素分析修正模型與驗證，並加入斜槽設計以簡化製造流程與提升力矩密度。最後，經由有限元素軟體進行熱傳分析，確保馬達可在安全的溫度下運轉。

關鍵字

車輪馬達 ； 輪內馬達 ； 力矩密度 ； 斜槽設計 ； 電動車

並列摘要

In this thesis, a high torque density electric motor is designed for light electric vehicles. This directly driven axial-flux DC motor features compactness, low weight, and high efficiency, and is suitable for electric vehicles.
First of all, the motor and winding types were selected by comparing their advantages and disadvantages, and then the winding factor was calculated to choose the optimal number of slots and poles. Second, a 2-D magnetic circuit model and the electromagnetic equations were established for an optimal motor design with multifunctional optimizer. The resulting design was verified and refined by finite element analysis (FEA). A skewed-slot design was investigated to enhance the torque density performance and simplify the manufacturing process. Finally, the thermal analysis of this motor was used to ensure it operates at a safe temperature.

並列關鍵字

wheel motor ； in-wheel motor ； torque density ； skew-slot design ； electric vehicles

參考文獻

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