使用鋁線作為線圈繞組之鋁線馬達相較於市面主流之銅線馬達具有重量輕、成本低廉之優勢，但因導電率較差之緣故，普遍存在體積龐大且性能較差之劣勢，而銅包鋁線（Copper clad Aluminum Wire, CCAW）為兼具鋁線與銅線特性之複合線材，且比重、價格、導電率皆折衷於兩者之間，極具商機與工業應用價值，亦有國外文獻研究應用銅包鋁線於永磁馬達設計中，能有效達到重量減輕與降低成本之目的，唯體積與性能方面相較於銅線馬達仍有待加強。
為解決上述之問題，本文選擇車用水泵馬達為研究對象，首先將探討CCAW之基本特性，並與銅線進行比較，將材料之差異導入馬達設計概念中，提出快速且有效率地將現有銅線設計轉換為適用於CCAW規格之完整設計流程，於馬達體積與材料用量之限制條件下，透過定子分割比（Split Ratio）設計、線圈參數設計、齒槽參數設計等方式，於成本重量與馬達性能中選擇最佳平衡之參數，完成一體積維持固定但重量、成本降低，且額定操作點性能優於銅線馬達之設計，最後透過有限元素分析(FEA)軟體模擬搭配實作加以驗證。

The motor using aluminum wire as the coil windings has the advantages of light weight and low cost compared with the motor with copper windings in the mainstream market, but the relatively low electrical conductivity of aluminum could leads to some defects in motor volume and performance. Copper clad aluminum wire (CCAW) is a composite wire which has the characteristics of both copper and aluminum. Therefore, in terms of specific gravity, price, and electrical conductivity, CCAW is a trade-off between the two materials with great business opportunities. Many literatures on the application of CCAW to design of permanent magnet motor have shown that the purposes of weight and cost reduction can be effectively attained, however, volume and performance still need to be improved.
Due to the problems mentioned above, in this thesis, the vehicle water pump motor is chosen as the research object. To start with, the basic characteristics of CCAW will be discussed and compared with the copper wire, the difference of materials will be implemented into the motor design process which can quickly and efficiently convert copper windings into CCAW ones. Under the constraints of motor volume and material consumption, the best balance between cost and performance will be found by parametric modelling of the split ratio, coil windings and stator design. Through the FEA software simulation, the result shows that the final design with fixed volume not only reduces the weight and cost but improves the performance of rated point.

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