馬達是汽車上重要的一部分，尤其是啟動馬達及發電機，而隨著汽車工業的發展及對環境保護的要求提升，混合動力汽車（Hybrid Electric Vehicle, HEV）逐漸成為重要的研究方向。一體式啟動發電機（Integrated Starter Generator, ISG）整合馬達及發電機功能於一體，是混合動力汽車的關鍵部件，其具備啟動引擎、發電、助動及剎車能量回收等諸多功能。
切換磁阻馬達（Switched Reluctance Motor, SRM）由於其結構簡單、強健性高、容錯率好、低速高轉矩等優點，是作為ISG的良好選項。因此，本文提出新型整合雙氣隙與多極轉子設計概念的切換磁阻ISG，提升轉矩密度，降低轉矩漣波，利用雙氣隙特有的雙定子結構，通過合理的功率分配，使ISG有良好的馬達及發電性能，並在較小的啟動電流下輸出需求的啟動轉矩，降低對驅動器的要求，減小驅動器成本。此外，本研究亦整合多極轉子的設計準則，建立雙氣隙切換磁阻ISG的設計流程。由於切換磁阻馬達定轉子凸極的非線性架構，本文利用有限元素分析法（FEA）對ISG的啟動、穩態運行、發電及剎車制動等狀態進行模擬分析，最後實際製作一樣機，以驗證設計及模擬結果。

The hybrid electric vehicles (HEVs) are gaining more and more attention with the concern of energy saving and carbon reduction improved. The switched reluctance motor is excellent candidate of the integrated starter-generator (ISG), which is the key component of HEVs. ISG is an important assisted power source of HEVs and PHEVs, which possesses a generator, a flywheel and a starter motor. ISG helps to starts the vehicle engine by producing a high torque and engaging the battery as a generator when the engine works steadily. This thesis investigates a novel design of switched reluctance integrated starter-generator that adopts double-gap and higher number of rotor poles than stator poles. The design not only increases the torque density per volume and fault tolerance, but also reduces the torque ripple. Moreover, the capability of motor mode and generator mode is optimized by the use of two stators. The performance of start, generate, assist and brake are analysed via finite element analysis (FEA). A prototype of this novel integrated starter-generator is made to verify the simulation result and the feasibility of double-gap design.

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