驅動馬達是電動車中的核心零件，其中驅動馬達鐵芯之主要材料為電磁鋼片，因此電磁鋼片的品質好壞將會直接影響整個馬達鐵芯的輸出效率。在傳統鉚銲接式製程的鐵芯過程中會遇到許多不可避免的問題，如鉚接不佳造成鐵芯脫落而導致驅動馬達的良率不佳，因而促使藉由感應加熱製程之膠合式鐵芯的興起。
本文將建立感應加熱電磁鋼片之數值計算方法，過程是利用交流電流通過激磁線圈產生變化的磁場而感應出渦電流。當渦電流流經電磁鋼片時，因其電阻而產生出焦耳熱並藉由熱傳導加熱，使電磁鋼片和周圍治具升溫。此外，數值模擬是透過馬克士威方程組、基本熱傳方程式、接觸熱阻模型、本構方程式及等效公式理論，並搭配有限元素分析法以獲得全區域的電磁場分佈、電磁鋼片與治具的溫度分佈及應力分佈。藉由前述之結果再分別進行二維等效模型、三維激磁線圈設計、接觸熱阻及熱應力分析。
本研究最終結果表明：可利用等效幾何模型代替實際幾何模型；藉由五種影響因子的搭配以獲得較適化之激磁線圈設計；根據接觸熱傳導分析熱接觸對電磁鋼片升溫之影響；透過熱應力分析得知電磁鋼片與治具彼此分離所須施加的力量範圍。因此，藉由本文感應加熱電磁鋼片模型之建立，不僅降低實驗之時間成本，亦能對馬達鐵芯製程的領域提供有價值的參考依據。

The drive motor is the core of the electric vehicle. The principal component of the drive motor core is electrical steel sheet. Therefore, the quality of the electrical steel sheet will directly affect the output efficiency of the entire motor core. There are lots of inevitable problems in the traditional welding process of the iron core, such as poor welding. So it promotes the glued iron core by the induction heating process.
This research establishs a finite element method for induction heating of electrical steel sheet. When alternating current flows through the excitation coil, it will make the magnetic field various and then induce eddy current. Eddy current will generate Joule heat due to the electrical resistance of the electrical steel sheet. By heat conduction, Joule heat make the temperature of the electrical steel sheet and surrounding fixtures rise. In addition, the numerical simulation of the research is the combination of Maxwell equation, basic heat transfer equation, contact thermal resistance model, constitutive equation and effective formula theories. Through finite element analysis to obtain the electromagnetic field, temperature and stress distribution in electrical steel sheet and fixtures. Based on the aforementioned results, the two-dimensional effective model, three-dimensional excitation coil design, contact thermal resistance and thermal stress analysis are discussed.
Therefore, the establishment of the effective geometric model of the induction heating electrical steel sheet model in this article not only reduces the time cost of the experiment, but also provides a valuable reference for the field of motor core manufacturing.

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