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研究生:劉學哲
研究生(外文):LIU, HSUEH-CHE
論文名稱:功率電子元件之多重物理模擬
論文名稱(外文):Multiphysics numerical simulation of power electronics devices
指導教授:許華倚
指導教授(外文):HSU, HUA-YI
口試委員:許華倚林震王謹誠
口試委員(外文):HSU, HUA-YILIN, ZHENWANG, CHIN-CHENG
口試日期:2021-07-19
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:製造科技研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2021
畢業學年度:109
語文別:中文
論文頁數:89
中文關鍵詞:熱模擬感應發熱有限元素法
外文關鍵詞:Thermal simulationinduction heatingfinite element method
相關次數:
  • 被引用被引用:0
  • 點閱點閱:133
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本論文主要是針對電磁爐產生的溫度進行研究,總共含有實驗及模擬2個部分,實驗部分會在複合材料之鍋具中加入4公升的水,並在橢圓形之線圈輸入1300瓦特的能量加熱鍋底,同時量測線圈、鍋底及水的暫態溫度及加熱曲線。模擬部分是運用有限元素方法計算出橢圓形之線圈對不鏽鋼鍋底之歐姆損耗,得到渦電流的能量總和為1216瓦特,再基於求得到的電磁場模擬結果計算電磁爐整體的溫度場,將鍋底的能量分為560瓦特、140瓦特、265瓦特、140瓦特、30瓦特的能量分布,並將實驗求得到的數值及模擬的數值進行驗證比對,其最大誤差低於20%。
最後除了研究電磁爐整體發熱之外,被加熱之鍋具還存在有溫度不均勻的問題,本研究利用調整線圈間距為主要參數,並以鋁鍋進行模擬,分別對2mm、3mm、3.5mm、3.7mm間距的線圈進行電磁熱耦合,最後觀察出線圈間距3.7mm時發出之感應加熱之溫度最均勻,為最均勻之感應加熱間距。

This thesis is mainly to study the temperature generated by the induction cooker. There are two parts in total: experiment and simulation. The experiment part will add 4 liters of water to the pot made of composite materials, and input 1300 watts of energy into the oval coil to heat the bottom of the pot., Measure the transient temperature and heating curve of the coil, the pot and the water at the same time. The simulation part is to use the finite element method to calculate the ohmic loss of the oval coil to the bottom of the stainless steel pot, and the total energy of the eddy current is 1216 watts, and then calculate the overall temperature field of the induction cooker based on the obtained electromagnetic field simulation results, and divide the energy of the bottom of the pot. For the energy distribution of 560 watts, 140 watts, 265 watts, 140 watts, and 30 watts, and the numerical value obtained from the experiment and the simulated value are verified and compared, the maximum error is less than 20%.
Finally, in addition to studying the overall heating of the induction cooker, the heated pot still has the problem of uneven temperature. This research uses adjusting the coil spacing as the main parameter and simulates the aluminum pot, respectively, 2mm, 3mm, 3.5mm, 3.7 The coils of mm pitch are electromagnetic and thermally coupled. Finally, it is observed that when the coil pitch is 3.7mm, the induction heating temperature is the most uniform, which is the most uniform induction heating pitch.

摘 要 i
ABSTRACT ii
誌 謝 iv
目 錄 v
表目錄 viii
圖目錄 ix
第一章緒論 1
1.1 介紹 1
1.1.1研究動機與目的 1
1.2電磁感應加熱原理及應用 4
1.2.1電磁感應定律 4
1.2.2渦流 5
1.2.3趨膚效應 6
1.3文獻探討 7
1.4論文架構 17
第二章控制方程式與數值方法 18
2.1有限元素法 18
2.2有限體積法 18
2.2.1離散空間格式 18
2.3電磁場基本理論 21
2.3.1馬克士威方程組 21
2.3.2電磁場微分方程式 23
2.4熱傳遞方式 24
2.4.1熱傳導 24
2.4.2熱對流 24
2.4.3熱輻射 25
2.5熱分析控制方程式及有限元素法 25
第三章模型設定與實驗設置 28
3.1實驗器材 28
3.1.1實驗步驟 30
3.1.2量測位置 34
3.2模擬計算及邊界條件 37
3.2.1電磁場模型建立及邊界條件 37
3.2.2溫度場模擬模型建立及邊界條件 41
第四章結果與討論 48
4.1實驗量測結果 49
4.2電磁場模擬結果 58
4.3溫度場模擬結果 64
4.4消除甜甜圈效應 82
第五章結論與未來展望 86
5.1結論 86
5.2未來展望 86
參考文獻 87


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