功率模組微流道冷板開發研究

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姓名

沈佩潔(Pei-Jie Shen) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

功率模組微流道冷板開發研究

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摘要(中)

交流馬達驅動器是現代電力電子和微控系統中最重要的裝置之一。在電力轉換過程中，部分電能會轉換為熱能。驅動器產生的熱量必須透過冷板散發至大氣，以避免驅動器過熱。傳統冷板大多是利用鋁塊鑽孔來作為冷卻液流道。然而，由於鑽孔工藝的限制，流道通常較大，導致冷板過於沉重且熱傳性能較差。
本研究開發了一種使用扁平鋁擠型管的微流道冷板，並對其與鋁塊冷板的熱傳性能進行了測試與比較。測試結果顯示，微流道冷板的熱傳性能遠優於鋁塊冷板。在相同的冷媒流量為3.0 GPM的條件下，微流道冷板能在表面最高溫度低於120 ℃的標準下，散熱22 kW；而鋁塊冷板在相同操作條件下只能散熱13 kW。在加熱功率為13kW的情況下，鋁塊冷板的最高表面溫度為120°C，而微流道冷板的最高表面溫度為54°C。

摘要(英)

AC Motor Drive is one of the most important devices used in modern power electronics and micro control systems. During the power conversion process, part of the electricity converted into heat. The heat generated from the drive must be dissipated to the atmosphere by a cold plate to avoid overheating of the drive. Most of the traditional cold plates are made of aluminum blocks by drilling channels in it to serve as the coolant flow passages. Owing to the limitation of drilling process, the flow passages are generally large and caused the cold plate heavy and low heat transfer performance.
This study developed a microchannel cold plate by applying extruded Aluminum tubes. Heat transfer performance of this microchannel cold plate and a traditional Aluminum block clod plate were tested and compared. The test results show that the heat transfer performance of the microchannel cold plate is much better than that of the Aluminum block cold plate. At the same coolant flow rate of 3.0 GPM, the microchannel cold plate is able to dissipate 22 kW heat under the criteria that the highest surface temperature below 120 ℃. While the Aluminum block cold plate can dissipate only 13 kW under the same operation conditions. Under a heating power of 13 kW, the maximum surface temperature of the Aluminum block cold plate is 120°C, while the maximum surface temperature of the microchannel cold plate is 54°C.

關鍵字(中)

★ 流動沸騰
★ 冷板
★ 微流道

關鍵字(英)

★ flow boiling
★ cold plate
★ microchannel

論文目次

摘要 i
Abstract ii
目錄 iii
圖目錄 v
表目錄 x
符號說明 xi
第一章、前言 1
1.1 研究背景與動機 1
1.2 研究目的 16
第二章、文獻回顧 17
2.1 微流道冷板 17
2.2 兩相流體在多個平行流道內流動分布不均的原因 21
2.2.1 平行流道和集管擺放方向 22
2.2.2 改善集管內流動分布不均勻的方法 23
第三章、研究方法 27
3.1 測試段 27
3.1.1 插入深度相同的微流道冷板 27
3.1.2 插入深度不同的微流道冷板 30
3.1.3 縮小尺寸的微流道冷板 33
3.2 實驗系統 35
3.2.1 壓縮系統 35
3.2.2 泵系統 37
3.3 實驗量測儀器與設備 39
3.3.1 溫度量測 39
3.3.2 流量量測 39
3.3.3 壓力量測 39
3.3.4 差壓量測 39
3.3.5 資料擷取系統 40
3.4 實驗步驟 40
3.4.1 壓縮系統 40
3.4.2 泵系統 41
3.5 實驗數據換算 42
3.5.1 加熱瓦數 42
3.5.2 流量 42
3.5.3 出口乾度 43
第四章、實驗結果與討論 47
4.1 微流道冷板裝於膨脹閥前之熱傳性能 47
4.1.1 插入深度相同的微流道冷板 47
4.1.2 插入深度不同的微流道冷板 49
4.1.3 現有鋁塊冷板與微流道冷板性能比較 53
4.2 微流道冷板裝於膨脹閥後之熱傳性能 55
4.2.1 插入深度相同的微流道冷板 55
4.2.2 插入深度不同的微流道冷板 58
4.2.3 兩個微流道冷板性能比較 61
4.3 縮小尺寸的微流道冷板之熱傳性能 63
4.4 壓降性能之測試結果 67
第五章、結論 72
參考文獻 74
附錄(一)、實驗誤差分析 77

參考文獻

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[5] 交流馬達驅動器液體冷卻，取自:https://www.kebamerica.com/blog/liquid-cooling-vfd-increases-efficiency-and-savings-in-plastics-machinery/
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[8] HBIS Steel Group, Inc.: Aluminium Micro-Channel Tube, 取自: https://hbis-steel.com/portfolio-item/aluminium-micro-channel-tube
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指導教授

楊建裕

審核日期

2025-1-23

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