田口法於永磁調速器之熱傳性能分析

Performance Analysis of Heat Transfer of Magnet Adjustable Drive by Using Taguchi Method

蔡孟甫(Meng-Fu Tsai)

指導教授 ： 許政行

中原大學/工學院/機械工程研究所/碩士(2014年)

https://doi.org/10.6840/cycu201400594

摘要

本研究使用ANSYS-FLUENT軟體對永磁調速器之熱傳性能作模擬分析，搭配田口法找出最合適之模型幾何以提升產品之散熱效果，使永磁調速器內之磁石不因運轉中之高溫影響磁力導致產品的動力傳輸效果衰退。
　　本文以增加驅動及負載端間隙之流量為思考方向，透過改變設計使更多流體流經間隙以帶走由磁石所產生之熱能。模擬流程共分為三階段：(一)、由原始設計之流場檢視分析，訂定田口控制因子。(二)、執行流場之田口模擬分析。(三)、由田口分析彙整出最佳因子組合，導入磁石發熱量模擬溫度分布並計算改善設計較原始設計之散熱提升效率。
　　藉由田口分析，可得望大最佳因子組合為葉片後傾、原始葉片傾角、葉片數量5片、原始葉片跨角、腰子孔、孔傾角15∘、支撐柱後傾、簡化後之I型支撐柱，即代號為A2-B1-C3-D1-E3-F2-G3-H2之因子組合，影響間隙流量之關鍵因素則為葉片傾角、支撐柱型式及葉片數量。而改善設計較原始設計之磁石平均降溫效率有4.13%的提升，系統溫度均勻度更達8.12%的效能提升。

關鍵字

田口法 ； 永磁調速器 ； 計算流體力學軟體ANSYS-FLUENT

並列摘要

In this experiment, using the software, ANSYS-FLUENT to simulate and analyze the thermal efficiency of Magnet Adjustable Drive, and by using Taguchi method to find out the most efficient heat transfer model in order to reduce the temperature influence of magnet in the Magnet Adjustable Drive for the purpose of avoiding power transmission decrease.

In this case, taking the addition of power and the flow rate of gap on loading side as control variable, and by changing the design for increasing the flow rate passing the gap in order to take away the heat which was generated by magnet. There are three stages in simulation process. First of all, we analyze the flow field from the original design and determine the control factors in Taguchi method. Second, we simulate the flow fields by Taguchi method. Final, we find out the optimal combination of factors by Taguchi method, and take with the magnet heating simulation so as to calculate the thermal efficiency and improve the efficiency of original design.

In this simulation and analysis by Taguchi method, the optimal combination of factors is A2-B1-C3-D1-E3-F2-G3-H2, and the key factor of the impact with flow rate of the gap is the angle of fan, the type of I-beam and the number of fans. Comparing with the original design, the thermal efficiency of magnet is upgraded 4.13 percentage, and the uniformity of system temperature is elevated up to 8.12 percentage.

並列關鍵字

CFD by ANSYS-FLUENT ； Taguchi Method ； Magnet Adjustable Drive

參考文獻

【5】 楊紹韡, “磁流變制動器效能分析”, 中原大學機械工程學系碩士論文, 2013

【9】 陳其亮, “錳鋅鐵氧磁體磁熱耦合問題之分析”, 中原大學機械工程學系碩士論文, 2001

【13】 虎門科技股份有限公司, “ANSYS Workbench 14.0”

【14】 “永久磁鐵磁石特性說明”, 利燁科技股份有限公司

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