考慮不同線槽形狀及軸承狀況之感應電動機運轉特性量測與分析

Analysis of the induction motor operation measurement considering different slot shape and bearing condition

黃義閎(Yi-Hong Huang)

指導教授 ： 李俊耀

中原大學/電機資訊學院/電機工程研究所/碩士(2016年)

https://doi.org/10.6840/cycu201600845

摘要

本研究提出電動機線槽改良法(Slot-shape refined method, SSR)，此方法係針對電動機之轉子線槽及定子線槽形狀，以延長轉子線槽長度，並減少定子線槽面積之方式進行改良。為瞭解SSR改良法之有效性，本研究以Ansoft Maxwell軟體完成三相四極1.5kW鼠籠式感應電動機(Squirrel cage induction motor, SCIM)之結構建模，並模擬其轉速及磁通密度。為確認本建模模型之正確性，本研究利用轉速計及霍爾傳感器，分別實際量測其轉速及磁通密度變化，確認本建模模型可模擬實際電動機之轉動特性。另外，本研究調整建模模型之阻尼係數，模擬轉子軸承潤滑不足故障，為確認此參數之正確性，本研究實際降低轉子軸承潤滑程度，並紀錄轉速及磁通密度變化，確認此模擬參數可模擬實際電動機軸承潤滑不足問題。研究結果顯示，利用本研究所提出之SSR改良法，即使在電動機軸承潤滑不足情況下，也能提升電動機運轉特性。

關鍵字

鼠籠式感應電動機 ； 電動機線槽改良法 ； 轉速計 ； 霍爾傳感器 ； 磁通密度

並列摘要

This thesis proposed a slot-shape refined method (SSR) to improve the efficiency of motor operation by changing the length of rotor slots and the area of stator slots. A refined slots motor model based on the proposed SSR method is constructed by using Ansoft Maxwell software and the speed and flux density of the motor can be simulated by the software, in which the motor is 1.5kW three-phase four-pole squirrel cage induction type. The speed and flux density of a practical motor is measured by using a tachometer and hall sensor, respectively, to verify the accuracy of the motor model. Additionally, the damping coefficient in the model is adjusted to simulate the motor with bearing without lubrication. To verify the correctness of the parameter, this thesis practically reduces the lubrication of a motor and records its speed and the flux density. Results show that the model can simulate the actual motor with bearing without lubrication. Results show that SSR proposed by this thesis can improve the speed and stability of a motor even in bearing without lubrication.

並列關鍵字

SCIM ； slot-shape refined method ； tachometer ； hall sensor ； flux density

參考文獻

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