臺灣博碩士論文加值系統

　　電動機控制中心在工業界應用非常廣泛。傳統的電動機控制中心只包括機電元件與設備，而且所有連接都是採用硬接線方式，故障排除常需在大量元件與控制點間量測以找出原因，耗費人力、維修成本與時間。近年來，智慧型電動機控制中心逐步的發展與應用。智慧型電動機控制中心採用新型的智慧元件和網路技術，透過先進的技術在電動機發生故障初期即能診斷出故障的成因，大幅減少人員尋找故障的時間，加快維修速度。
　　本論文主要目的在於應用智慧型電動機控制器保護功能中的電壓、電流不平衡偵測與保護功能於電動機故障形態的診斷，所探討的狀況包含電磁接觸器積碳以及斷線等型式的電動機故障。為進行電動機故障造成三相電流不平衡的相關實驗，本論文設計的實驗架構包含智慧型電動機控制中心、感應電動機、個人電腦（包含應用軟體Matlab/Simulink與LabVIEW）、電磁接觸器與不同阻值電阻，並開發相關電動機故障模擬程式、虛擬介面儀表程式、故障判斷程式，作為電動機故障模擬、實測與診斷的研究工作平台。實驗項目包含電動機故障的軟、硬體模擬與實測，以相互驗證，協助維護人員提早了解故障原因。

Motor control center (MCC) is widely used in the industry. The conventional MCC consists of electrical and mechanical components and apparatus and all connections are in the form of hard wiring. The task of troubleshooting often needs to make measurements with a large number of components and control points, which is labor-intensive with high maintenance cost and time. In recent years, the Intelligent Motor Control Systems (IMCCs) are gaining development and applications. The IMCCs use new intelligent components and network technology and will be able to identify the type of motor fault more quickly.
In this thesis, the functions of IMCC motor protection is applied to the diagnosis of motor faults with the detection of imbalances in voltage and current. The conditions under study are carbon deposits on the electromagnetic contactor and open line circuit faults of an induction motor. An experimental platform for the diagnosis of motor faults includes an IMCC, an induction motor, a personal computer equipped with Matlab/Simulink and LabVIEW, a magnetic contactor, and resistors with numerous values resistance. Some function codes, including motor fault simulation, virtual instrumentation, and fault diagnosis, are implemented in the personal computer. Experiment works consist of both the software simulation and hardware emulation of motor faults and practical detections. It is found that the IMCC will assist the maintenance crew in diagnosing the motor faults.

摘要 I
Abstract II
表目錄 V
圖目錄 VI
第一章 緒論 1
1.1研究背景 1
1.2文獻回顧 2
1.3研究目的及方法 3
1.4分章內容 4
第二章 傳統電動機監控與保護 5
2.1 傳統馬達控制中心 5
2.2 傳統電動機故障保護 9
2.2.1短路保護 9
2.2.2超載保護 9
2.2.3欠相運轉保護 10
2.2.4欠電壓與低電壓保護 17
2.2.5接地或接零保護 18
2.2.6三相電流不平衡檢測 19
第三章　智慧型電機控制中心系統 24
3.1 智慧型電機保護控制器特色 25
3.2 智慧型電動機控制器保功能 28
3.2.1電動機積熱保護 28
3.2.2不平衡與欠相保護 31
3.2.3啟動過久保護 32
3.2.4堵轉保護 33
3.2.5過電流保護 33
3.2.6低電流保護 34
3.2.7過電壓欠電壓 35
3.2.8快速閉鎖保護 36
3.2.9壓降管理 36
3.2.10相序保護 37
3.2.11功率因數保護 37
3.3智慧型電機控制中心與傳統電機控制中心的比較 38
第四章　實驗探討 39
4.1系統架構 40
4.2情境分析 44
4.2.1情境1：當電磁接觸器積碳 44
4.2.2情境2：斷線（電磁接觸器至馬達端之間，接點脫落或斷線） 57
4.2.3情境3：斷線（斷路器至電磁接觸器端之間，熔絲燒毀、接點脫落或斷線） 64
4.3綜合分析 71
第五章　結論 72
5.1結論 72
5.2未來研究方向 73
參考文獻 74

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