臺灣博碩士論文加值系統

　　由於一般變速控制的感應馬達通常並非在全負載的狀態下運轉，因此若磁通可隨著負載而調整以減少馬達的損耗，將可使馬達隨時在最佳效率點運作，以更有效利用電力資源。本論文提出一種簡單、容易實現，適合於向量控制感應馬達最佳效率控制方法，此方法最大的特色是利用控制馬達的功因使馬達不論在任何負載下，激磁電流隨著負載改變而使馬達維持在最佳效率的狀態下運轉。除了理論分析與電腦模擬之外，並將實作一馬達效率控制系統來驗證理論分析的結果。

Since the vector controlled drive for variable speed applications are usually not running with full-load, therefore if the rotor flux can be adjusted according to the load torque then the motor operating losses can be reduced. The purpose of this thesis is to develop a practical optimal efficiency control scheme that is suitable for the vector controlled drives in variable speed applications. The proposed control scheme utilized the power factor as the control variable to modify the motor magnetizing current in order to maintain a minimum loss operation of the motor. In addition to theoretical analysis and computer simulations, various experiments were also performed to verify the proposed control scheme.

中文摘要
英文摘要
目錄I
圖表目錄III
符號說明VI
第一章 緒論1
1.1研究背景1
1.2研究目的4
1.3文獻回顧4
1.4研究範圍7
1.5論文大綱8
第二章原理說明9
2.1轉子磁場導向控制9
2.2馬達運轉損失模式12
2.3最佳效率控制方法17
2.4實驗模擬結果22
第三章 控制系統架構與馬達參數量測31
3.1硬體結構31
3.2軟體結構33
3.3馬達參數量測38
第四章 實驗結果與討論43
4.1電流迴路補償43
4.2向量控制器之調整44
4.3功率因數計算51
4.4損失與功率因數之特性曲線實驗53
4.5最佳效率控制61
第五章 結論72
附錄一74
附錄二75
參考文獻76

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