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研究生： 蘇冠瑋
Su, Guan-Wei
論文名稱： 切換式磁阻馬達動態電流控制器設計與實現
Design and Implementation of a Dynamic Current Controller for Switched Reluctance Motor Drive
指導教授： 鄭銘揚
Cheng, Ming-Yang
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年： 2012
畢業學年度： 100
語文別： 中文
論文頁數： 114
中文關鍵詞： 切換式磁阻馬達 、轉矩漣波 、電流控制
外文關鍵詞： Switched Reluctance Motor, Torque Ripple, Current Control
相關次數： 點閱：78  下載：5 
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    • 切換式磁阻馬達(Switched Reluctance Motor, SRM)由於其低成本以及高強健性等特點，近年來的發展與應用可說相當蓬勃。然而其雙凸極結構特性導致其運轉時產生較大的轉矩漣波，使其速度漣波較為明顯。目前針對抑制轉矩漣波之研究多採用高階控制器及複雜的迴路設計，雖然其效果不錯，然而其整體成本大幅上升，連帶使得應用場合受限。
    　　為了實現以低成本的控制結構達到抑制轉矩漣波之要求，本論文分析SRM輸出轉矩之特性曲線，探討傳統使用定電流控制之缺點，並規劃一動態電流形式的轉矩命令彌補其不足。並進一步將SRM繞阻電感值造成之電流動態誤差納入考量，提出一以模糊邏輯為基礎之動態PI電流控制架構。最後以一低價位的微控制器搭配自行設計與實作之軟硬體周邊，驅動控制一三相6/4SRM進行控制器性能驗證。由實驗結果證實，使用本論文提出的模糊動態PI電流控制器配合定轉矩命令驅動SRM，能夠有效地降低SRM的轉矩漣波峰值。

    The increasing demand for switched reluctance motors has attracted considerable attention due to their benefits such as low cost and high robustness. However, inevitable speed ripple exists since the torque ripple is caused by the inherent double salient structure. Related researches have utilized sophisticated control techniques to solve this problem, while the complicated structures often rely on the high quality digital-signal-processor (DSP) to be realized, giving rise to the implemented cost and conflicting with the original benefits.
    This thesis proposes a fuzzy logic control based PI controller to deal with the aforementioned problem. A dynamic current compensator is involved to improve the corresponding performance of the output torque, in which the current error due to the variation of coil’s inductance is considered as well. Experimental results verify the validity of the proposed framework and design method, which shows that the torque ripple has been significantly reduced.

    中文摘要 I Abstract II 誌謝 III 目錄 V 圖目錄 VIII 表目錄 XIII 第一章 緒論 1 1.1 研究背景與動機 1 1.2 文獻回顧 2 1.3 研究方法 6 1.4 論文架構 7 第二章 切換式磁阻馬達動作原理與數學模型建立 8 2.1 前言 8 2.2 切換式磁阻馬達動作原理 8 2.3 切換式磁阻馬達結構分析 11 2.4 切換式磁阻馬達數學模型 22 2.4.1 電路方程式 23 2.4.2 機械方程式 24 2.4.3 機電耦合方程式 24 2.5 切換式磁阻馬達參數估測與資訊取得 28 2.5.1 電阻參數 28 2.5.2 電感參數 28 2.5.3 轉矩資訊 34 第三章 切換式磁阻馬達之功率轉換器與驅動方式 38 3.1 前言 38 3.2 切換式磁阻馬達之功率轉換器分析 38 3.2.1 耗能型功率轉換器(R-Dump　Converter) 39 3.2.2 非對稱半橋型功率轉換器(Asymmetric Bridge Converter) 41 3.2.3 (N+1)型功率轉換器 44 3.2.4 四階功率轉換器 48 3.3切換式磁阻馬達驅動方式 52 3.3.1電壓脈衝驅動 52 3.3.2電流控制驅動 53 3.4 結論 55 第四章 控制器設計與控制策略擬定 57 4.1 前言 57 4.2 電流控制迴路設計 58 4.2.1 磁滯電流控制 58 4.2.2 改良磁滯電流控制 60 4.2.3 PI電流控制 63 4.3 動態比例增益設計 66 4.4 模糊調變動態比例增益 71 4.4.1 模糊邏輯控制概述 71 4.4.2 模糊調變動態比例增益設計 77 第五章 系統架構與實驗結果討論 82 5.1 系統架構 82 5.2 硬體周邊設置 83 5.2.1 微處理器 83 5.2.2 MOSFET閘極驅動電路 84 5.2.3 位置感測器 87 5.3 動態電流命令規劃 88 5.4 動力測試平台與量測設置 90 5.5實驗結果與討論 92 5.5.1實驗一：開迴路導通區間對速度漣波之影響 92 5.5.2實驗二：定電流命令下電流控制器與導通區間之關係 96 5.5.3實驗三：定轉矩命令下電流控制器與導通區間之關係 100 5.6 實驗結果討論 105 第六章 結論與未來研究建議 108 6.1 結論 108 6.2 未來研究建議 109 參考文獻 110

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