臺灣博碩士論文加值系統

本論文旨在探討一新型矩陣轉換器驅動永磁同步電動機系統的設計及研製。文中，提出一類神經網路電流調制的切換策略，及一雙自由度控制器的設計，經由使用此一新型的切換策略，電流的諧波量能有效地加以抑制。此外，使用此雙自由度控制器，能獲得良好的命令追踪及加載特性。控制器的參數則利用頻域最佳化的方式求解，設計的過程僅需代數計算。相關的設計方法可應用於控速和定位系統，且控制器的實現亦相當簡單。為了改善控速範圍，文中並探討低速時的轉矩改善方法及高速弱磁的法則，所有的電流、速度及位置控制迴路均由一個32位元數位訊號處理器TMS320C40達成，使得硬體電路大為簡化，因而完成全數位化系統。使用本文所提的方法，可達成精密的定位和寬廣的控速。控速範圍能由1轉/分至2700轉/分。實驗的結果與理論分析相當符合。

This dissertation proposes a novel method for the design and implementation of a matrix converter PMSM drive system. In the dissertation, a neural-network current-regulated switching strategy and a two-degree-of-freedom controller design are proposed. By using this new switching strategy, the current harmonics of the system can be effectively reduced. In addition, by using the two-degree-of-freedom controller, both good tracking responses and load disturbance responses are obtained. The parameters of this controller are calculated by using frequency-domain optimization technique, and only a simple algebraic computation is required. The design procedures can be applied to an adjustable speed and a position control system. In addition, the realization of the controller is very simple. In order to extend the range of the adjustable speed, this dissertation studies the torque pulsation improvement at low speed and the flux-weakening control at high speed. All the control loops, including current-loop, speed-loop, and position-loop, are implemented by a 32-bit TMS320C40 digital signal processor. The hardware circuit is very simple. As a result, a fully digital control system is obtained. By using the proposed novel method, a precision position control system can be achieved and a widely adjustable speed range from 1 to 2700 r.p.m. can be obtained. Several experimental results are shown to validate the theoretical analysis.

封面
中文摘要
英文摘要
誌謝
目錄
符號索引
圖表索引
第一章 緒論
1.1 沿革
1.2 文獻回顧
1.3 研究動機及目的
1.4 大綱
第二章 永磁式同步電動機
2.1 簡介
2.2 結構及特性
2.3 永磁式同步電動機的數學模式
第三章 矩陣轉換器
3.1 簡介
3.2 電路架構
3.2.1 主電路
3.2.2 緩衝級電路
3.3 切換原理
3.3.1 直接轉換型
3.3.2 間接轉換型
3.3.3 電流調制之傳統切換策略
第四章 新型切換策略
4.1 簡介
4.2 電流調制之新型切換策略
4.3 輸出側諧波分析
第五章 控制器設計
5.1 簡介
5.2 轉矩控制
5.2.1 向量控制基本原理
5.2.2 高速弱磁控制
5.2.3 低速控制方法
5.3 雙自由度控制器的基本原理
5.3.1 回授控制器設計
5.3.2 負載干擾補償器設計
5.4 控速系統速度控制器的設計方法
5.4.1 回授控制器設計
5.4.2 負載干擾補償器設計
5.5 定位系統位置控制器的設計方法
5.5.1 回授控制器設計
5.5.2 負數干擾補償器設計
5.6 系統參數變化分析
第六章 系統設計及製作
6.1 簡介
6.2 硬體電路設計
6.2.1 驅動級和功率級電路
6.2.2 緩衝級電路及延時電路
6.2.3 回授及偵測電路
6.2.4 微處理器界面電路
6.3 軟體程式設計
6.3.1 數位訊號處理器
6.3.2 程式設計流程
第七章 模擬與實測
7.1 簡介
7.2 電腦模擬
7.3 實測結果
7.3.1 電流響應實測波形
7.3.2 轉速響應實測波形
7.3.3 位置響應實測波形
7.3.4 效率分析
第八章 結論與建議
附錄A n階系統性能指標最小化的解析解
參考文獻
作者簡介
其他

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