臺灣博碩士論文加值系統

摘要

本文以矩陣轉換器應用直接轉矩控制法驅動感應電動機，矩陣轉換器為交流對交流轉換器，應用矩陣轉換器的切換策略，每一空間位置具有高、中、低三種不同的電壓向量。直接轉矩控制則是一種高性能電動機控制方法，具有快速的磁通響應和轉矩，本文結合矩陣轉換器和直接轉矩控制之優點，適當的選擇每ㄧ空間位置中兩種不同的電壓向量，有效改善感應電動機電磁轉矩漣波，實驗結果符合預期，為一高性能驅動控制系統。

關鍵詞：矩陣轉換器、直接轉矩控制、空間向量、感應電動機。

Abstract

This thesis proposes a matrix-converter-fed induction motor drive system using the direct torque control (DTC) scheme. Matrix converter is a single-stage ac to ac power conversion device. Due to the properties of the matrix converter, each space vector will provide three different status of voltage: the high, middle, and low voltages. In addition, DTC is a high performance motor control scheme with the fast torque and flux responses. This thesis combines the benefits of the DTC schemes and the advantages of the matrix converters to establish an induction motor drive system. By suitably selecting the different states on each voltage vector, the electromagnetic torque ripples of the motor are effectively reduced. As a result, a satisfactory servo drive can be achieved.

Keywords: direct torque control, matrix converter, space vector, induction motor.

目 錄
中文摘要 i
英文摘要 ii
誌謝 iii
目錄 iv
圖目錄 vii
表目錄 x

第一章 緒論 1
1.1 研究背景與動機 1
1.2 研究目的 3
1.3文獻回顧 3
1.4論文架構 8
第二章 矩陣轉換器原理與構造 10
2.1前言 10
2.2電路系統架構 12
2.3主電路架構 13
2.4 換相電路原理與步驟 15
第三章 切換法則與策略 22
3.1前言 22
3.2切換策略原理與介紹 22
3.3直接轉換型切換策略 25
3.4間接轉換型切換策略 27
3.5電流調制型切換策略 30
3.6新型電流調制型切換策略 35
3.7新型電流調制型切換策略之數學模式 41
第四章 感應電動機結構及控制理論 44
4.1前言 44
4.2原理及構造 44
4.3 感應電動機的動態數學模式 46
第五章 直接轉矩控制理論與應用 51
5.1前言 51
5.2 直接轉矩控制之數學模式 51
5.3電壓向量控制方法 56
第六章 系統設計與實驗結果 59
6.1前言 59
6.2系統架構 59
6.3主硬體架構 60
6.4控制電路與軟體程式設計 65
第七章 實驗結果 76
8.1前言 76
8.2 實測結果 76
第八章 結論與建議 89
8.1結論 89
8.2 建議 90
參考資料 91

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