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研究生:王旗男
研究生(外文):Chi-Nam Wang
論文名稱:多階脈寬變頻器之電動機控制系統
論文名稱(外文):Multilevel PWM Inverter Control Induction Motor
指導教授:林伯仁江煥鏗
指導教授(外文):Bor-Ren LinH.K. Chiang
學位類別:碩士
校院名稱:國立雲林科技大學
系所名稱:電機工程系碩士班
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2000
畢業學年度:89
語文別:中文
論文頁數:95
中文關鍵詞:五階脈波寬度調變數位信號處理器變頻器
外文關鍵詞:multilevelDSPPWMinverter
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本論文主要是在研製一五階脈波寬度調變變頻器來控制感應電動機,一般多階電壓源變頻器的構成是以二階為基礎來加以延伸擴展,我們可以利用任何多階脈波寬度調變的技術來完成五階變頻器的實現,藉由多階脈波寬度調變變頻器的實現,我們可以減少變頻器輸出電壓及電流諧波的產生,也可以使功率MOSFET元件能得到充分的利用,特別是可以利用低額低功率的功率MOSFET元件來達成高壓或高功率的應用,使得其電路成本可以降低。在本篇論文中我們利用MATLAB —SIMULINK 來模擬分析整個電路架構,以及用德州儀器公司所開發的數位信號處理器TMS320C50 為控制核心來控制五階脈波寬度調變變頻器並且用來控制感應馬達,藉以驗証其功用。

This paper presents a five-level diode clamp inverter control for induction motor by using simple V/F control law. Multilevel voltage source inverter is based on the extension of two-level inverter. By using the multilevel pulse width modulation scheme, we can obtain better output voltage and current waveform with less harmonics. The advantage of multilevel inverter is using low rated power MOSFET to implement high voltage or high power applications. To implement the adopted multilevel scheme for induction motor , the computer simulations and hardware tests based on digital signal processor (TMS320C50) are presented in this thesis.

一、緒論-----------------------------------------------1
1.1 前言------------------------------------------1
1.2 大綱------------------------------------------4
二、數位信號處理器TMS320C50的原理與應用----------------5
2.1前言------------------------------------------5
2.2.1TMS320C50晶片之介紹---------------------------5
2.2.2TMS320C50晶片功能介紹-------------------------6
2.3CSDK-50控制板系統簡介-------------------------7
2.4週邊電路--------------------------------------10
2.4.1記憶體結構------------------------------------10
2.4.2控制單元--------------------------------------11
2.4.3中斷------------------------------------------13
2.4.4計時器----------------------------------------15
2.4.5D/A 轉換器------------------------------------15
2.4.6A/D 轉換器------------------------------------16
2.4.7可程式規劃脈波寬度調變PWM輸出介面-------------17
三、感應馬達的數學模型----------------------------19
3.1前 言-----------------------------------------19
3.2感應馬達數學模型之座標軸轉換------------------19
3.3感應馬達之數學模式----------------------------26
3.3.1感應馬達之三相座標軸數學模式------------------26
3.3.2感應馬達之d-q軸數學模式-----------------------29
3.4用Matlab-Simulink來建構感應馬達---------------31
3.5感應電動機的控制理論--------------------------34
3.5.1V/F 控制--------------------------------------35
3.5.2向量控制--------------------------------------36
四、多階變頻器的電路架構--------------------------38
4.1階數的定義------------------------------------40
4.2多階變頻器的種類------------------------------41
4.2.1二極體箝制變頻器------------------------------41
4.2.2隔離式H-Bridge變頻器--------------------------45
4.2.3The Flying Capacitor Inverter-----------------48
4.3多階變頻器的脤波寬度調變----------------------51
4.3.1電壓空間向量波寬調變(SVM)-------------------51
4.3.2垂直平移載波PWM-------------------------------54
4.3.3水平相移載波PWM-------------------------------54
五、五階脈波寬度調變變頻器控制馬達的電路架構------56
5.1整個系統的架構--------------------------------56
5.2主電路----------------------------------------57
5.3變頻器的調變方式------------------------------57
5.4休時電路--------------------------------------58
5.5閘級驅動電路----------------------------------60
5-6直流電源電路----------------------------------61
5-7V/F 控制--------------------------------------62
5-8軟體規劃--------------------------------------63
六、模擬與實驗------------------------------------64
6.1模擬------------------------------------------64
6.1.1模擬當負載轉矩TL=0,命令轉速W*=1800RPM時,其步階響應---------------------------------------------------------65
6.1.2模擬命令轉速W*=1800RPM,負載轉矩由TL=1牛頓-米,1秒變為2牛頓-米時---------------------------------------------72
6.1.3模擬感應馬達正反轉模擬,命令轉速W*由0到1800RPM再至-1800RPM最後到0,負載轉矩TL=0牛頓-米--------------------75
6.1.4模擬當SPWM的最大調變指數Mmax=1.2,即為過調變時,此時負載轉矩TL=2牛頓-米,命令轉速W*=1800RPM時,其步階響應----78
6.2模擬分析--------------------------------------82
6.3實驗結果--------------------------------------83
七、結論------------------------------------------85
參考文獻----------------------------------------------86
附錄一----------------------------------------------89
附錄二----------------------------------------------94
自傳----------------------------------------------95

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