同步電機(jī)模型的MATLAB仿真

電子通信論文編號:TX032        論文字?jǐn)?shù):8408,頁數(shù):27

目  錄
第1章 引言   1
1.1 引言   1
1.2 同步電機(jī)概述   1
1.3 系統(tǒng)仿真技術(shù)概述   2
1.4 仿真軟件的發(fā)展?fàn)顩r與應(yīng)用   2
1.5 MATLAB概述   2
1.6 Simulink概述  4
1.7 小結(jié)  5
第2章 同步電機(jī)基本原理   6
2.1 理想同步電機(jī)   6
2.2 abc/dq模型的建立  6
第3章 仿真系統(tǒng)總體設(shè)計(jì)   10
3.1 系統(tǒng)對象   10
3.2 系統(tǒng)分塊  10
3.3 控制反饋環(huán)節(jié)   11
第4章 仿真系統(tǒng)詳細(xì)設(shè)計(jì)   13
4.1 總體設(shè)計(jì)  13
4.2 具體設(shè)計(jì)  13
4.3 控制反饋環(huán)節(jié)   16
第5章 系統(tǒng)仿真運(yùn)行   17
5.1 輸出結(jié)果穩(wěn)定情況   17
5.2 小結(jié)  20
第6章 結(jié)論  21
第7章 致謝   22
參考文獻(xiàn)   23

摘要
采用電力電子變頻裝置實(shí)現(xiàn)電壓頻率協(xié)調(diào)控制，改變了同步電機(jī)歷來的恒速運(yùn)行不能調(diào)速的面貌，使它和異步電機(jī)一樣成為調(diào)速電機(jī)大家庭的一員。本文針對同步電機(jī)中具有代表性的凸極機(jī)，在忽略了一部分對誤差影響較小而使算法復(fù)雜度大大增加的因素（如諧波磁勢等），對其內(nèi)部電流、電壓、磁通、磁鏈及轉(zhuǎn)矩的相互關(guān)系進(jìn)行了一系列定量分析，建立了簡化的基于abc三相變量上的數(shù)學(xué)模型，并將其進(jìn)行派克變換，轉(zhuǎn)換成易于計(jì)算機(jī)控制的d/q坐標(biāo)下的模型。再使用MATLAB中用于仿真模擬系統(tǒng)的SIMULINK對系統(tǒng)的各個部分進(jìn)行封裝及連接，系統(tǒng)總體分為電源、abc/dq轉(zhuǎn)換器、電機(jī)內(nèi)部模擬、控制反饋四個主要部分，并為其設(shè)計(jì)了專用的模塊，同時對其中的一系列參數(shù)進(jìn)行了配置。系統(tǒng)啟動仿真后，在經(jīng)歷了一開始的振蕩后，各輸出相對于輸出時間的響應(yīng)較穩(wěn)定。
關(guān)鍵詞：同步電機(jī)  d/q模型  MATLAB  SIMULINK  仿真。

Abstract:
The utilization of transducer realizes the control of voltage’s frequency. It changes the situation that Synchronous Machine is always running with constant speed. Just like Asynchronous Machine, Synchronous machine can also be viewed as a member of the timing machine. This thesis intends to aim at the typical salient pole machine in Synchronous Machine. Some quantitative analysis are made on relations of salient pole machine among current, voltage, flux, flux linkage and torque, under the condition that some factors such as harmonic electric potential are ignored. These factors have less influence on error but greatly increase complexity of arithmetic. Thus, simplified mathematic model is established on the basis of a, b, c three phase variables. By the Park transformation, this model is transformed to d, q model which, is easy to be controlled by computer. Simulink is used to masking and linking all the parts of the system. The system can be divided into four main parts, namely power system, abc/dq transformation, simulation model of the machine and feedback control. Special blocks are designed for the four parts and a series of parameters in these parts are configured. The results of simulation show that each output has a satisfactory response when there is disturbance.

Key Words: Synchronous Machine  Simulation  d/q Model  MATLAB  SIMULINK