【正文】 elative is low. In the countryside and the remote districts the wind power generation is good application prospect. The main work of the thesis is as follow. This paper mainly studies the system of low speed PM generator direct driven by wind turbine. In theoretically, according to the wind power generation system mathematical model, the dynamic performance of the power generation system for different operation modes is simulated based on Matlab/Simulink. The output of the system of PM generator direct driven by wind turbine is variable voltage and variable frequency power. To get constant voltage and constant frequency energy that users need, the software and hardware of the inverter control system is designed. The inverter controller is adopted PIC singlechipputer and PWM chip SA4828, and IPM as inverter, LC wave filter. The voltage feedback is got through the chip AD736 which acplishes the task of sampling the voltage. To realize the reliable operation the wind power generation system, the software and hardware of the pitch and yaw control system designed. The controller uses PIC singlechip puter as central controller, which operates the system through measuring the wind speed, rotational speed, battery voltage and the charging current, etc. At the same time in order to strengthen the antiinterference performance of the controller, the input and output are isolated by the photoelectricity. 沈陽工業(yè)大學碩士學位論文 2 The paper introduces the system simulation and software and hardware design in detail, and produces the simulation and the test result. Key Words： wind power generation, permanent mag direct drive, pitch control, inverter 沈陽工業(yè)大學碩士學位論文 3 學位論文原創(chuàng)性聲明 本人鄭重聲明：所呈交的論文是本人在導師的指導下獨立進行研究所取得的研究成果。調(diào)節(jié)方式采用了增量式 PID控制，同時為避免干擾采用了 防脈沖干擾平均值濾波 。 永磁直驅(qū)風力發(fā)電系統(tǒng)與傳統(tǒng)的以異步電機的發(fā)電系統(tǒng)相比，不需經(jīng)常維護，結構簡單 ， 發(fā)電效率較高，總體成本相對較低，這些優(yōu)點使得可獨立運行的中小型永磁直驅(qū)風力發(fā)電系統(tǒng)在農(nóng)村和偏遠地區(qū)有著很好應用前景。 本文主要 工作如下： 本文主要研究中小型永磁直驅(qū)風力發(fā)電控制系統(tǒng)，在理論上 ， 根據(jù)中小型永磁直驅(qū)風力發(fā)電系統(tǒng)的數(shù)學模型 ，完成了基于 Matlab/Simulink 的仿真，該仿真包括變槳距控制系統(tǒng)的仿真和交直交變流系統(tǒng)的負載突變的仿真兩部分 。 變槳距及偏航控制系統(tǒng) 為風力發(fā)電 系統(tǒng) 可靠運行 的關鍵 ，本文進行了 變槳距及偏航控制系統(tǒng) 的軟硬件設計。除了文中特別加以標注引用的內(nèi)容外，本論文不包含任何其他個人或集體已經(jīng)發(fā)表或撰寫的成果作品。本人授權 大學可以將本學位論文的全部或部分內(nèi)容編入有關數(shù)據(jù)庫進行檢索，可以采用影印、縮印或掃描等復制手段保存和匯編本學位論文 。對本文的研究做出重要貢獻的個人和集體均已在文中以明確方式標明。 （保密論文在解密后遵守此規(guī)定） 作者簽名 : 二〇 一 〇年 九 月 二十 日 沈陽工業(yè)大學碩士學位論文 5 目 錄 摘 要 ........................................................................................................................ 1 Abstract........................................................................................................................... 1 1 緒論 ............................................................................................................................. 1 課題背景 ............................................................................................................ 1 風力發(fā)電的研究現(xiàn)狀 ........................................................................................ 2 恒速恒頻恒與變速恒頻風力發(fā)電系統(tǒng) .................................................... 2 功率調(diào)節(jié) .................................................................................................. 5 永磁直驅(qū)風力發(fā)電趨勢 ..................................................................................... 7 課題的來源和研究內(nèi)容 ..................................................................................... 8 2 中小功率永磁直驅(qū)風力發(fā)電控制系統(tǒng)的設計和仿 真 ................................................ 9 風力發(fā)電控制系統(tǒng)的結構原理 ......................................................................... 9 風力機的功率特性 .......................................................................................... 10 永磁同步發(fā)電機的模型 ................................................................................... 11 控制策略 .......................................................................................................... 11 風力發(fā)電系統(tǒng)模型的建立 ............................................................................... 12 仿真結果 .......................................................................................................... 15 本章小結 .......................................................................................................... 18 3 逆變控制系統(tǒng)的硬件系統(tǒng)設計 ................................................................................. 19 逆變控制系統(tǒng)的結構 ...................................................................................... 19 SA4828 簡介 .................................................................................................... 20 SA4828 的功能特點 .............................................................................. 20 SA4828 芯片的工作原理 ....................................................................... 21 SA4828 初始化寄存器的參數(shù)設定 ....................................................... 22 沈陽工業(yè)大學碩士學位論文 6 控制寄存器的參數(shù)設定 ......................................................................... 23 參數(shù)計算 ................................................................................................ 24 IPM 驅(qū)動電路的設計 ...................................................................................... 25 電壓采樣電路的設計 ...................................................................................... 26 A/D轉(zhuǎn)換 .......................................................................................................... 29 濾波器設計 ..................................................................................................... 30 本章小結 .......................................................................................................... 31 4 逆變控制系統(tǒng)軟件設計 ............................................................................................ 32 SPWM 控制技術 ............................................................................................. 32 PWM 調(diào)制法基本原理 ......................................