本文關(guān)鍵詞：三相異步電動機矢量控制設(shè)計與實現(xiàn)　出處：《湖北工業(yè)大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 矢量控制 MATLAB SVPWM

【摘要】：三相異步電動機具有結(jié)構(gòu)簡單、運行可靠、重量輕、價格便宜的優(yōu)良特點,因而得到了廣泛的應(yīng)用,但其調(diào)速困難限制了異步電動機的廣泛使用。目前隨著電力電子器件的發(fā)展,交流變頻調(diào)速技術(shù)逐漸成熟,矢量控制技術(shù)經(jīng)過幾十年的不斷發(fā)展,在交流調(diào)速領(lǐng)域已被廣泛使用。本課題設(shè)計與實現(xiàn)了基于Microchip系列DSC設(shè)計三相異步電動機的矢量控制系統(tǒng)。主要內(nèi)容是根據(jù)采用矢量控制原理,以數(shù)字信號處理器dsPIC30F4011芯片為控制核心,構(gòu)建了一個基于DSP的三相異步電動機間接型矢量控制系統(tǒng)。通過坐標(biāo)變換原理將三相定子電流分解為電磁電流和轉(zhuǎn)矩電流,然后在三相異步電動機數(shù)學(xué)模型的基礎(chǔ)上,計算出轉(zhuǎn)子磁鏈,磁通角,電磁轉(zhuǎn)矩等參數(shù),再用標(biāo)準(zhǔn)的PI控制環(huán)對這些參數(shù)分別進行控制,從而實現(xiàn)了對磁通和轉(zhuǎn)矩的解耦控制。(1)研究并給出了三相異步電動機在三相靜止坐標(biāo)系下的電壓、磁鏈、轉(zhuǎn)矩方程式。應(yīng)用Clake變換和Park變換推導(dǎo)出了電動機在兩相旋轉(zhuǎn)坐標(biāo)系下的磁鏈方程、電磁轉(zhuǎn)矩方程和轉(zhuǎn)差角速度方程。另外,還研究了空間電壓矢量調(diào)制技術(shù)的原理和實現(xiàn)方法。(2)構(gòu)造了三相異步電機的矢量控制系統(tǒng)框圖,系統(tǒng)的主要組成部分有電機運行參數(shù)測量模塊,坐標(biāo)變換模塊,磁鏈觀測器模塊,轉(zhuǎn)矩觀測器模塊,PI調(diào)節(jié)器模塊,脈沖發(fā)生器模塊,逆變器模塊。然后在MATLAB中分別構(gòu)建這些模塊,連接成系統(tǒng)并仿真。從仿真結(jié)果中得到了控制系統(tǒng)的速度調(diào)節(jié)時間與穩(wěn)態(tài)誤差,以及定子三相電流的大小,轉(zhuǎn)矩的波動等。(3)以數(shù)字信號處理器dsPIC30F4011芯片為控制核心設(shè)計了控制板,整個系統(tǒng)由處理器最小系統(tǒng)電路,串口通行電路,電流信號處理電路和供電電路組成。以智能功率模塊(IPM)PS21963芯片為驅(qū)動核心設(shè)計了電動機驅(qū)動板,整個系統(tǒng)由光耦隔離電路,逆變電路,執(zhí)行供電電路組成。在Altium中繪制了原理圖,并設(shè)計與制作了PCB板,搭建了三相異步電動機調(diào)速硬件控制系統(tǒng)。
[Abstract]:Three-phase asynchronous motor has been widely used because of its simple structure, reliable operation, light weight and cheap price. With the development of power electronic devices, the technology of AC variable frequency speed regulation has matured gradually, and the vector control technology has been developing continuously for several decades. This paper designs and implements the vector control system of three-phase asynchronous motor based on Microchip series DSC. The main content is based on the original vector control. Reason. The digital signal processor (dsPIC30F4011) is used as the control core. An indirect vector control system of three-phase asynchronous motor based on DSP is constructed. The three-phase stator current is decomposed into electromagnetic current and torque current by coordinate transformation principle. Then based on the mathematical model of three-phase asynchronous motor, the rotor flux, flux angle, electromagnetic torque and other parameters are calculated, and these parameters are respectively controlled by the standard Pi control loop. Thus the decoupling control of flux and torque is realized and the voltage and flux linkage of three-phase asynchronous motor in three-phase static coordinate system are given. In this paper, the flux chain equation, electromagnetic torque equation and rotation angular velocity equation of motor in two-phase rotating coordinate system are derived by using Clake transform and Park transform. The principle and implementation method of space voltage vector modulation (SVPWM) are also studied. The vector control system block diagram of three-phase asynchronous motor is constructed. The main component of the system is the measuring module of motor operating parameters. Coordinate conversion module, flux observer module, torque observer module Pi regulator module, pulse generator module, inverter module. Then in MATLAB, these modules are constructed. From the simulation results, the speed adjustment time and steady-state error of the control system and the magnitude of the stator three-phase current are obtained. The control board is designed based on the digital signal processor (dsPIC30F4011) chip. The whole system is composed of the processor minimum system circuit and the serial port circuit. The current signal processing circuit and power supply circuit are composed. The motor drive board is designed with the intelligent power module IPMP21963 as the driving core. The whole system is composed of optocoupler isolation circuit and inverter circuit. The principle diagram is drawn in Altium, the PCB board is designed and fabricated, and the hardware control system of three-phase asynchronous motor speed regulation is built.
【學(xué)位授予單位】：湖北工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TM343.2

【參考文獻】

相關(guān)期刊論文 前7條

1 韓會山;陳龍;程德芳;;異步電機矢量控制系統(tǒng)的設(shè)計及仿真研究[J];計算機仿真;2012年02期

2 徐奔;聶赫;;異步電動機矢量控制系統(tǒng)的仿真研究[J];煤礦機電;2012年01期

3 侯盡然;李釗;;微機繼電保護狀態(tài)檢修的探討[J];供用電;2010年04期

4 徐濤;吳迎霞;張紅超;于朝輝;;繼電保護用開關(guān)電源的故障分析及改進[J];電力系統(tǒng)保護與控制;2010年10期

5 ;Maintenance and Condition-Based Maintenance[J];International Journal of Plant Engineering and Management;2005年03期

6 項世軍,謝宗安;MATLAB語言在異步電動機同步旋轉(zhuǎn)坐標(biāo)系下模型仿真研究[J];計算機仿真;2000年03期

7 董雪梅,趙萬清,楊建國,艾玲梅,申忠如;直流電源的監(jiān)測裝置[J];測試技術(shù)學(xué)報;1998年03期

相關(guān)碩士學(xué)位論文 前2條

1 劉曉放;繼電保護靜態(tài)特性監(jiān)視及隱藏故障診斷方法研究[D];重慶大學(xué);2009年

2 陳志雄;微機保護硬件平臺可靠性設(shè)計研究[D];西南交通大學(xué);2006年

，

本文編號：1414271