永磁同步電動(dòng)機(jī)直接轉(zhuǎn)矩控制系統(tǒng)畢業(yè)設(shè)計(jì)



摘 要

直接轉(zhuǎn)矩控制(DTC)，又稱為轉(zhuǎn)矩矢量控制(TVC)，是80年代發(fā)展起來(lái)的一種新型的異步電機(jī)控制方案，這種方案系統(tǒng)結(jié)構(gòu)簡(jiǎn)單，轉(zhuǎn)矩響應(yīng)好，其控制思想已經(jīng)推廣用于永磁同步電動(dòng)機(jī)的控制，本文就永磁同步電動(dòng)機(jī)的直接轉(zhuǎn)矩控制方案進(jìn)行探討和著重介紹。

永磁同步電動(dòng)機(jī)(以下簡(jiǎn)稱PSWM)具有功率密度大、效率高、轉(zhuǎn)子損耗小、可靠性高、動(dòng)態(tài)性能優(yōu)良等優(yōu)點(diǎn)[1],有著廣闊的發(fā)展和應(yīng)用前景。作為高性能的控制方案,直接轉(zhuǎn)矩控制(以下簡(jiǎn)稱DTC)已在感應(yīng)電機(jī)上得到比較成熟的應(yīng)用[2],將其控制思想應(yīng)用于,也同樣可以得到良好的動(dòng)態(tài)性能[3]。由于實(shí)驗(yàn)中常遇到因電機(jī)電流過(guò)流和觸發(fā)脈沖狀態(tài)不定等問(wèn)題,處理不當(dāng)就會(huì)導(dǎo)致逆變器橋臂直通而燒毀功率模塊和電機(jī)。本文開(kāi)發(fā)了一套永磁同步電動(dòng)機(jī)直接轉(zhuǎn)矩控制系統(tǒng),在此系統(tǒng)上進(jìn)行了實(shí)驗(yàn)研究。實(shí)驗(yàn)證明硬件設(shè)計(jì)方案可行,實(shí)驗(yàn)結(jié)果表明永磁同步電動(dòng)機(jī)直接轉(zhuǎn)矩控制同樣具有優(yōu)良的動(dòng)態(tài)響應(yīng)性能和對(duì)系統(tǒng)參數(shù)攝動(dòng)，外干擾具有很強(qiáng)的魯棒性等優(yōu)點(diǎn)

關(guān)鍵詞:永磁機(jī)，直同步電動(dòng)接轉(zhuǎn)矩控制，控制系統(tǒng)

                            

                            

                            

                            

                            

                            

                            

Study of Direct Torque Control of Permanent Magnet Synchronous Motor

Abstract

Direct Torque Control (DTC) technique, which is also called Torque Vector Control (T VC), is a new control scheme for induction motor drives recent years. The control system is very simple of a good dynamic performance and the control scheme has been extended to Permanent Magnet Synchronous Motors(PMSM) Several control schemes of direct torque control for PMSM drives and estimation technique of flux linkage and torque.

   Permanent magnet synchronous motor (hereinafter referred to as PSWM) has a power density, high efficiency, rotor loss, high reliability, excellent dynamic performance advantages [1], have broad prospects for development and application. As a high-performance control programmer, direct torque control (hereinafter referred to as DTC) has been more mature application in induction motor [2], to control thought it applied, can also be good dynamic properties [3]. As often encountered in experimental electric current flows and trigger status indeterminate problems, improper handling can result in express and burnt for inverter bridge legs power module and motor. This article has developed a set of permanent magnet synchronous motor direct torque control system, a experimental study on this system. Experimental proof hardware design scheme feasible experiment results show that the direct torque control of permanent magnet synchronous motor also has excellent dynamic performance and parameter perturbation to the system, outside interference and highly robust, and other advantages.

Key words: PSWM, DTC, Control System


 




目 錄

     

摘    要 I

Abstract II

一、緒論 1

二、系統(tǒng)設(shè)計(jì) 2

2.1 永磁同步電動(dòng)機(jī)的數(shù)學(xué)模型….....…………………………………………………......2

2.2 永磁同步電機(jī)的DTC機(jī)理..........………………………………………………………….…..3

2.3 永磁同步電動(dòng)機(jī)的磁鏈和轉(zhuǎn)矩控制………………………………………………4

2.4 永磁同步電動(dòng)機(jī)DTC系統(tǒng)設(shè)計(jì)…………………………………………………...4

2.4.1  3.3v和5v接口電路…………………………………………………………….4

2.4.2  故障檢測(cè)與保護(hù)………………………………………………………………...5

2.4.2.1 過(guò)流檢測(cè)與保護(hù)………………………………………………………………..5

2.4.2.2  IPM保護(hù)………………………………………………………………………6

2.4.2.3 二階Butterworth濾波電路的設(shè)計(jì)…………………………………………….6

2.5 實(shí)驗(yàn)結(jié)果

三、結(jié)論 10

致謝 11

參考文獻(xiàn): 12