本文選題：永磁同步電機(jī) + 無(wú)傳感器控制��； 參考：《東北大學(xué)》2014年碩士論文

【摘要】：近年來(lái),永磁同步電動(dòng)機(jī)(Permanent Magnet Synchronous Motor, PMSM)以其體積小、損耗低、效率高等優(yōu)異性能在大功率傳動(dòng)領(lǐng)域得到了廣泛的應(yīng)用,永磁同步電動(dòng)機(jī)的精確控制需要轉(zhuǎn)子的位置信息,最常用的方法是在轉(zhuǎn)子軸上安裝位置傳感器來(lái)測(cè)量電機(jī)轉(zhuǎn)子的轉(zhuǎn)速和位置信息。但是高精度、高分辨率的速度和位置傳感器通常價(jià)格比較昂貴,這樣不僅增加了整個(gè)系統(tǒng)的成本,同時(shí)還造成了接線的復(fù)雜,限制了驅(qū)動(dòng)裝置在惡劣環(huán)境下的應(yīng)用。因此,研究永磁同步電機(jī)的無(wú)位置傳感器技術(shù)具有重要的現(xiàn)實(shí)意義,它主要依據(jù)電機(jī)的數(shù)學(xué)方程間接估算轉(zhuǎn)速和轉(zhuǎn)子位置。其中,脈振高頻電壓信號(hào)注入法的系統(tǒng)結(jié)構(gòu)實(shí)現(xiàn)相對(duì)比較簡(jiǎn)單,而且無(wú)需大量的坐標(biāo)運(yùn)算和數(shù)字濾波器。本文分析了脈振高頻電壓信號(hào)注入法的基本原理,建立了在高頻信號(hào)激勵(lì)下的內(nèi)埋式永磁同步電機(jī)的數(shù)學(xué)模型。研究了基于脈振高頻電壓注入法的控制策略,采用脈振高頻電壓信號(hào)注入法估算PMSM的轉(zhuǎn)子位置信息,利用電動(dòng)機(jī)繞組所產(chǎn)生的相關(guān)電信號(hào),通過(guò)設(shè)計(jì)的PⅡ控制算法估計(jì)出轉(zhuǎn)子的速度和位置信息,設(shè)計(jì)了轉(zhuǎn)子極性判斷部分用以區(qū)分轉(zhuǎn)子的N、S極,可以實(shí)現(xiàn)位置的準(zhǔn)確估計(jì)。建立了基于脈振高頻電壓注入法的PMSM無(wú)傳感器矢量控制系統(tǒng)仿真模型,對(duì)轉(zhuǎn)子位置估計(jì)值與實(shí)際值、轉(zhuǎn)子位置估計(jì)誤差以及轉(zhuǎn)速估計(jì)值與實(shí)際值進(jìn)行了比較仿真實(shí)驗(yàn),實(shí)驗(yàn)結(jié)果表明,脈振高頻電壓信號(hào)注入法能夠在全速度范圍內(nèi)準(zhǔn)確檢測(cè)出轉(zhuǎn)子的位置,同時(shí)使系統(tǒng)具有較好的靜、動(dòng)態(tài)響應(yīng)特性。開(kāi)發(fā)了以DSP為控制核心的PMSM無(wú)位置傳感器矢量控制系統(tǒng)的實(shí)驗(yàn)平臺(tái),分別進(jìn)行了軟硬件設(shè)計(jì),實(shí)現(xiàn)了永磁同步電機(jī)調(diào)速系統(tǒng)的無(wú)傳感器運(yùn)行。對(duì)控制系統(tǒng)進(jìn)行了實(shí)驗(yàn)驗(yàn)證。實(shí)驗(yàn)結(jié)果表明,基于脈振高頻電壓信號(hào)注入的轉(zhuǎn)子位置自檢測(cè)方法可以實(shí)現(xiàn)無(wú)位置傳感器運(yùn)行,而且對(duì)電動(dòng)機(jī)參數(shù)的變化不敏感,對(duì)外界的干擾也具有很好的魯棒性。
[Abstract]:In recent years, permanent Magnet Synchronous Motor, PMSM) (permanent magnet synchronous motor) has been widely used in the field of high-power transmission because of its small size, low loss and high efficiency. The precise control of permanent magnet synchronous motor needs rotor position information. The most commonly used method is to install a position sensor on the rotor shaft to measure the rotor speed and position information. However, high precision and high resolution speed and position sensors are usually more expensive, which not only increases the cost of the whole system, but also leads to the complexity of the connection, which limits the application of the drive device in the harsh environment. Therefore, it is of great practical significance to study the sensorless technology of permanent magnet synchronous motor (PMSM), which estimates the rotational speed and rotor position indirectly according to the mathematical equations of the PMSM. Among them, the system structure of pulse high frequency voltage signal injection method is relatively simple, and there is no need for a large number of coordinate operation and digital filter. In this paper, the basic principle of pulse vibration high frequency voltage signal injection method is analyzed, and the mathematical model of embedded permanent magnet synchronous motor excited by high frequency signal is established. The control strategy based on high frequency voltage injection method of pulse vibration is studied. The rotor position information of PMSM is estimated by the high frequency voltage signal injection method of pulse vibration, and the related electrical signals generated by motor windings are used. The speed and position information of the rotor are estimated by the designed P 鈪，

本文編號(hào)：1850662