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  本文選題：永磁同步電機(jī) + 無位置傳感器�。� 參考：《沈陽工業(yè)大學(xué)》2017年碩士論文

【摘要】：由于永磁同步電機(jī)有著損耗小、效率高、結(jié)構(gòu)簡單等優(yōu)點(diǎn),所以其應(yīng)用面越來越廣,其中一個重要的應(yīng)用方面便是驅(qū)動電動汽車空調(diào)壓縮機(jī),但永磁電機(jī)中檢測轉(zhuǎn)子位置和速度的各種中傳感器無法安裝于電動汽車空調(diào)壓縮機(jī)系統(tǒng)中,為了克服傳感器給調(diào)速系統(tǒng)適用場合帶來的局限性,本文針對電動車空調(diào)壓縮機(jī)控制系統(tǒng)提出了基于高頻旋轉(zhuǎn)電壓注入法和模型參考自適應(yīng)的無位置傳感器控制方法。首先,本文對永磁同步電機(jī)的數(shù)學(xué)模型進(jìn)行建立,并介紹了永磁同步電機(jī)矢量控制的基本方法,對空間矢量脈寬調(diào)制方法進(jìn)行了分析,對基于SVPWM的永磁同步電機(jī)雙閉環(huán)矢量控制系統(tǒng)進(jìn)行了仿真分析。然后,在矢量控制的基礎(chǔ)上,對永磁同步電機(jī)無位置傳感器技術(shù)進(jìn)行詳細(xì)研究。針對一些永磁電機(jī)呈現(xiàn)的凸極性,提出了基于高頻旋轉(zhuǎn)電壓注入法的無位置傳感器控制系統(tǒng),設(shè)計了基于巴特沃斯濾波器和鎖相環(huán)技術(shù)的轉(zhuǎn)速觀測器。先對高頻旋轉(zhuǎn)電壓注入法原理進(jìn)行了基本的分析,然后對注入高頻電流信號的分離,負(fù)序電流的提取以及轉(zhuǎn)子位置和速度信息的獲得進(jìn)行了詳細(xì)的論述。對基于高頻旋轉(zhuǎn)電壓信號注入法的永磁同步電機(jī)無傳感器控制系統(tǒng)進(jìn)行搭建,進(jìn)行了仿真分析驗證。由實驗結(jié)果分析可得,高頻旋轉(zhuǎn)電壓注入法可以較為準(zhǔn)確的估算出電機(jī)轉(zhuǎn)子的位置與速度信息,并使系統(tǒng)有較好的穩(wěn)定性,可以應(yīng)用于電動汽車空調(diào)壓縮機(jī)中。最后,針對凸極結(jié)構(gòu)不明顯的永磁同步電機(jī),因無法精確提取高頻注入法中的高頻分量,提出了基于模型參考自適應(yīng)(MRAS)的無位置傳感器控制方法。建立了電流參考模型與可調(diào)模型,將兩模型輸出的差經(jīng)過自適應(yīng)機(jī)構(gòu)和合適的自適應(yīng)律來實時調(diào)節(jié)可調(diào)模型中的參數(shù),從而實現(xiàn)電機(jī)的轉(zhuǎn)速和位置的參數(shù)辨識,并對系統(tǒng)進(jìn)行了仿真研究和結(jié)果分析,表明基于模型參考自適應(yīng)(MRAS)的永磁同步電動機(jī)無傳感器控制方法有良好的電機(jī)參數(shù)辨識和動靜態(tài)效果。
[Abstract]:Permanent magnet synchronous motor (PMSM) has many advantages, such as low loss, high efficiency, simple structure and so on. However, in order to overcome the limitation that sensors bring to speed control system, sensors in permanent magnet motor can not be installed in air conditioning compressor system of electric vehicle. In this paper, a sensorless control method based on high frequency rotation voltage injection and model reference adaptive control is proposed for the control system of electric vehicle air conditioning compressor. Firstly, the mathematical model of permanent magnet synchronous motor (PMSM) is established, and the basic method of PMSM vector control is introduced, and the space vector pulse width modulation (SVPWM) method is analyzed. The double closed loop vector control system of permanent magnet synchronous motor based on SVPWM is simulated and analyzed. Then, on the basis of vector control, the position sensorless technology of PMSM is studied in detail. Aiming at the convex polarity of some permanent magnet motors, a sensorless position sensorless control system based on high frequency rotating voltage injection method is proposed, and a speed observer based on Butterworth filter and phase-locked loop technology is designed. The principle of high frequency rotating voltage injection method is analyzed, and then the separation of high frequency current signal, the extraction of negative sequence current and the acquisition of rotor position and velocity information are discussed in detail. The sensorless control system of permanent magnet synchronous motor (PMSM) based on high frequency rotating voltage signal injection method is built and simulated. From the analysis of the experimental results, it can be obtained that the high frequency rotating voltage injection method can accurately estimate the position and speed information of the motor rotor, and make the system have better stability, and can be applied to the electric vehicle air conditioning compressor. Finally, a sensorless control method based on model reference adaptive control (MRASA) is proposed for the permanent magnet synchronous motor (PMSM) with a salient pole structure which can not accurately extract the high-frequency components from the high-frequency injection method. The current reference model and the adjustable model are established. The output difference between the two models is adjusted by the adaptive mechanism and the appropriate adaptive law to adjust the parameters of the adjustable model in real time, so as to realize the parameter identification of the speed and position of the motor. The simulation results show that the sensorless control method of PMSM based on model reference adaptive control (MRAS) has good motor parameter identification and dynamic and static effect.
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM341;U469.72

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本文編號：1943196