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  本文關(guān)鍵詞： 雙饋電機(jī) 定子磁鏈定向 矢量控制 MRAS 高頻注入　出處：《中國礦業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著交流傳動技術(shù)的不斷發(fā)展,雙饋電機(jī)無速度傳感器調(diào)速系統(tǒng)在一些高電壓、大功率應(yīng)用場合優(yōu)勢明顯,具有快速動態(tài)響應(yīng)、低諧波污染、高效能等特點,并且裝置簡單、可靠性好、變頻器功率較小,對其進(jìn)行詳細(xì)研究具有重要的理論價值及實際指導(dǎo)意義。本文在查閱了大量文獻(xiàn)書籍的基礎(chǔ)上,將雙饋電機(jī)控制系統(tǒng)發(fā)展現(xiàn)狀以及無速度傳感器控制現(xiàn)狀進(jìn)行了詳細(xì)闡述,得到無速度傳感器的優(yōu)勢:引入無速度傳感器控制提高了雙饋電機(jī)控制系統(tǒng)可靠性及環(huán)境適應(yīng)性,擴(kuò)大了雙饋電機(jī)調(diào)速系統(tǒng)應(yīng)用范圍。在研究雙饋電機(jī)無速度傳感器控制系統(tǒng)之前,首先對電機(jī)數(shù)學(xué)模型進(jìn)行了詳細(xì)的闡述,給出雙饋電機(jī)在三相靜止坐標(biāo)系和兩相同步旋轉(zhuǎn)坐標(biāo)系下的數(shù)學(xué)模型,詳述了雙饋電機(jī)的調(diào)速原理及各種運行狀況,為后文的深入研究打下基礎(chǔ)。在雙饋電機(jī)數(shù)學(xué)模型基礎(chǔ)上,對各種定向矢量做了對比,選取了相對較優(yōu)的定子磁鏈定向方案,并通過理論分析,得到一個可以消除積分漂移的磁鏈觀測器模型。然后推導(dǎo)了基于定子磁鏈定向的雙饋電機(jī)矢量控制方程,并進(jìn)行了仿真實驗驗證,證明了所提出的控制策略的有效性。最后,針對無速度傳感器控制中電機(jī)轉(zhuǎn)速觀測,采用了基于定子磁鏈定向的模型參考自適應(yīng)(MRAS)方法和基于轉(zhuǎn)子高頻信號注入的無速度傳感器控制方法。前者基于電機(jī)的數(shù)學(xué)模型構(gòu)建了電壓參考模型和電流可變模型,基于Popov超穩(wěn)定理論推導(dǎo)設(shè)計自適應(yīng)律,并進(jìn)行了仿真實驗驗證,在電機(jī)中、高速運行時具有很好的轉(zhuǎn)速觀測效果,取得了較好的動、靜態(tài)性能。后者針對雙饋電機(jī)在低速運行時轉(zhuǎn)速觀測而提出的,在轉(zhuǎn)子側(cè)注入高頻信號,然后從定子側(cè)提取包含轉(zhuǎn)速信息的高頻信號,經(jīng)過解調(diào)后得到電機(jī)轉(zhuǎn)速,并通過仿真實驗驗證了該方法的有效性。
[Abstract]:With the development of AC transmission technology, the speed sensorless speed regulating system of doubly-fed machine has obvious advantages in some high voltage and high power applications. It has the characteristics of fast dynamic response, low harmonic pollution, high efficiency and so on. And the device is simple, the reliability is good, the frequency converter power is small, it has the important theory value and the practical guiding significance to carry on the detailed research to it. The development status of doubly-fed motor control system and the current situation of sensorless speed control are described in detail. The advantages of speed sensorless control are obtained: speed sensorless control is introduced to improve the reliability and environmental adaptability of doubly-fed motor control system. Before studying the speed sensorless control system of doubly-fed motor, the mathematical model of the motor is described in detail. The mathematical models of double-fed machine in three-phase stationary coordinate system and two-phase synchronous rotating coordinate system are given. The principle of speed regulation and various operating conditions of double-fed machine are described in detail. On the basis of mathematical model of doubly-fed machine, various orientation vectors are compared, and a relatively optimal stator flux orientation scheme is selected, and theoretical analysis is carried out. A flux observer model which can eliminate the integral drift is obtained. Then the vector control equation based on stator flux orientation is derived and verified by simulation experiments. The effectiveness of the proposed control strategy is proved. Finally, the speed observation of the motor in sensorless control is discussed. A model reference adaptive control system based on stator flux orientation is proposed. Methods the voltage reference model and the current variable model are constructed based on the mathematical model of the motor and the speed sensorless control method based on the high frequency signal injection of the rotor. The adaptive law is deduced and designed based on the Popov superstability theory, and the simulation results show that in the motor, the speed observation effect is very good when running at high speed, and good motion is achieved. Static performance. The latter is proposed to measure the speed of the double-fed machine at low speed. High frequency signals are injected into the rotor side, and then the high frequency signals containing the speed information are extracted from the stator side. The motor speed is obtained by demodulation, and the effectiveness of the method is verified by simulation experiments.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM301.2

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本文編號：1469346