【摘要】：無軸承同步磁阻電機(jī)(BSRM)是一種結(jié)構(gòu)簡單、性能優(yōu)異的特種電機(jī)。BSRM不僅具有結(jié)構(gòu)簡單、體積小、轉(zhuǎn)子上無永磁體或勵(lì)磁繞組、成本低廉等同步磁阻電機(jī)的優(yōu)點(diǎn),同時(shí)還具有無摩擦、無需潤滑、無污染、壽命長等磁軸承的優(yōu)良特性。對(duì)比于其它種類的無軸承電機(jī),因?yàn)闊o軸承同步磁阻電機(jī)能夠獲得更高的轉(zhuǎn)子凸極比,容易獲得更高的轉(zhuǎn)速與更高的轉(zhuǎn)矩密度,故愈發(fā)適用于如航空航天、國防軍事等高速高新的場合或領(lǐng)域,因此無軸承同步磁阻電機(jī)具有廣闊的應(yīng)用前景與豐富的研究價(jià)值。本論文在國家自然科學(xué)基金(60974053)和江蘇省“333工程”等資助項(xiàng)目的支持下,對(duì)二自由度無軸承同步磁阻電機(jī)的基本結(jié)構(gòu)與數(shù)學(xué)模型、無速度傳感器自檢測技術(shù)、無位移傳感器自檢測技術(shù)、數(shù)字控制系統(tǒng)以及實(shí)驗(yàn)平臺(tái)進(jìn)行了詳細(xì)深入的研究與分析。論文的主要工作內(nèi)容如下:首先,詳細(xì)描述了無軸承電機(jī)的發(fā)展歷史、研究現(xiàn)狀、未來發(fā)展趨勢與應(yīng)用前景。之后,介紹了無軸承同步磁阻電機(jī)的電磁轉(zhuǎn)矩與徑向懸浮力的產(chǎn)生原理,最后根據(jù)磁路原理推導(dǎo)出無軸承同步磁阻電機(jī)的轉(zhuǎn)矩子系統(tǒng)數(shù)學(xué)模型以及依據(jù)磁場虛位移法推導(dǎo)出電機(jī)的徑向懸浮力子系統(tǒng)的數(shù)學(xué)模型。其次,介紹了鎖相環(huán)技術(shù)(PLL),并將其應(yīng)用于無軸承同步磁阻電機(jī)中,提出了一種基于鎖相環(huán)的無軸承同步磁阻電機(jī)無速度傳感器自檢測技術(shù)。在此基礎(chǔ)上設(shè)計(jì)出無軸承同步磁阻電機(jī)無速度傳感器,并搭建出電機(jī)轉(zhuǎn)速自檢測的控制系統(tǒng),最后通過仿真與實(shí)驗(yàn)研究對(duì)系統(tǒng)的可行性進(jìn)行分析驗(yàn)證。從所得出的結(jié)論可知,該系統(tǒng)確實(shí)具有準(zhǔn)確推算出電機(jī)轉(zhuǎn)子位置或角速度的能力,且控制系統(tǒng)具有良好的抗干擾能力。再次,對(duì)無軸承同步磁阻電機(jī)的電感矩陣模型進(jìn)行深入研究,并運(yùn)用Ansoft有限元分析仿真軟件驗(yàn)證之前推導(dǎo)出來的電機(jī)徑向懸浮力子系統(tǒng)數(shù)學(xué)模型的正確性。最后依據(jù)電機(jī)定子中兩套繞組的電感與轉(zhuǎn)子徑向位移之間的關(guān)系,探索出無軸承同步磁阻電機(jī)無位移傳感器自檢測的方法,搭建出電機(jī)無位移傳感器的仿真模型,并在環(huán)境中對(duì)其進(jìn)行仿真研究,驗(yàn)證該方法的正確性與可靠性。Matlab/Simulink最后,從硬件與軟件兩個(gè)部分入手對(duì)無軸承同步磁阻電機(jī)的數(shù)字控制系統(tǒng)給出詳盡的闡述,并構(gòu)建出實(shí)驗(yàn)平臺(tái),進(jìn)行相關(guān)實(shí)驗(yàn)研究分析,以驗(yàn)證實(shí)驗(yàn)平臺(tái)的可靠性。
[Abstract]:The bearingless synchronous reluctance motor (BSRM) is a kind of special motor with simple structure and excellent performance. BSRM not only has the advantages of simple structure, small volume, no permanent magnet or excitation winding on the rotor, but also low cost. At the same time also has no friction, no lubrication, no pollution, long life of magnetic bearing excellent characteristics. Compared to other types of bearingless motors, bearingless synchronous reluctance motors are more suitable for aerospace because they can achieve higher rotor salient ratios, higher rotational speeds and higher torque densities. Because of the high speed and new field such as national defense and military, the bearingless synchronous reluctance motor has broad application prospect and rich research value. Supported by the National Natural Science Foundation of China (60974053) and Jiangsu Province Project 333, the basic structure and mathematical model of a two-degree-of-freedom bearingless synchronous reluctance motor and the speed sensorless self-detection technique are studied in this paper. Displacement sensorless self-detection technology, digital control system and experimental platform are studied and analyzed in detail. The main work of this paper is as follows: firstly, the history, research status, future development trend and application prospect of bearingless motor are described in detail. Then, the principle of producing electromagnetic torque and radial suspension force of bearingless synchronous reluctance motor is introduced. Finally, according to the principle of magnetic circuit, the mathematical model of the torque subsystem of bearingless synchronous reluctance motor and the mathematical model of the radial suspension force subsystem of the motor are derived according to the magnetic field virtual displacement method. Secondly, the phase-locked loop (PLL),) technology is introduced and applied to bearingless synchronous reluctance motor. A speed sensorless self-detection technique for bearingless synchronous reluctance motor based on phase-locked loop is proposed. On this basis, a bearingless synchronous reluctance motor without speed sensor is designed, and the motor speed self-detection control system is built. Finally, the feasibility of the system is analyzed and verified by simulation and experimental research. From the conclusion, it can be seen that the system has the ability to calculate the rotor position or angular velocity accurately, and the control system has good anti-interference ability. Thirdly, the inductance matrix model of bearingless synchronous reluctance motor is deeply studied, and the correctness of the mathematical model of radial suspension force subsystem is verified by Ansoft finite element simulation software. Finally, according to the relationship between the inductance of the two sets of windings and the radial displacement of the rotor, the self-detection method of the sensorless displacement of the bearingless synchronous reluctance motor is explored, and the simulation model of the sensorless motor is built. The simulation research is carried out in the environment to verify the correctness and reliability of the method. Finally, the digital control system of bearingless synchronous reluctance motor is described in detail from two parts: hardware and software. An experimental platform was constructed to verify the reliability of the platform.
【學(xué)位授予單位】：江蘇大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TM352

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本文編號(hào)：2383287