本文選題：無刷勵(lì)磁同步電機(jī)　切入點(diǎn)：起動(dòng)/發(fā)電一體化系統(tǒng)　出處：《南京航空航天大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：變頻交流電源系統(tǒng)已成為當(dāng)今大型民用飛機(jī)電源系統(tǒng)主流方案，基于無刷勵(lì)磁同步電機(jī)的起動(dòng)/發(fā)電一體化系統(tǒng)作為其重要技術(shù)特征而倍受關(guān)注。無刷勵(lì)磁同步電機(jī)采用矢量控制策略起動(dòng)運(yùn)行時(shí)需要獲取準(zhǔn)確的轉(zhuǎn)子位置信息，，傳統(tǒng)機(jī)械式位置傳感器存在諸多弊端。因此，無位置傳感器控制技術(shù)應(yīng)運(yùn)而生，并開始成為無刷勵(lì)磁同步電機(jī)起動(dòng)控制領(lǐng)域的重要研究方向。 當(dāng)前無位置傳感器控制技術(shù)的難點(diǎn)主要在于零速和低速的控制，通常采用高頻信號(hào)注入法進(jìn)行轉(zhuǎn)子初始位置檢測(cè)時(shí)存在磁極位置判斷錯(cuò)誤的可能，需要借助一定的方法進(jìn)行修正。無刷勵(lì)磁同步電機(jī)因其結(jié)構(gòu)的特殊性，傳統(tǒng)的初始位置檢測(cè)方法并不適用。因此，本文提出一種采用旋轉(zhuǎn)高頻電壓注入法與感應(yīng)電勢(shì)極性判定法相結(jié)合的轉(zhuǎn)子初始位置檢測(cè)方法，采用旋轉(zhuǎn)高頻電壓注入法作為零速、低速階段位置檢測(cè)的方法，通過感應(yīng)電勢(shì)極性判定確定轉(zhuǎn)子初始位置，在中高速階段采用反電勢(shì)觀測(cè)位置估計(jì)法，并設(shè)計(jì)從低速到中高速階段切換的無位置傳感器混合控制策略，實(shí)現(xiàn)無刷勵(lì)磁同步電機(jī)起動(dòng)全過程的無位置傳感器起動(dòng)控制。 本文首先介紹了無刷勵(lì)磁同步電機(jī)的結(jié)構(gòu)與數(shù)學(xué)模型，分析無刷勵(lì)磁同步電機(jī)無位置傳感器起動(dòng)原理，詳細(xì)給出感應(yīng)電勢(shì)極性判定初始位置檢測(cè)、低速運(yùn)行階段位置檢測(cè)、中高速運(yùn)行階段位置檢測(cè)以及切換控制的工作原理，并利用Matlab仿真軟件搭建了無刷勵(lì)磁同步電機(jī)無位置傳感器起動(dòng)系統(tǒng)的仿真模型，對(duì)其進(jìn)行仿真研究，驗(yàn)證理論分析的正確性。最后，設(shè)計(jì)并制作一套基于DSP和CPLD的無刷勵(lì)磁同步電機(jī)無位置傳感器控制系統(tǒng)實(shí)驗(yàn)平臺(tái)，進(jìn)行起動(dòng)全過程的控制實(shí)驗(yàn)研究。研究結(jié)果表明該無位置傳感器控制方法能夠獲得良好的轉(zhuǎn)子位置檢測(cè)效果，實(shí)現(xiàn)無刷勵(lì)磁同步電機(jī)的無位置傳感器起動(dòng)功能。
[Abstract]:Frequency conversion AC power supply system has become the mainstream scheme of large civil aircraft power system. As an important feature of brushless excitation synchronous motor, the integrated system of starting and generating power has attracted much attention. The accurate information of rotor position needs to be obtained when the brushless excitation synchronous motor starts with vector control strategy. The traditional mechanical position sensor has many disadvantages. Therefore, the position sensorless control technology has emerged as the times require, and has become an important research direction in the field of brushless excitation synchronous motor starting control. At present, the difficulty of sensorless control lies in the control of zero speed and low speed. It is usually possible to use high frequency signal injection method to detect the initial position of rotor. The traditional initial position detection method is not suitable for brushless excitation synchronous motor because of its special structure. In this paper, a rotor initial position detection method based on rotating high frequency voltage injection method and inductive potential polarity determination method is proposed. The rotating high frequency voltage injection method is used as the zero speed and low speed position detection method. The initial position of rotor is determined by determining the polarity of inductive potential, and the position estimation method of reverse EMF observation is adopted in the middle and high speed stage, and a hybrid control strategy without position sensor is designed to switch from low speed to medium high speed. The sensorless starting control of brushless excitation synchronous motor is realized. In this paper, the structure and mathematical model of brushless excitation synchronous motor are introduced, the starting principle of sensorless brushless synchronous motor is analyzed, and the initial position detection of induction potential polarity determination and position detection in low speed operation stage are given in detail. The working principle of position detection and switching control in middle and high speed operation phase is studied. The simulation model of sensorless starting system of brushless excitation synchronous motor is built by using Matlab simulation software, and the simulation research is carried out. Finally, an experimental platform of sensorless control system for brushless excitation synchronous motor based on DSP and CPLD is designed and fabricated. The results show that the sensorless control method can obtain good rotor position detection effect and realize the sensorless starting function of brushless excitation synchronous motor.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM341;TM301.2

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