本文關(guān)鍵詞：高速爪極永磁同步電機驅(qū)動系統(tǒng)設(shè)計　出處：《沈陽工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 高速爪極永磁電動機 滑模觀測器 高頻注入法 控制切換開關(guān) DTC-SVM控制系統(tǒng)

【摘要】：隨著社會生產(chǎn)力的提高,對生產(chǎn)水平的要求也不斷提高。電機的種類迅速增多,其控制技術(shù)也正迅速發(fā)展。永磁同步電動機在眾多電機中以其體積小、能量效率高、轉(zhuǎn)矩脈動小、噪聲低等諸多優(yōu)點引起了廣泛關(guān)注,尤其在高速領(lǐng)域諸如壓縮機、高速銑床、水泵等對永磁同步電機的需求日益增高。高速電機由于在高頻下工作,以往的帶有傳統(tǒng)機械式傳感器的反饋方式不再適用,且其產(chǎn)生的高次諧波對定子損耗,轉(zhuǎn)子損耗以及轉(zhuǎn)矩脈動均有較大危害,對無傳感器控制技術(shù)提出了極大需求。因此,針對高速爪極永磁同步電機的特殊性,本文在綜合考慮高速永磁爪極電機在高速及低速情況下的控制要求對高速爪極永磁同步電機驅(qū)動系統(tǒng)進(jìn)行了設(shè)計,并在Matlab/Simulink上進(jìn)行仿真分析。首先針對幾種高速永磁爪極電機的特性確定了其具有永磁電機啟動困難及高速情況下需要較好的動態(tài)特性等特點,在此基礎(chǔ)上設(shè)計了高速永磁爪極同步電機的數(shù)學(xué)模型。其次考慮高速電機主要工作在高速域情況下,設(shè)計結(jié)合滑模觀測器的DTC-SVM控制系統(tǒng),保證電機在高速域情況下有較好穩(wěn)定性且有較好的動態(tài)特性。再次,針對高速電機在中高速情況下,對傳統(tǒng)滑模觀測器進(jìn)行改進(jìn),加入定子電阻在線辨識環(huán)節(jié),使電機運行過程中定子電阻的變化對電機控制系統(tǒng)的影響最小,并引入鎖相環(huán)環(huán)節(jié),使其對反電動勢的估計更為準(zhǔn)確。在低速域情況下,考慮電機轉(zhuǎn)子位置確定的困難,引入帶有矢量變換的高頻脈振注入法以實現(xiàn)電機的自啟動。最后,結(jié)合以上設(shè)計內(nèi)容,設(shè)計兩種位置估計方法的切換模塊,設(shè)計出一種包含高頻脈振注入法和滑模觀測法的復(fù)合控制方法,使電機在低速域和中高速速域下能夠平滑過渡。并在MATLAB/SIMULINK中進(jìn)行仿真,經(jīng)仿真分析本文所設(shè)計的控制器具有較好的控制特性。
[Abstract]:With the improvement of social productivity, the level of production requirements are also rising. The type of motor increased rapidly and its control technology is developing rapidly. The permanent magnet synchronous motor in many motor with its small volume, high energy efficiency, small torque ripple and low noise advantages has aroused widespread concern, especially in the fields such as high speed high speed milling machine, compressor, pump and increasing the permanent magnet synchronous motor. High speed motor due to work in high frequency, the feedback mode with traditional mechanical sensors in the past is no longer applicable, and the harmonics of stator loss, rotor loss and torque ripple have great harm, the sensorless control technology put forward greatly the demand for high speed. Therefore, the particularity of claw pole permanent magnet synchronous motor, based on the comprehensive consideration of the high speed permanent magnet claw pole motor in high speed and low speed control case System requirements for high-speed claw pole permanent magnet synchronous motor drive system is designed, and simulation analysis is carried out on the Matlab/Simulink. Firstly, several characteristics of high speed permanent magnet claw pole motor with high speed and difficult to determine the situation need better dynamic characteristics the characteristics of permanent magnet motor, was designed based on the mathematical model of high speed the claw pole permanent magnet synchronous motor. Secondly considering the main work of high speed motor in high speed domain case, combined with the design of sliding mode observer DTC-SVM control system, to ensure that the motor has better stability and better dynamic characteristics in high speed domain case. Again, for high speed motor in high speed condition, the traditional sliding mode observer is improved and join the stator resistance on-line identification link, so that the stator resistance change in the process of motor running effect of the motor control system is minimum, and the introduction of the lock ring section The estimation of back EMF is more accurate. In case of a low velocity region, considering the difficulty of determining the rotor position, since the launch of introducing high frequency pulsating with vector transform to realize motor injection method. Finally, combining the above design content, design two kinds of position estimation method of switching module, design a composite control a method includes high frequency pulsating injection method and the sliding mode observation method, the motor can be a smooth transition in the low speed high speed domain domain. And simulation is carried out in MATLAB/SIMULINK, the simulation analysis of the designed controller has better control characteristics.

【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

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