發(fā)布時間：2018-08-31 10:41

【摘要】：交流調(diào)速系統(tǒng)的主要供電設備是電力變換器,而傳統(tǒng)的電力變換器一直無法克服變換器本身固有的缺陷。由于雙級矩陣變換器(Two-stage Matrix Converter, TSMC)直流側無儲能電容,節(jié)約成本的同時縮小了裝置體積,性能上可實現(xiàn)輸入輸出電流正弦、輸入功率因數(shù)可控且能量雙向流動,是一種非常具有發(fā)展?jié)摿Φ男滦汀熬G色”電力變換器。驅(qū)動電機時使系統(tǒng)具有優(yōu)良傳動性能的同時,更對電網(wǎng)無諧波污染。TSMC直流側無儲能環(huán)節(jié)這一特點使得整流和逆變兩級存在相互耦合的問題,在驅(qū)動電機系統(tǒng)中,變換器的輸出側電壓電流關系到電機的傳動性能,同時輸入側電流又關系到電網(wǎng)電能質(zhì)量。然而傳統(tǒng)的空間矢量調(diào)制策略是一種近似開環(huán)控制,無法消除這種耦合影響,并且很多場合對電機控制性能的要求越來越高,傳統(tǒng)的控制方法已難以滿足高性能的控制需求。針對上述問題,本文提出用預測控制實現(xiàn)TSMC驅(qū)動電機的一體化控制,利用網(wǎng)側輸入電壓、電流、開關電路輸入側電壓、TSMC開關矩陣模型和電機定子電流及轉(zhuǎn)子角速度,建立TSMC驅(qū)動電機系統(tǒng)數(shù)學模型并離散化,依據(jù)離散數(shù)學模型建立下一時刻輸入無功功率、電機定子磁鏈和電磁轉(zhuǎn)矩與各自參考值之間誤差的功能函數(shù),以此功能函數(shù)為約束對TSMC的開關狀態(tài)進行尋優(yōu),利用最優(yōu)開關狀態(tài)實現(xiàn)電機控制。在確保良好網(wǎng)側性能的同時,更有效地克服了模型誤差和外部環(huán)境干擾等不確定因素所造成的影響。為了驗證文中所提方案的正確性和有效性,在理論研究的基礎上,用仿真和實驗進行了方案驗證,搭建了以FPGA為控制核心的實驗平臺并設計了系統(tǒng)軟硬件。結果表明:TSMC驅(qū)動電機預測控制實現(xiàn)了電機定子磁鏈、電測轉(zhuǎn)矩分別高精度跟隨其參考值,輸入無功功率最小的效果,使系統(tǒng)具有優(yōu)良的網(wǎng)側和傳動性能。
[Abstract]:The main power supply equipment of AC speed regulation system is the power converter, but the traditional power converter can not overcome the inherent defects of the converter itself. Because the two-stage matrix converter (Two-stage Matrix Converter, TSMC) has no energy storage capacity at the DC side, the cost is saved and the device volume is reduced. The sinusoidal input and output current, the controllable input power factor and the two-way energy flow can be realized in the performance of the converter. It is a new type of "green" power converter with great potential for development. When driving the motor, the system has excellent transmission performance and no harmonic pollution. TSMC DC side has no energy storage link, which makes the two stages of rectifier and inverter coupled with each other. In the drive motor system, The output voltage and current of the converter are related to the drive performance of the motor and the input current is also related to the power quality of the power grid. However, the traditional space vector modulation strategy is a kind of approximate open-loop control, which can not eliminate the coupling effect, and in many cases, the control performance of the motor is more and more demanding. The traditional control method has been difficult to meet the high performance control requirements. In order to solve the above problems, a predictive control method is proposed to realize the integrated control of the TSMC motor. The input voltage, current, input voltage of the switch circuit and the stator current and rotor angular velocity of the motor are used in this paper. The mathematical model of TSMC drive motor system is established and discretized. According to the discrete mathematical model, the function of input reactive power, the error between stator flux and electromagnetic torque and their reference value is established. The switching state of TSMC is optimized by the function, and the motor control is realized by the optimal switching state. At the same time, it can effectively overcome the influence of uncertainty such as model error and external environment disturbance. In order to verify the correctness and validity of the proposed scheme, based on the theoretical research, the scheme is verified by simulation and experiment. The experimental platform with FPGA as the control core is built and the software and hardware of the system are designed. The results show that the predictive control of the 1: TSMC drive motor realizes the stator flux linkage of the motor, the high precision of electric torque following its reference value, and the minimum input reactive power, which makes the system have excellent network side and transmission performance.
【學位授予單位】：西安理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM46

【參考文獻】

相關期刊論文 前10條

1 程啟明;黃偉;程尹曼;徐聰;郭凱;;雙級矩陣變換器驅(qū)動永磁同步電機的混合非線性控制系統(tǒng)[J];電工技術學報;2017年04期

2 牛峰;李奎;王堯;;永磁同步電機模型預測直接轉(zhuǎn)矩控制[J];電機與控制學報;2015年12期

3 王萌;施艷艷;沈明輝;王海明;逯亞瑩;祁明艷;;三相電壓型整流器模型電壓預測控制[J];電工技術學報;2015年16期

4 張杰;柴建云;孫旭東;陸海峰;;雙三相異步電機電流預測控制算法[J];電工技術學報;2015年09期

5 張永昌;楊海濤;;異步電機無速度傳感器模型預測控制[J];中國電機工程學報;2014年15期

6 鄭澤東;陳寧寧;李永東;;基于模型預測控制的異步電機弱磁控制新方法[J];電工技術學報;2014年03期

7 沈坤;章兢;王堅;;一種多步預測的變流器有限控制集模型預測控制算法[J];中國電機工程學報;2012年33期

8 李玉玲;王克柔;林輝品;張仲超;;三相Boost并網(wǎng)逆變器的離散時間預測控制[J];中國電機工程學報;2011年15期

9 李景燦;廖勇;;考慮飽和及轉(zhuǎn)子磁場諧波的永磁同步電機模型[J];中國電機工程學報;2011年03期

10 王晶鑫;姜建國;;矩陣變換器驅(qū)動感應電機轉(zhuǎn)矩和轉(zhuǎn)子磁鏈控制[J];電機與控制學報;2010年07期

相關博士學位論文 前1條

1 許芳;快速模型預測控制的FPGA實現(xiàn)及其應用研究[D];吉林大學;2014年

相關碩士學位論文 前3條

1 齊庭庭;雙級矩陣變換器的預測控制策略研究[D];湘潭大學;2013年

2 楊超;考慮磁路飽和的同步磁阻電機控制策略研究[D];重慶大學;2013年

3 魏西平;雙級矩陣變換器的仿真與實驗研究[D];西安理工大學;2010年

，

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