【摘要】：能源緊缺已成為世界性的難題。新能源如風能、太陽能等研究得到了人們廣泛的關(guān)注。風力發(fā)電以其高效、可再生的優(yōu)點,成為了當今主要的發(fā)電方式之一。永磁直驅(qū)風力發(fā)電以其發(fā)電效率高、電網(wǎng)接入性能優(yōu)等特點成為主流的發(fā)電方式。永磁直驅(qū)風力發(fā)電系統(tǒng)的控制包括電網(wǎng)側(cè)變換器的控制和電機側(cè)永磁發(fā)電機的控制。電網(wǎng)側(cè)變換器的控制策略直接關(guān)系到發(fā)電機與電網(wǎng)之間的有功功率傳輸以及發(fā)電系統(tǒng)的無功調(diào)節(jié);電機側(cè)發(fā)電機的控制策略直接關(guān)系到電機定子輸出的有功功率和發(fā)電系統(tǒng)的風能利用率。因此,采用合適的永磁直驅(qū)風力發(fā)電控制策略是提高發(fā)電系統(tǒng)性能的關(guān)鍵。本文圍繞永磁直驅(qū)風力發(fā)電控制策略進行研究。首先,以電網(wǎng)側(cè)變換器作為研究對象,針對電網(wǎng)電壓可能出現(xiàn)的畸變問題,對并網(wǎng)逆變器的關(guān)鍵技術(shù)—鎖相環(huán)進行了深入研究;引入了雙同步坐標系解耦軟件鎖相環(huán),并對并網(wǎng)電流控制策略進行了深入分析。其次,以電機側(cè)永磁電機作為研究對象,對其功率拓撲、數(shù)學模型和雙閉環(huán)控制機理進行剖析,分析了矢量控制技術(shù);針對風力發(fā)電的實際應(yīng)用,重點研究了永磁同步電機的無速度傳感器控制技術(shù);分析了滑模觀測器在無速度傳感器中的應(yīng)用,針對滑模觀測器應(yīng)用的缺點,引入了基于擾動觀測器的無速度傳感器控制技術(shù),從而避免了由于滑模觀測器對狀態(tài)變量電流進行微分而引起的高頻干擾,以及因滑模觀測器自身存在的固有抖振帶來高頻諧波而需設(shè)計數(shù)字濾波器引起的相位延時等問題。最后,利用PSIM和Microsoft Visual C++6.0進行聯(lián)合仿真,分別對電網(wǎng)畸變條件下的鎖相環(huán)性能、兩種無速度傳感器控制算法和發(fā)電系統(tǒng)整體控制策略進行仿真驗證;基于搭建的實驗平臺,編寫了控制軟件,并進行了相關(guān)實驗研究。仿真和實驗研究均表明:提出的永磁直驅(qū)風力發(fā)電系統(tǒng)控制策略能夠?qū)崿F(xiàn)系統(tǒng)的變速恒頻發(fā)電運行、電網(wǎng)電壓故障下的精確鎖相、獨立調(diào)節(jié)系統(tǒng)輸出的有功和無功功率、保證永磁電機無速度傳感器的穩(wěn)定運行、輸出正弦性較好的并網(wǎng)電流。仿真和實驗結(jié)果與理論相符,為工程應(yīng)用奠定了基礎(chǔ)。
[Abstract]:Energy shortage has become a worldwide problem. The research of new energy such as wind energy and solar energy has been paid more and more attention. Wind power generation has become one of the main power generation methods because of its high efficiency and renewable advantages. Permanent magnet direct drive wind power generation has become the mainstream generation mode due to its high generation efficiency and excellent grid access performance. The control of permanent magnet direct drive wind power generation system includes the control of power side converter and the control of motor side permanent magnet generator. The control strategy of the grid side converter is directly related to the active power transmission between the generator and the power grid and the reactive power regulation of the power generation system. The control strategy of the motor side generator is directly related to the active power output of the motor stator and the utilization of wind energy in the power generation system. Therefore, the proper permanent magnet direct drive wind power generation control strategy is the key to improve the performance of power generation system. The control strategy of permanent magnet direct drive wind power generation is studied in this paper. Firstly, the phase-locked loop (PLL), the key technology of grid-connected inverter, is studied in detail, aiming at the possible distortion of the grid voltage, taking the grid-side converter as the research object. The double synchronous coordinate decoupling software phase locked loop (PLL) is introduced and the current control strategy of grid connection is analyzed. Secondly, the power topology, mathematical model and double closed loop control mechanism of the permanent magnet motor on the motor side are analyzed, and the vector control technology is analyzed. Aiming at the practical application of wind power generation, the speed sensorless control technology of permanent magnet synchronous motor (PMSM) is studied. In this paper, the application of sliding mode observer in speed sensorless system is analyzed. According to the shortcomings of sliding mode observer, the speed sensorless control technology based on disturbance observer is introduced. Therefore, the high frequency interference caused by the differentiation of the state variable current by the sliding mode observer and the phase delay caused by the high frequency harmonic caused by the inherent buffeting caused by the sliding mode observer are avoided, and the phase delay caused by the design of the digital filter is also avoided. Finally, PSIM and Microsoft Visual C 6.0 are used to simulate and verify the performance of PLL, two speed sensorless control algorithms and the overall control strategy of power generation system under the condition of power grid distortion respectively. Based on the built-up experimental platform, the control software is programmed and the related experiments are carried out. The simulation and experimental results show that the proposed control strategy can realize the VSCF operation of the system, the precise phase locking under the voltage fault of the power grid, and the independent regulation of the active and reactive power output of the system, and the control strategy of the permanent magnet direct drive wind power generation system can realize the variable speed constant frequency generation operation of the system. Ensure the permanent magnet motor speed sensorless stable operation, output sinusoidal better grid-connected current. The results of simulation and experiment agree with the theory and lay a foundation for engineering application.
【學位授予單位】：江蘇大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM315

【參考文獻】

相關(guān)期刊論文 前10條

1 杭俊;張建忠;程明;丁石川;李國麗;;基于線電壓誤差的永磁直驅(qū)風電系統(tǒng)變流器開路故障診斷[J];中國電機工程學報;2017年10期

2 張曲遙;高艷霞;陳靜;宋文祥;;基于滑模觀測器的永磁同步電機無位置傳感器控制[J];電機與控制應(yīng)用;2016年06期

3 冀飛鶯;郭政建;;風力發(fā)電及其技術(shù)發(fā)展研究[J];企業(yè)技術(shù)開發(fā);2016年02期

4 陸ZK泉;林鶴云;韓俊林;;永磁同步電機的擾動觀測器無位置傳感器控制[J];中國電機工程學報;2016年05期

5 王麗宏;;我國風力發(fā)電現(xiàn)狀及技術(shù)發(fā)展[J];科技與企業(yè);2015年18期

6 黃科元;劉靜佳;黃守道;易韻嵐;周李澤;;永磁直驅(qū)系統(tǒng)變流器開路故障診斷方法[J];電工技術(shù)學報;2015年16期

7 宋恒東;董學育;;風力發(fā)電技術(shù)現(xiàn)狀及發(fā)展趨勢[J];電工電氣;2015年01期

8 張興;郭磊磊;楊淑英;曹仁賢;;永磁同步發(fā)電機無速度傳感器控制[J];中國電機工程學報;2014年21期

9 李妍;;關(guān)于我國風力發(fā)電現(xiàn)狀及其技術(shù)應(yīng)用狀況的分析[J];科技創(chuàng)新與應(yīng)用;2014年03期

10 史旺旺;劉超;;基于Lyapunov函數(shù)的直驅(qū)式風力發(fā)電機的無速度傳感器直接功率控制[J];電力自動化設(shè)備;2013年01期

相關(guān)博士學位論文 前2條

1 任康樂;中壓三電平全功率風電變流器關(guān)鍵技術(shù)研究[D];合肥工業(yè)大學;2016年

2 王慶龍;交流電機矢量控制系統(tǒng)滑模變結(jié)構(gòu)控制策略研究[D];合肥工業(yè)大學;2007年

相關(guān)碩士學位論文 前9條

1 王詩琦;基于TMS320F28335的永磁同步電機矢量控制系統(tǒng)設(shè)計[D];大連理工大學;2014年

2 徐亞偉;并網(wǎng)逆變器中全軟件鎖相環(huán)的設(shè)計與實現(xiàn)[D];南京理工大學;2014年

3 龍明貴;永磁同步電機矢量控制分析[D];西南交通大學;2012年

4 劉彬;無速度傳感器的直驅(qū)永磁風力發(fā)電變流器控制研究[D];哈爾濱工業(yè)大學;2012年

5 朱曉亮;基于電網(wǎng)電壓定向三相并網(wǎng)逆變器的研究[D];南京航空航天大學;2010年

6 程顯忠;風力發(fā)電試驗系統(tǒng)的研究[D];合肥工業(yè)大學;2007年

7 侯慶明;中小型永磁直驅(qū)風力發(fā)電控制系統(tǒng)的設(shè)計和仿真[D];沈陽工業(yè)大學;2006年

8 湯新舟;永磁同步電機的矢量控制系統(tǒng)[D];浙江大學;2005年

9 代洪濤;15KW變速恒頻雙饋風力發(fā)電機勵磁控制系統(tǒng)的研究[D];沈陽工業(yè)大學;2004年

，

本文編號：2468021