本文選題：水輪機 + 并網(wǎng)逆變器��； 參考：《哈爾濱工程大學》2014年碩士論文

【摘要】：隨著環(huán)境污染的加劇,以及傳統(tǒng)化石能源的日益枯竭,新能源開發(fā)已經(jīng)迫在眉睫。海洋中儲存著巨大的能量,包括潮流能,潮汐能和波浪能等,其中潮流能的開發(fā)已經(jīng)比較成熟,已進行了若干次海上試驗。本論文研究的內(nèi)容是潮流能發(fā)電系統(tǒng)的電力變換裝置,總體來說包括兩大部分,第一部分是水輪機的最大功率跟蹤;第二部分是逆變器并網(wǎng)控制。論文首先分析了潮流能開發(fā)的必要性與緊迫性,然后比較了幾種電力變換裝置方案,并從中選出了本文所采用的方案即永磁直驅(qū)系統(tǒng)方案。其次對所采用的電力變換裝置進行了數(shù)學建模,以便其控制器的設(shè)計。然后研究了各部分電力變換裝置的控制策略,包括水輪機的最大功率跟蹤和并網(wǎng)逆變器的控制,其中并網(wǎng)逆變器的控制是本文研究的重點。在水輪機最大功率跟蹤方面,采用了基于Boost電感電流閉環(huán)和爬坡自尋優(yōu)的最大功率獲取策略。首先建立了水輪機的數(shù)學模型,然后結(jié)合Boost的MATLAB仿真電路和水輪機仿真模型對MPPT算法進行了仿真,驗證了 MPPT策略的正確性。在并網(wǎng)逆變器控制方面,首先研究了逆變器調(diào)制技術(shù),在分析了兩種調(diào)制技術(shù)的優(yōu)缺點后最終選擇了 SVPWM的逆變器調(diào)制技術(shù)。其次探索了逆變器的電網(wǎng)鎖相技術(shù),最終選擇了一種可以抗電網(wǎng)不平衡的基于T/4延時的鎖相技術(shù)。然后研究了并網(wǎng)逆變器的功率控制,最終采用了基于直流母線電壓閉環(huán),并網(wǎng)電流和電網(wǎng)電壓同相位的單位功率因數(shù)控制方案。最后研究了逆變器的直流母線電壓保護技術(shù)和逆變器出現(xiàn)孤島現(xiàn)象的檢測和對策。在以上理論研究后,做了系統(tǒng)的硬件電路設(shè)計,包括功率電路設(shè)計和控制電路設(shè)計。其中功率電路的設(shè)計又包括三相不控整流單元設(shè)計,Boost電路設(shè)計,以及并網(wǎng)逆變器電路設(shè)計,其中并網(wǎng)逆變器設(shè)計是本文的重點�？刂撇糠值脑O(shè)計,主要包括AD采樣電路設(shè)計,PWM信號隔離輸出設(shè)計和控制系統(tǒng)電源設(shè)計。最后做了整個系統(tǒng)的仿真,包括水輪機,不可控整流橋,Boost系統(tǒng),逆變器系統(tǒng),電網(wǎng)等在一起的仿真,驗證了以上理論的正確性。為了驗證整個系統(tǒng)的抗干擾性能,研究了在水流速度突增和突減時的系統(tǒng)動態(tài)響應(yīng)效果,實驗結(jié)果表明系統(tǒng)抗干擾性能良好。在以上理論的基礎(chǔ)上,最后做了硬件實驗,驗證了Boost電感電流閉環(huán)控制的可行性,實現(xiàn)了10KVA逆變器的并網(wǎng)控制。
[Abstract]:With the intensification of environmental pollution and the depletion of traditional fossil energy, the development of new energy is imminent. Great energy is stored in the ocean, including tidal energy, wave energy and so on. The main content of this thesis is the power conversion device of power flow power generation system, which consists of two parts: the first part is the maximum power tracking of the turbine, and the second part is the grid-connected control of the inverter. Firstly, the necessity and urgency of power flow energy development are analyzed, then several schemes of power conversion device are compared, from which the scheme of permanent magnet direct drive system is selected. Secondly, the mathematical model of the power conversion device is built so that the controller can be designed. Then the control strategy of the power converter is studied, including the maximum power tracking of the turbine and the control of grid-connected inverter, among which the control of grid-connected inverter is the focus of this paper. In the aspect of maximum power tracking of hydraulic turbine, the maximum power acquisition strategy based on boost inductor current closed loop and slope climbing self-optimization is adopted. Firstly, the mathematical model of hydraulic turbine is established, and then the MPPT algorithm is simulated with boost MATLAB simulation circuit and hydraulic turbine simulation model, which verifies the correctness of MPPT strategy. In the aspect of grid-connected inverter control, the inverter modulation technology is studied firstly. After analyzing the advantages and disadvantages of the two modulation techniques, the SVPWM inverter modulation technology is finally selected. Secondly, the power grid phase-locking technology of inverter is explored, and a phase locking technology based on T- / 4 delay is chosen to resist the imbalance of power grid. Then the power control of grid-connected inverter is studied, and the unit power factor control scheme based on DC bus voltage closed loop, grid-connected current and grid voltage phase is adopted. Finally, the DC bus voltage protection technology of the inverter and the detection and countermeasure of the isolated island phenomenon of the inverter are studied. After the above theoretical research, the system hardware circuit design, including power circuit design and control circuit design. The design of power circuit includes the design of three-phase uncontrolled rectifier unit and boost circuit, and the circuit design of grid-connected inverter. The design of grid-connected inverter is the focus of this paper. The control part includes AD sampling circuit design PWM signal isolation output design and control system power supply design. Finally, the simulation of the whole system, including hydraulic turbine, uncontrollable rectifier bridge boost system, inverter system, power grid and so on, is done to verify the correctness of the above theory. In order to verify the anti-jamming performance of the whole system, the dynamic response effect of the system under the sudden increase and decrease of the flow velocity is studied. The experimental results show that the anti-jamming performance of the system is good. On the basis of the above theory, hardware experiments are done to verify the feasibility of boost inductor current closed-loop control, and the grid-connected control of 10KVA inverter is realized.
【學位授予單位】：哈爾濱工程大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM612;TM464

【參考文獻】

相關(guān)期刊論文 前10條

1 汪江其;王群京;李國麗;陳權(quán);許國良;魏磊;;基于SPWM/SVPWM調(diào)制策略的逆變器效率研究[J];電氣傳動;2013年01期

2 馬琳;金新民;唐芬;Pedro Rodrigue;孫凱;;三相并網(wǎng)逆變器比例諧振控制及其網(wǎng)壓前饋問題分析[J];電工技術(shù)學報;2012年08期

3 孔凡凱;鄭大勇;孫桂林;應(yīng)麗霞;;豎直軸潮流發(fā)電水輪機調(diào)距機構(gòu)設(shè)計[J];哈爾濱工程大學學報;2011年09期

4 金明鳳;趙為;楊淑英;張興;;風電并網(wǎng)變換器直接功率控制策略[J];電力電子技術(shù);2011年08期

5 張鋼;柴建云;全恒立;阮白水;;直驅(qū)式風力發(fā)電變流系統(tǒng)拓撲方案研究[J];電工技術(shù)學報;2011年07期

6 吉正華;韋芬卿;楊海英;;基于dq變換的三相軟件鎖相環(huán)設(shè)計[J];電力自動化設(shè)備;2011年04期

7 楊淑英;張興;張崇巍;謝震;曹仁賢;;LCL濾波電壓源并網(wǎng)逆變器多環(huán)控制策略設(shè)計[J];電力系統(tǒng)自動化;2011年05期

8 胡義華;陳昊;徐瑞東;胡賢新;王小昆;;一種兩階段變步長最大功率點控制策略[J];電工技術(shù)學報;2010年08期

9 游亞戈;李偉;劉偉民;李曉英;吳峰;;海洋能發(fā)電技術(shù)的發(fā)展現(xiàn)狀與前景[J];電力系統(tǒng)自動化;2010年14期

10 戴慶忠;;潮流能發(fā)電及潮流能發(fā)電裝置[J];東方電機;2010年02期

相關(guān)博士學位論文 前1條

1 楊淑英;雙饋型風力發(fā)電變流器及其控制[D];合肥工業(yè)大學;2007年

相關(guān)碩士學位論文 前6條

1 厲文超;水平軸潮流發(fā)電水輪機最大功率捕獲技術(shù)研究[D];中國海洋大學;2011年

2 夏廷君;有源電力濾波裝置中LC濾波器改進設(shè)計的研究[D];哈爾濱理工大學;2010年

3 蔣懿;中德可再生能源法比較研究[D];中國政法大學;2010年

4 鐘志明;雙饋感應(yīng)風力機變槳距控制的研究[D];長沙理工大學;2009年

5 劉偉;潮流電站電能轉(zhuǎn)換與并網(wǎng)控制研究[D];哈爾濱工程大學;2006年

6 龍平;獨立運行風/光互補監(jiān)測系統(tǒng)研究[D];中國科學院研究生院（電工研究所）;2004年

，

本文編號：2110390