本文選題：海流發(fā)電系統(tǒng)　切入點：液壓傳動　出處：《浙江大學(xué)》2014年博士論文

【摘要】：社會經(jīng)濟的快速發(fā)展提高了對能源的需求,受傳統(tǒng)化石能源的過度消耗和環(huán)境污染等的影響,風(fēng)能、太陽能、海洋能等可再生能源發(fā)電技術(shù)越來越受到國內(nèi)外學(xué)者的重視。本文研究的海流能發(fā)電技術(shù)是一種利用海水流體動能來發(fā)電的可再生能源利用技術(shù)。海流能資源蘊藏量大,且具有能量密度大、規(guī)律性強等優(yōu)點,海流能的研究及其大規(guī)模開發(fā)將對能源結(jié)構(gòu)的多樣化、降低對傳統(tǒng)能源的依賴等具有重要意義。海流能發(fā)電技術(shù)始于上世紀七十年代,并在近年來得到了快速發(fā)展,目前國際上單機功率已超過1MW。盡管如此,海流能發(fā)電機組仍有一些關(guān)鍵技術(shù)需要突破,如葉片設(shè)計技術(shù)、能量傳遞系統(tǒng)的穩(wěn)定性及其可靠性、變速恒頻控制技術(shù)等。本文在綜合國內(nèi)外海流能發(fā)電機組齒輪箱傳動、液壓傳動等技術(shù)的基礎(chǔ)上,并結(jié)合海流能發(fā)電機組應(yīng)便于維護的要求,提出基于電液比例容積調(diào)速控制的水下定量泵、水上變量泵-變量馬達海流發(fā)電系統(tǒng)能量傳遞方案,并對其變速恒頻控制技術(shù)進行了研究。論文在理論分析、數(shù)學(xué)建模、仿真模擬的基礎(chǔ)上,完成了樣機系統(tǒng)的場內(nèi)模擬試驗。論文的各章節(jié)內(nèi)容如下：第一章,結(jié)合課題的研究意義及背景,在綜合分析國內(nèi)外海流能發(fā)電能量傳動技術(shù)及其發(fā)展現(xiàn)狀的基礎(chǔ)上,提出了論文的主要研究內(nèi)容。第二章,介紹了水平軸海流發(fā)電系統(tǒng)的能量轉(zhuǎn)換及功率特性。運用葉素理論對運動水流中的葉片的受力情況及葉輪捕能原理進行分析,并得到了葉輪功率特性和轉(zhuǎn)矩特性。在此基礎(chǔ)上,對海流發(fā)電系統(tǒng)液壓式傳動系統(tǒng)能量傳遞原理進行了介紹。第三章,基于液壓系統(tǒng)壓力調(diào)節(jié)技術(shù),設(shè)計了“雙泵-單馬達”拓撲結(jié)構(gòu)的海流發(fā)電液壓傳動系統(tǒng),對比分析了“雙泵-單馬達-蓄能穩(wěn)壓”結(jié)構(gòu)和“雙泵.單馬達-無蓄能器”兩種結(jié)構(gòu),對上述結(jié)構(gòu)進行數(shù)學(xué)模型分析并制定了相應(yīng)的控制策略。結(jié)合實際應(yīng)用便于維護的要求,針對“雙泵-單馬達-無蓄能器”結(jié)構(gòu)制定了分工況控制策略,即高負載工況“變速”-低負載工況“恒頻”控制策略。第四章,對論文提出的海流發(fā)電液壓傳動系統(tǒng)分別進行建模,運用聯(lián)合仿真方法對系統(tǒng)結(jié)構(gòu)原理及對應(yīng)的“變速恒頻”控制策略進行仿真研究。結(jié)果表明,所設(shè)計海流發(fā)電液壓傳動系統(tǒng)可實現(xiàn)葉輪“變速”控制和發(fā)電機“恒頻”控制,從而驗證了所設(shè)計海流發(fā)電液壓式能量傳遞方案及其變速恒頻控制策略的正確性。第五章,針對“雙泵-單馬達-蓄能穩(wěn)壓”結(jié)構(gòu)和“雙泵-單馬達-無蓄能器”結(jié)構(gòu)兩種傳動形式,設(shè)計制造了4kW海流發(fā)電液壓傳動系統(tǒng)試驗平臺。該平臺通過轉(zhuǎn)矩閉環(huán)控制可實現(xiàn)葉輪轉(zhuǎn)矩的精確模擬。以階躍/恒流速信號和正弦流速信號作為試驗系統(tǒng)輸入,分別測試了試驗系統(tǒng)的動態(tài)響應(yīng)特性。試驗結(jié)果表明該傳動系統(tǒng)能夠較好地實現(xiàn)海流發(fā)電的“變速”和“恒頻”控制。第六章,針對海流發(fā)電系統(tǒng)液壓傳動效率相對較低的特點,設(shè)計了機械-液壓混合傳動的海流發(fā)電系統(tǒng)方案,并針對該方案制定了相應(yīng)的“變速恒頻”控制策略。建立了該系統(tǒng)的數(shù)學(xué)仿真模型,聯(lián)合仿真結(jié)果表明,機械-液壓混合傳動的海流發(fā)電系統(tǒng)不僅具有機械傳動效率高的優(yōu)點,而且可以在液壓傳動環(huán)節(jié)完成葉輪的“變速”控制。第七章,對本論文所作的研究工作進行了總結(jié),并概括了本論文的創(chuàng)新點。作為本論文研究工作的延續(xù),對后續(xù)的研究工作做了一些展望。
[Abstract]:The rapid development of social economy has increased the demand for energy, impact by the traditional fossil energy depletion and environmental pollution, wind energy, solar energy, ocean energy and other renewable energy power generation technology has attracted more and more attention of scholars at home and abroad. This paper studies the current power generation technology is a kind of renewable power generation using seawater fluid kinetic energy energy utilization technology. Current energy resource reserves, and has the advantages of high energy density, strong regularity, and its current research to the large-scale development of the energy structure diversification, is important to reduce dependence on traditional energy sources. The current power generation technology began in the last century in 70s, and has been developing rapidly in recent years at present, the international power has more than 1MW. in spite of this, current power generating unit there are still some key technology, such as blade design technology, energy transfer The stability and reliability of delivery system, variable speed control technology at home and abroad. In this paper, the current energy generator gearbox and basic hydraulic transmission technology, combined with the current power unit should facilitate the maintenance requirements, put forward the electro-hydraulic proportional speed control volume under water pump based on quantitative, water energy variables pump variable motor current generator system transfer scheme, and the variable speed constant frequency control technology is studied. Based on theoretical analysis, mathematical modeling and simulation based on the prototype system of the field simulation test. The chapters of the thesis are as follows: the first chapter, combining the research significance and background of the subject, in the based on the comprehensive analysis of domestic and foreign current power energy transmission technology and its development status, put forward the main contents of this thesis. The second chapter introduces the horizontal axis current power system Energy conversion and power characteristics. Using blade element theory and the stress of impeller blade motion flow in the trapping energy principle analysis, and get the impeller power and torque characteristics. On this basis, the energy transmission system of hydraulic power system ocean transfer principle are introduced. The third chapter, control technology of hydraulic system based on the pressure, the design of "ocean power hydraulic transmission system of double pump single motor topology, comparative analysis of the" double pump single motor - pumped storage power structure "and" double pump. Single motor - no accumulator "two kinds of structure, a mathematical model for analysis of the structure and the development of the the corresponding control strategy. According to the actual application requirements for easy maintenance, double pump and single motor - no" structure have condition control strategy of energy storage, high load "transmission" low load "frequency" control strategy Slightly. In the fourth chapter, the current generation of hydraulic transmission system proposed in this paper are modeling, using the co simulation method of system structure principle and the corresponding VSCF control strategy is simulated. The results show that the design of ocean power hydraulic transmission system can achieve the "speed control" impeller and generator "frequency" control, thus verify the design of ocean power hydraulic energy transfer scheme is correct and the variable speed constant frequency control strategy. In the fifth chapter, according to the "double pump single motor - pumped storage power structure" and "double pump - motor - no single accumulator" structure of two kinds of transmission form, 4kW test platform of hydraulic transmission system of the current generation the design and manufacture. The platform can realize accurate control simulation of the impeller torque through the torque loop. In step / constant flow rate signal and sine signal as the input velocity test system, test test The dynamic response characteristics of the test system. The test results show that the transmission system can realize current power generation "speed" and "speed control". In the sixth chapter, according to the characteristics of the hydraulic transmission efficiency of ocean current power generation system is relatively low, the design scheme of ocean current power generation system mechanical hydraulic hybrid transmission, and according to the plan the corresponding VSCF control strategy. A mathematical simulation model of the system, and the simulation results show that the current generation system of mechanical - hydraulic hybrid transmission not only has the advantages of high mechanical transmission efficiency, but also in the hydraulic transmission link of impeller velocity control. In the seventh chapter, the research work of this paper summarizes, and summarizes the innovation of this paper. As a continuation of the research work in this dissertation, the following research work is prospected.

【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：TM612;P743.1

【引證文獻】

相關(guān)會議論文 前2條

1 王傳];施偉勇;;中國海洋能資源的儲量及其評價[A];中國可再生能源學(xué)會海洋能專業(yè)委員會成立大會暨第一屆學(xué)術(shù)討論會論文集[C];2008年

2 張雪明;徐明奇;王巖峰;孫培光;;海洋水下儀器超低流速電能補充技術(shù)研究[A];中國可再生能源學(xué)會海洋能專業(yè)委員會成立大會暨第一屆學(xué)術(shù)討論會論文集[C];2008年

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本文編號：1660912