【摘要】：隨著化石燃料燃燒帶來(lái)的環(huán)境污染加劇及其儲(chǔ)量的減少,全球?qū)︼L(fēng)能等可再生能源的開發(fā)利用越來(lái)越重視。風(fēng)能是目前技術(shù)最成熟、最具規(guī)�；l(fā)展前景的可再生能源。近幾年世界風(fēng)力機(jī)新增裝機(jī)容量持續(xù)攀升。風(fēng)電裝備的維護(hù)成本、運(yùn)行可靠性和使用壽命等問(wèn)題也隨之日益受到關(guān)注,尤其傳統(tǒng)風(fēng)電機(jī)組存在齒輪箱故障率高、變流器技術(shù)復(fù)雜及諧波干擾等問(wèn)題。也有液壓傳動(dòng)式風(fēng)電機(jī)組被研制出來(lái),雖然可以彌補(bǔ)傳統(tǒng)風(fēng)電機(jī)組的一些缺陷,但是傳動(dòng)效率較低。本文提出基于機(jī)械液壓混合傳動(dòng)的風(fēng)力發(fā)電機(jī)組,通過(guò)合理配置系統(tǒng)參數(shù),可以使得多數(shù)功率經(jīng)機(jī)械傳遞,少數(shù)功率經(jīng)液壓傳遞,功率合流供給勵(lì)磁同步發(fā)電機(jī),幾乎不對(duì)電網(wǎng)產(chǎn)生諧波干擾,減緩載荷沖擊。該風(fēng)力機(jī)不依靠傳統(tǒng)的變流器控制發(fā)電機(jī)電磁轉(zhuǎn)矩,而是通過(guò)控制變量泵排量來(lái)控制風(fēng)輪轉(zhuǎn)速,以捕獲最大功率。同時(shí),也可以調(diào)節(jié)發(fā)電機(jī)轉(zhuǎn)速以滿足并網(wǎng)要求。論文通過(guò)五個(gè)章節(jié)對(duì)機(jī)械液壓混合傳動(dòng)式風(fēng)力發(fā)電機(jī)組功率控制技術(shù)進(jìn)行研究,五個(gè)章節(jié)的主要內(nèi)容分別是：第一章介紹課題的研究背景,國(guó)內(nèi)外風(fēng)電發(fā)展現(xiàn)狀以及風(fēng)力機(jī)技術(shù)現(xiàn)狀。提出課題研究意義和研究?jī)?nèi)容。第二章首先對(duì)機(jī)械液壓混合傳動(dòng)結(jié)構(gòu)方案論證,提出適合于風(fēng)力機(jī)的機(jī)械液壓混合傳動(dòng)方案。然后理論分析該傳動(dòng)系統(tǒng)的轉(zhuǎn)速、功率、效率特性。提出基于該傳動(dòng)方式的并網(wǎng)轉(zhuǎn)速控制和額定風(fēng)速以下最大功率捕獲方法。第三章建立該風(fēng)力發(fā)電機(jī)組的動(dòng)態(tài)模型,包括風(fēng)速、風(fēng)輪、混合傳動(dòng)系統(tǒng)、勵(lì)磁同步發(fā)電機(jī)、電網(wǎng)模型。在AMESim中建立機(jī)械液壓混合傳動(dòng)系統(tǒng)模型,驗(yàn)證其轉(zhuǎn)速、功率、效率特性。以1.5 MW機(jī)械液壓混合傳動(dòng)式并網(wǎng)風(fēng)電機(jī)組為例,對(duì)主要部件進(jìn)行參數(shù)計(jì)算,利用AMESim與MATLAB/simulink軟件對(duì)機(jī)組運(yùn)行工況進(jìn)行聯(lián)合仿真分析。仿真結(jié)果驗(yàn)證了機(jī)械液壓混合傳動(dòng)在并網(wǎng)風(fēng)電機(jī)組中的可行性,表明提出的機(jī)械液壓混合傳動(dòng)式風(fēng)力發(fā)電系統(tǒng)具有變速恒頻控制方法簡(jiǎn)單、載荷沖擊小、傳動(dòng)效率較高、電網(wǎng)友好性好等特點(diǎn)。第四章對(duì)30kW機(jī)械液壓混合傳動(dòng)式風(fēng)電機(jī)組的模擬試驗(yàn)系統(tǒng)進(jìn)行研究,內(nèi)容包括硬件選型、PLC控制系統(tǒng)設(shè)計(jì)、上位機(jī)程序設(shè)計(jì)等。經(jīng)實(shí)驗(yàn)表明模擬風(fēng)輪裝置可以較快跟蹤輸入信號(hào),轉(zhuǎn)矩輸出準(zhǔn)確,較好地模擬風(fēng)輪。上位機(jī)程序的數(shù)據(jù)顯示、記錄、與PLC和儀器的通信正常。第五章對(duì)課題的研究工作和成果總結(jié),并對(duì)課題之后的研究方向和內(nèi)容展望。
[Abstract]:With the increase of environmental pollution caused by fossil fuel combustion and the decrease of reserves, more and more attention has been paid to the development and utilization of renewable energy such as wind energy. Wind energy is the most mature technology and the most promising renewable energy. In recent years, the new installed capacity of wind turbines in the world continues to climb. The maintenance cost, operation reliability and service life of wind power equipment have been paid more and more attention, especially the problems of high gearbox failure rate, complicated converter technology and harmonic interference in traditional wind turbines. Some hydraulic wind turbines have been developed, although they can make up for some defects of traditional wind turbines, but the transmission efficiency is low. In this paper, it is put forward that the wind turbine based on mechanical hydraulic hybrid drive can make most of the power transfer through machinery, a few power through hydraulic transmission, and the combined power supply excitation synchronous generator through reasonable configuration of system parameters. There is almost no harmonic interference to the power grid, and the impact of load is mitigated. The wind turbine does not rely on the traditional converter to control the electromagnetic torque of the generator, but by controlling the displacement of the variable pump to control the speed of the wind turbine in order to capture the maximum power. At the same time, the speed of the generator can also be adjusted to meet the requirements of grid connection. In this paper, the power control technology of the mechanically hydraulic hybrid drive wind turbine is studied in five chapters. The main contents of the five chapters are as follows: chapter 1 introduces the research background of the subject. The current situation of wind power development and wind turbine technology at home and abroad. The significance and content of the research are put forward. In the second chapter, the structure of mechanical hydraulic hybrid transmission is demonstrated, and the mechanical hydraulic hybrid transmission scheme suitable for wind turbine is put forward. Then theoretical analysis of the transmission system speed, power, efficiency characteristics. This paper presents a grid-connected speed control and maximum power capture method under rated wind speed based on the transmission mode. In chapter 3, the dynamic model of the wind turbine is established, including wind speed, wind turbine, hybrid drive system, excitation synchronous generator and grid model. The model of mechanical hydraulic hybrid transmission system is established in AMESim to verify its rotational speed, power and efficiency characteristics. Taking 1.5 MW mechanically hydraulic hybrid transmission wind turbine as an example, the parameters of main components are calculated, and the operating conditions of the unit are simulated and analyzed by AMESim and MATLAB/simulink software. The simulation results verify the feasibility of mechanical hydraulic hybrid transmission in grid-connected wind turbine. It shows that the proposed mechanical-hydraulic hybrid drive wind power generation system has the advantages of simple variable speed constant frequency control method, low load impact and high transmission efficiency. Power grid friendly and other characteristics. In the fourth chapter, the simulation test system of 30kW mechanical hydraulic hybrid drive wind turbine is studied, including hardware selection and PLC control system design, upper computer program design and so on. The experimental results show that the analog wind turbine device can track the input signal quickly, and the torque output is accurate and the wind turbine can be simulated well. PC program data display, record, and PLC and the instrument communication is normal. The fifth chapter summarizes the research work and results of the subject, and looks forward to the research direction and content after the subject.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM315

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相關(guān)期刊論文 前2條

1 蘇曉;;印度風(fēng)電發(fā)展情況分析[J];風(fēng)能;2013年12期

2 侯U喨，

本文編號(hào)：2170693