本文選題：光伏發(fā)電系統(tǒng) + 直驅(qū)永磁同步風(fēng)力發(fā)電系統(tǒng)��； 參考：《電子科技大學(xué)》2016年碩士論文

【摘要】：能源危機(jī)和環(huán)境污染問題已經(jīng)引起了世界各國的廣泛關(guān)注,大力發(fā)展可再生能源發(fā)電系統(tǒng)是解決上述問題的關(guān)鍵技術(shù)手段。風(fēng)能和太陽能發(fā)電是可再生能源的重要發(fā)展方向,隨著風(fēng)力發(fā)電和光伏發(fā)電的快速發(fā)展,其裝機(jī)容量快速上升。由于風(fēng)光發(fā)電系統(tǒng)輸出功率對(duì)天氣變化極為敏感,具有隨機(jī)性和間歇性特點(diǎn),大規(guī)模間歇性能源接入傳統(tǒng)電力系統(tǒng)將會(huì)對(duì)并網(wǎng)點(diǎn)功率和頻率造成不利影響。為了解決這一問題,通常在風(fēng)光發(fā)電系統(tǒng)中配置儲(chǔ)能裝置平抑間歇性能源輸出功率波動(dòng)來改善系統(tǒng)的電能質(zhì)量。本文針對(duì)這一問題,以風(fēng)光儲(chǔ)發(fā)電系統(tǒng)為研究對(duì)象,重點(diǎn)研究儲(chǔ)能裝置在風(fēng)光系統(tǒng)中的應(yīng)用技術(shù),提出了儲(chǔ)能系統(tǒng)改進(jìn)型功率波動(dòng)平抑控制策略。建立了光伏發(fā)電系統(tǒng)、直驅(qū)永磁同步風(fēng)力發(fā)電系統(tǒng)以及蓄電池儲(chǔ)能系統(tǒng)的數(shù)學(xué)模型,給出了光伏電池和風(fēng)力渦輪機(jī)輸出特性,分析了光照和溫度變化情況下對(duì)光伏的電氣特性的影響,同時(shí)也分析了風(fēng)速以及槳距角變化對(duì)轉(zhuǎn)矩和輸出功率的影響。給出了蓄電池的等效電路,對(duì)蓄電池充電和放電全過程進(jìn)行了分析。根據(jù)可再生能源發(fā)電系統(tǒng)中不同變換器的職能制定了光伏發(fā)電系統(tǒng)和風(fēng)力發(fā)電系統(tǒng)中電力電子裝置的控制策略,給出了系統(tǒng)的控制結(jié)構(gòu),并且進(jìn)行了詳細(xì)的分析。通過典型I型和II型系統(tǒng)設(shè)計(jì)了PWM變換器的外環(huán)和內(nèi)環(huán)的PI參數(shù),通過仿真軟件分別搭建了風(fēng)力發(fā)電系統(tǒng)和光伏發(fā)電系統(tǒng)的仿真模型,在風(fēng)速變化情況下對(duì)風(fēng)力發(fā)電系統(tǒng)進(jìn)行了仿真研究,驗(yàn)證了最大風(fēng)能捕獲控制策略的有效性;在光照強(qiáng)度以及溫度變化情況下光伏發(fā)電單元進(jìn)行了仿真研究,表明了光伏發(fā)電系統(tǒng)能夠根據(jù)外界天氣條件的變化始終保持系統(tǒng)運(yùn)行在最大功率點(diǎn),驗(yàn)證了模型的有效性。為了克服線性PI控制策略的不足,提出了一種基于模糊控制理論的改進(jìn)型功率波動(dòng)平抑控制策略,給出了模糊控制的基本原理、基本結(jié)構(gòu)和實(shí)現(xiàn)過程,通過仿真軟件分別對(duì)未加入和加入功率波動(dòng)平抑控制策略進(jìn)行了仿真研究。仿真結(jié)果表明采用新型功率波動(dòng)平抑控制策略能夠獲得更好的動(dòng)態(tài)響應(yīng)性能以及抗擾動(dòng)能力。
[Abstract]:Energy crisis and environmental pollution have attracted wide attention from all countries in the world. Developing renewable energy generation system is the key technology to solve the above problems. Wind and solar power generation is an important development direction of renewable energy. With the rapid development of wind power and photovoltaic power generation, its installed capacity is rapidly rising. As the output power of wind power generation system is very sensitive to weather change, it has the characteristics of randomness and intermittency. The access of large-scale intermittent energy to traditional power system will have adverse effects on the power and frequency of network nodes. In order to solve this problem, the energy storage device is usually configured to suppress intermittent energy output in the wind power generation system. The power fluctuation of the power system is used to improve the power quality of the system. This paper focuses on the wind and solar energy storage system as the research object, focuses on the application technology of the energy storage device in the wind and wind system, and puts forward the improved control strategy for the power fluctuation of the energy storage system, and establishes the PV power generation system, the direct drive permanent magnet synchronous wind power generation system and the direct drive system. The mathematical model of the battery energy storage system, the output characteristics of the photovoltaic cells and wind turbines are given. The influence of the light and temperature changes on the electrical characteristics of the photovoltaic cells is analyzed. At the same time, the influence of the wind speed and the change of the pitch angle on the torque and output power is analyzed. The equivalent circuit of the battery is given, and the battery charging and discharging is given. The whole process is analyzed. According to the functions of different converters in the renewable energy generation system, the control strategy of the photovoltaic power system and the power electronic device in the wind power generation system is formulated. The control structure of the system is given and the detailed analysis is made. The outer ring of the PWM converter is designed by the typical I type and the II type system. The PI parameters of the inner ring are used to build the simulation model of the wind power system and the photovoltaic power generation system through the simulation software. The simulation of wind power system is carried out under the wind speed change. The effectiveness of the maximum wind energy capture control strategy is verified. The photovoltaic power unit is simulated under the light intensity and the temperature change. The real research shows that the PV system can keep the system running at the maximum power point according to the change of the weather conditions, and verify the validity of the model. In order to overcome the shortage of the linear PI control strategy, an improved power wave suppression control strategy based on fuzzy control theory is proposed, and the base of fuzzy control is given. This principle, the basic structure and the implementation process are simulated by simulation software. The simulation results show that the new power fluctuation reduction control strategy can obtain better dynamic response performance and anti disturbance ability.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TM61

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本文編號(hào)：1923117