本文關(guān)鍵詞： 最大功率跟蹤 風光互補 分布式電源 母線電壓平衡　出處：《電子科技大學》2014年碩士論文　論文類型：學位論文

【摘要】：風能和太陽能這兩種常用的新能源現(xiàn)在已經(jīng)得到了廣泛的應(yīng)用,然而由于風能和太陽能都受環(huán)境變化的影響很大,它們在應(yīng)用的時候就有了一定的局限性,由于風能和太陽能具有天然的互補性,風光互補系統(tǒng)可以利用這種天然的互補性,因此本文對于風光互補系統(tǒng)進行研究。本文的主要內(nèi)容是基于微網(wǎng)的風光互補系統(tǒng)的系統(tǒng)原理和方案的分析,從功率控制的角度分析整個系統(tǒng)的功率平衡,并對功率控制的算法進行研究,主要從以下幾個方面進行具體工作內(nèi)容的研究:首先對風、光和蓄電池的特性進行了建模以及特性分析,并基于微網(wǎng)的兩種風光互補結(jié)構(gòu)進行了分析比較,提出了基于直流母線并聯(lián)的風光互補系統(tǒng)結(jié)構(gòu),下文基于這種結(jié)構(gòu)和微源特性的功率控制提供依據(jù);接下來對風能和太陽能的最大功率跟蹤的算法進行分析,對常用的幾種控制算法進行了分析和研究,以及其優(yōu)缺點的分析比較提出了一種優(yōu)化的算法結(jié)構(gòu);然后重點對功率控制的策略方法進行了研究,本文是基于直流母線對系統(tǒng)的的功率進行平衡控制,首先分析了母線電容對直流母線電壓穩(wěn)定對系統(tǒng)功率平衡的作用,然后對系統(tǒng)的各個模塊運行狀態(tài)分別在微網(wǎng)狀態(tài)下和并網(wǎng)狀態(tài)下進行了分析,分析了其和直流母線電壓以及功率平衡的關(guān)系,從而基于直流母線電壓的檢測實現(xiàn)通過各個模式的切換,最終實現(xiàn)系統(tǒng)的功率平衡控制;最后運用matlab的simulink工具箱完成了基于微網(wǎng)的風光互補交直流母線結(jié)構(gòu)的系統(tǒng)仿真模型搭建,并對系統(tǒng)的光伏系統(tǒng)和風力發(fā)電的最大功率跟蹤進行仿真,比較了本文的改進算法和原來的優(yōu)勢;還對整個系統(tǒng)在微網(wǎng)和孤島狀態(tài)下進行了不同模式間的切換控制進行了仿真,驗證了該方法的控制效果并搭建平臺。
[Abstract]:Wind energy and solar energy, two common new energy sources, have been widely used now. However, because both wind and solar energy are greatly affected by environmental changes, they have some limitations when they are applied. Since wind and solar energy are naturally complementary, wind and solar systems can take advantage of this natural complementarity, The main content of this paper is to analyze the system principle and scheme of the wind complementary system based on microgrid, and analyze the power balance of the whole system from the point of view of power control. And the algorithm of power control is studied, mainly from the following aspects: firstly, the characteristics of wind, light and battery are modeled and analyzed. Two wind complementary structures based on microgrid are analyzed and compared, and the wind complementary system structure based on DC bus parallel connection is put forward, and the power control based on this structure and micro-source characteristic is provided below. Then the maximum power tracking algorithm of wind energy and solar energy is analyzed, several control algorithms are analyzed and studied, and the advantages and disadvantages of these algorithms are analyzed and compared, and an optimized algorithm structure is proposed. Then, the strategy method of power control is studied. The power balance control based on DC busbar is carried out in this paper. Firstly, the effect of busbar capacitance on DC bus voltage stability to system power balance is analyzed. Then the operation state of each module of the system is analyzed under the microgrid state and the grid-connected state respectively, and the relationship between the operation state and the DC bus voltage and power balance is analyzed. Therefore, based on the DC bus voltage detection, the power balance control of the system can be realized through the switching of each mode. Finally, the system simulation model based on the wind complementary AC / DC bus structure based on microgrid is built by simulink toolbox of matlab, and the maximum power tracking of photovoltaic system and wind power generation is simulated. The improved algorithm is compared with the original advantages, and the switching control between different modes is simulated under the condition of microgrid and isolated island, and the control effect of the method is verified and the platform is built.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM61
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本文編號：1494955