本文選題：失配 + PSIM�。� 參考：《揚(yáng)州大學(xué)》2014年碩士論文

【摘要】：太陽(yáng)能光伏發(fā)電作為緩解能源緊張的新途徑,在世界范圍內(nèi)得到了快速地發(fā)展。而隨著太陽(yáng)能發(fā)電的普及,失配的問(wèn)題也凸顯出來(lái)。對(duì)于傳統(tǒng)型戶用光伏發(fā)電系統(tǒng),當(dāng)太陽(yáng)能電池組件陣列中出現(xiàn)失配問(wèn)題時(shí),將會(huì)導(dǎo)致電池組件陣列最大功率的誤跟蹤從而使整個(gè)系統(tǒng)輸出功率大幅下降。本課題針對(duì)這個(gè)問(wèn)題,提出了一種改進(jìn)型系統(tǒng),其理念是在傳統(tǒng)型系統(tǒng)的基礎(chǔ)上,為每塊太陽(yáng)能電池組件配備一塊具有MPPT功能的DC-DC電路來(lái)保證失配情況下的最大功率輸出,其優(yōu)點(diǎn)為改造成本低,失配情況下提高的發(fā)電量高。 本課題所研究?jī)?nèi)容如下： 1、利用PSIM仿真軟件對(duì)傳統(tǒng)型戶用光伏發(fā)電系統(tǒng)的失配問(wèn)題進(jìn)行了研究。首先對(duì)傳統(tǒng)型系統(tǒng)進(jìn)行了電路設(shè)計(jì)和參數(shù)的計(jì)算,然后根據(jù)其系統(tǒng)結(jié)構(gòu)搭建了PSIM仿真模型。通過(guò)仿真在部分陰影遮蓋下電池組件陣列的電壓輸出,驗(yàn)證了失配時(shí)最大功率點(diǎn)的誤跟蹤；通過(guò)仿真電池組件在不同陰影面積下的功率輸出,驗(yàn)證了失配時(shí)的功率損失以及其與失配程度的關(guān)系。2、針對(duì)失配問(wèn)題,提出了一種改進(jìn)型系統(tǒng)結(jié)構(gòu),根據(jù)該結(jié)構(gòu)所用DC-DC變換器的不同分為兩個(gè)改進(jìn)方案,即采用boost變換器和buck變換器。首先對(duì)改進(jìn)型系統(tǒng)進(jìn)行了電路設(shè)計(jì)和參數(shù)的計(jì)算,然后利用PSIM軟件對(duì)兩種改進(jìn)方案進(jìn)行了仿真。通過(guò)仿真失配情況下改進(jìn)型系統(tǒng)的功率輸出,驗(yàn)證理論的可行性。經(jīng)過(guò)與傳統(tǒng)型系統(tǒng)的對(duì)比分析,兩個(gè)改進(jìn)方案的輸出功率分別提高了108.2%和112.2%。 3、制作了boost變換器、buck變換器等硬件實(shí)物,利用光伏組件、電子負(fù)載等設(shè)備搭建了傳統(tǒng)型系統(tǒng)以及改進(jìn)型系統(tǒng)的試驗(yàn)硬件。在部分陰影遮蓋的失配情況下,分別針對(duì)傳統(tǒng)型系統(tǒng)和改進(jìn)型系統(tǒng)的最大功率點(diǎn)電壓、輸出功率、一天內(nèi)的發(fā)電量等重要數(shù)據(jù)參數(shù)進(jìn)行了試驗(yàn)。經(jīng)過(guò)對(duì)試驗(yàn)數(shù)據(jù)地具體分析,在考慮變換器功率損耗的情況下,兩個(gè)改進(jìn)方案一天中的發(fā)電量分別比傳統(tǒng)型系統(tǒng)提高了68.3%和72.2%。最終驗(yàn)證了改進(jìn)方案在解決失配問(wèn)題上的優(yōu)勢(shì)。
[Abstract]:Solar photovoltaic power generation as a new way to ease energy tension, in the world has been rapid development. With the popularity of solar power generation, the mismatch problem also highlights. For the traditional household photovoltaic power generation system, when there is a mismatch problem in the solar cell array, it will lead to the mistracking of the maximum power of the battery module array, thus greatly reducing the output power of the whole system. In order to solve this problem, an improved system is proposed in this paper. The idea is that each solar cell module is equipped with a DC-DC circuit with MPPT function to ensure the maximum power output in the case of mismatch on the basis of the traditional system. It has the advantages of low cost and high power generation under mismatch. The contents of this study are as follows: 1. The mismatch problem of traditional household photovoltaic power generation system is studied by PSIM simulation software. Firstly, the circuit design and parameter calculation of the traditional system are carried out, and then the PSIM simulation model is built according to the system structure. By simulating the voltage output of the battery assembly array under partial shading, the error tracking of the maximum power point when mismatched is verified, and the power output of the battery component under different shadow areas is simulated. The power loss and the relationship between power loss and mismatch degree are verified. Aiming at the mismatch problem, an improved system structure is proposed, which can be divided into two improved schemes according to the difference of the DC-DC converter used in the structure. Boost converter and buck converter are adopted. First, the circuit design and parameter calculation of the improved system are carried out, and then the two improved schemes are simulated by using PSIM software. The feasibility of the theory is verified by simulating the power output of the improved system under the condition of mismatch. Compared with the traditional system, the output power of the two improved schemes is increased by 108.2% and 112.22respectively. 3. The hardware of boost converter and buck converter is made, and the traditional system and the improved system are built by using photovoltaic module, electronic load and so on. In the case of partial shading mismatch, the important data parameters such as the maximum power point voltage, the output power and the power generation in one day of the traditional system and the improved system are tested respectively. Through the detailed analysis of the experimental data, considering the power loss of the converter, the power generation of the two improved schemes in one day is 68.3% and 72.2% higher than that of the traditional system, respectively. Finally, the advantages of the improved scheme in solving the mismatch problem are verified.
【學(xué)位授予單位】：揚(yáng)州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM914.4;TM615

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉俊杰;張新燕;;基于PSIM的光伏模塊建模與電氣特性仿真[J];半導(dǎo)體光電;2011年02期

2 程軍照;李澍森;張騰飛;;多路并網(wǎng)光伏發(fā)電系統(tǒng)的仿真與分析[J];電力系統(tǒng)及其自動(dòng)化學(xué)報(bào);2009年04期

3 辛頌旭;;國(guó)外分布式光伏發(fā)展經(jīng)驗(yàn)及對(duì)我國(guó)的啟示[J];能源與環(huán)境;2013年06期

4 曹瑩;;家用太陽(yáng)能光伏發(fā)電系統(tǒng)設(shè)計(jì)[J];機(jī)電工程;2011年01期

5 何人望;邱萬(wàn)英;吳迅;齊艷;謝偉;;基于PSIM的新型擾動(dòng)觀察法的MPPT仿真研究[J];電力系統(tǒng)保護(hù)與控制;2012年07期

6 劉慧芬;史占中;;我國(guó)發(fā)展太陽(yáng)能產(chǎn)業(yè)政策芻議[J];科學(xué)技術(shù)與工程;2008年22期

7 葛強(qiáng);李丹萍;談磊;森武昭;;不同方位角太陽(yáng)能電池陣列輸出特性的試驗(yàn)[J];可再生能源;2010年06期

8 侯樹(shù)文;李雪;李海濱;胡富靜;郭姍;;基于改進(jìn)微擾觀察法的最大功率跟蹤系統(tǒng)的實(shí)現(xiàn)[J];華北水利水電學(xué)院學(xué)報(bào);2012年05期

9 高文祥;王明渝;王立健;劉洋;;光伏微型逆變器研究綜述[J];電力系統(tǒng)保護(hù)與控制;2012年21期

10 車(chē)福來(lái);張曉光;;一種新型光伏微型逆變器系統(tǒng)的研究[J];電工電氣;2013年02期

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