本文選題：單相離網(wǎng)光伏逆變器　切入點(diǎn)：BOOST升壓電路　出處：《南昌航空大學(xué)》2014年碩士論文

【摘要】：人類社會(huì)隨著科技的進(jìn)步正在飛速的發(fā)展，與此同時(shí)對能源的需求量逐漸增多，而當(dāng)前全球所儲(chǔ)存的能源正越加短缺，而且造成的一系列壞的影響正在威脅著人們的生存方式。于是新型可持續(xù)綠色能源將是一個(gè)前景廣闊的研究方向。太陽能正是屬于其中，光伏發(fā)電由此而生，它以清潔無污染、取之不盡用之不竭的巨大儲(chǔ)存、資源普遍而無地域限制等優(yōu)點(diǎn)而成為當(dāng)前研究最為廣泛的綠色能源之一。本課題以單相離網(wǎng)光伏逆變器為研究對象，對其進(jìn)行了研究與設(shè)計(jì)。 本文的主要研究內(nèi)容有： 1、分析對比了光伏逆變器的主電路的各種拓?fù)浣Y(jié)構(gòu)，，主要分析研究了BOOST升壓電路和全橋逆變電路。并同時(shí)分析對比了了逆變器的多種調(diào)制方式和控制策略，最終采取雙極性SPWM調(diào)制和PI+重復(fù)控制策略。 2、在對各種拓?fù)浞治隽说幕A(chǔ)上對系統(tǒng)主電路進(jìn)行建模分析，對逆變器的前級(jí)升壓電路和后級(jí)逆變電路分別作了詳細(xì)的建模分析，對濾波器進(jìn)行了設(shè)計(jì)。 3、在理論分析的基礎(chǔ)上，設(shè)計(jì)了2.5kVA單相離網(wǎng)逆變器樣機(jī)，對樣機(jī)的各個(gè)模塊的硬件進(jìn)行了詳細(xì)分析與設(shè)計(jì)，包括了DC/DC直流變換器與DC/AC逆變電路以及系統(tǒng)其他關(guān)鍵硬件部分，緩沖電路、驅(qū)動(dòng)電路、采樣電路等。并對系統(tǒng)幾個(gè)主要功率器件進(jìn)行了損耗分析。 4、最后對樣機(jī)進(jìn)行了實(shí)驗(yàn)驗(yàn)證，通過相關(guān)測試儀器觀測不同的負(fù)載條件下各個(gè)電壓和電流波形來驗(yàn)證實(shí)驗(yàn)結(jié)果。實(shí)驗(yàn)表明此光伏逆變器設(shè)計(jì)基本達(dá)到預(yù)期目標(biāo)。
[Abstract]:With the progress of science and technology, the human society is developing rapidly. At the same time, the demand for energy is increasing, and the energy stored in the world is increasingly short. And a series of bad effects are threatening people's way of life. So new sustainable green energy will be a promising research direction. Solar energy is one of them, and photovoltaic power generation comes from it, which is clean and pollution-free. It has become one of the most widely studied green energy sources due to the inexhaustible huge storage and the universal resources without geographical restriction. This paper takes single-phase off-grid photovoltaic inverter as the research object and carries on the research and the design to it. The main contents of this paper are as follows:. 1. The main circuit topology of photovoltaic inverter is analyzed and compared. The BOOST boost circuit and the full-bridge inverter circuit are analyzed and studied. At the same time, various modulation modes and control strategies of the inverter are analyzed and compared. Finally, bipolar SPWM modulation and Pi repetitive control strategy are adopted. 2. Based on the analysis of various topologies, the main circuit of the system is modeled and analyzed. The former boost circuit and the back stage inverter circuit of the inverter are modeled and analyzed in detail, and the filter is designed. 3. On the basis of theoretical analysis, the prototype of 2.5kVA single-phase off-grid inverter is designed. The hardware of each module of the prototype is analyzed and designed in detail, including DC/DC DC converter, DC/AC inverter circuit and other key hardware parts of the system. Buffer circuit, drive circuit, sampling circuit and so on. Finally, the experimental results of the prototype are verified by measuring the voltage and current waveforms under different load conditions. The experimental results show that the design of the photovoltaic inverter has basically reached the expected goal.
【學(xué)位授予單位】：南昌航空大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM464

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 孫朝暉;吳浩偉;方斌;耿攀;;采用PID和重復(fù)控制的逆變器波形控制策略[J];船電技術(shù);2010年02期

2 周雪松;宋代春;馬幼捷;郭潤睿;程德樹;;光伏并網(wǎng)逆變器的控制策略[J];華東電力;2010年01期

本文編號(hào)：1689709