（毕业设计论文）《1kW光伏户用正弦逆变电源设计》.doc

摘 要 当前世界能源短缺以及环境问题日益严重，这些问题迫使人们改变能源结构，寻找新的替代能源。可再生洁净能源的开发愈来愈受到重视，太阳能以其经济、清洁等优点倍受青睐，其开发利用技术亦得以迅速发展，而光伏发电成为其中重要的研究领域。本文针对独立工作的光伏发电逆变电源的DC－DC变换器、DC－AC变换器，主要围绕升压斩波电路、全桥逆变展开研究，对DC－DC部分主电路的设计、DC－AC部分主电路的设计作了详细叙述。分析了基于升压斩波电路的拓扑结构和工作原理、全桥逆变电路的拓扑结构和工作原理，详细介绍了高频变压器的设计及主电路元器件的选取、滤波器参数的估算。 关键词：光伏发电，升压斩波电路拓扑，全桥逆变电路拓扑，控制电路和驱动电路的设 ABSTRACT Shortage of energy sources and pollution of environment in the world are becoming more and more serious . The delicate problems compel scientists to search for new energy sources that can substitute conventional ones. Therefore , developing and using renewable and clean energy sources such as solar energy which is economical and nonpolluting are taken into account seriously. All sorts of technologies of utilizing solar energy including photovoltaic generation have made great strides. In this paper, the work of the independent photovoltaic power inverter DC－DC converters, DC－AC converter ,mainly around the boost chopper circuit ,full-bridge inverter study ,the DC－DC part of the main circuit design , DC－AC part of the main circuit design was described in detail. Then based on the analysis of step-up chopper circuit topology and the principle of full-bridge inverter circuit topology and principle ,described in detail the design of high-frequency transformers and main circuit components selection ,filter parameters of the estimates. Key words: Photovoltaic power generation ,boost chopper circuit topology ,full-bridge inverter circuit topology ,control circuits and drive circuit design. 目 录 摘 要 - 1 - ABSTRACT - 2 - 1绪论 - 5 - 1.1背景 - 5 - 1.2太阳能利用的优势 - 5 - 1.3 光伏正弦逆变电源 - 5 - 1.3.1 研究意义 - 5 - 1.3.2 国内、外的现状及发展趋势 - 6 - 1.3.3光伏发电系统对逆变电源的要求 - 6 - 1.3.4 光伏逆变电源存在的问题 - 7 - 1.4课题主要的研究方向及其内容 - 7 - 1.4.1主要研究的方向 - 7 - 1.4.2 主要研究的内容 - 7 - 1.4.3 逆变器的性能指标 - 7 - 1.5 光伏发电控制系统 - 7 - 2太阳能光伏电池模型 - 8 - 2.1太阳能电池的理论数学模型 - 8 - 2.2光伏电池工程用数学模型 - 8 - 3光伏户用逆变电源主电路拓扑结构设计 - 10 - 3.1 逆变器DC－DC部分主电路拓扑 - 11 - 3.1.1升压斩波电路的基本原理 - 11 - 3.1.2 DC－DC功率器件的选取 - 12 - 3.1.3 DC－DC二极管的选取 -