5KW 家用光伏并网发电系统设计摘 要我国是发展中大国，工业发展与国民用电对能源的依赖性非常大，太阳能不仅清洁无污染而且是可无限再生的一种能源，对太阳能的利用推动了光伏发电产业的发展，小型的家用光伏发电能直接惠利于民在今年来受到广泛关注。本文设计了装机容量为 5KW 的光伏并网发电系统，足以满足一般家庭的生活用电。针对光伏发电产业的现状和前景进行了简单介绍，对光伏并网发电系统的各个模块进行了设计。包括光伏电池的原理与电池组件的设计、主电路设计、控制系统设计，主电路是由 DC/DC 变换部分和 DC/AC 变换部分组成，DC/DC 包括电源电路、稳压电路，用于提升光伏电池的输出电压并使之稳定不变； DC/AC包括逆变电路及其驱动信号发生电路；控制系统包含主控芯片、控制电路，控制策略包含最大功率点跟踪算法、spwm 驱动信号产生等。该设计简单可靠，经济实惠，清洁无污染。关键词： 光伏并网，最大功率点跟踪控制，单相全桥逆变电路I5KW home photovoltaic grid-connected power generation system designabstractChina is a large developing country. Industrial development and national electricity are very dependent on energy. Solar energy is a clean and renewable energy source. The use of solar energy has promoted the development of the photovoltaic power generation industry. Small domestic photovoltaic power generation can directly benefit Beneficial to the people this year has received widespread attention. This article designed a photovoltaic grid-connected power generation system with an installed capacity of 5KW, which is enough to meet the daily electricity consumption of ordinary families.The current situation and prospect of the photovoltaic power generation industry are briefly introduced, and the modules of the photovoltaic grid-connected power generation system are designed. Including the principles of photovoltaic cells and battery module design, main circuit design, and control system design, the main circuit is composed of two parts: DC / DC conversion a...
