1、 毕业设计(论文) 家用光伏逆变器认证研究 I 摘要 随着社会的进步和科技的发展,当今世界的主要能源石油资源已日趋枯竭,能源短缺 问题已成为主要问题,寻找一种可替代的能源已迫在眉睫。太阳能作为一种可再生清洁能 源,以其取之不尽,用之不竭的优点,在今后的日常生活中必将占据至关重要的地位。但 是太阳能过于分散,为了更有效地利用太阳能,家用太阳能光伏发电系统必将得到广泛使 用,而逆变器作为太阳能光伏发电系统的核心配件将具有无可比拟的重要作用。欧盟和中 国作为最主要的能源消耗地区,对家用太阳能光伏发电系统都有较为深刻的认识,并且对 光伏系列产品均有较为完善的认证体系。 CQC认证和CE认证作为世界上最
2、主要的认证体系, 对家用光伏逆变器的发展有着不可小觑的影响。因此,研究家用光伏逆变器的 CQC 及 CE 认证显得至关重要。 本文研究了国内外逆变器的研究现状以及 CQC 及 CE 认证的要求,以及 CQC 及 CE 认证 对光伏并网逆变器的 EMC 要求以及两者的不同之处,同时也研究了光伏系统的直流注入问 题,对其产生的原因、原因和处理方法做了较为详细的说明。其次也研究了光伏逆变器的 孤岛效应产生、危害,以及孤岛检测的原理、盲区及方法。最后着重对双向转换电源进行 了 EMC 设计,主要是滤波设计使其符合 CQC 及 CE 认证的要求,其中包括了直流侧滤波器、 交流侧滤波器以及 EMI 滤波器
3、,并对它们的基本原理、种类及优缺点等进行了说明。 关键词:认证; 光伏逆变器;滤波;直流注入;孤岛检测 II Abstract With the development of society and the progress of the science and technology, the world main oil energy resources has become increasingly depleted, energy shortage has become main problems, the urgent need to find an alternative sourc
4、e of energy. Solar energy as a clean and renewable energy, with its inexhaustible, inexhaustible advantages, in the daily life of the future is bound to occupy a very important position. But solar energy are too scattered, in order to make more effective use of solar energy, household solar photovol
5、taic power generation system will get widely used. The inverter as the core parts of the solar photovoltaic power generation system will have an incomparable role. The EU and China as the main energy consumption areas, to household solar photovoltaic power generation system have a more profound unde
6、rstanding of, and of PV series has a relatively perfect system certification. CQC certification and CE certification as the world the main certification system, the development of household photovoltaic inverter has an impact should not be overlooked. Therefore, the research on the CQC and CE authentication of the household photovoltaic inverter is very important. In this paper, the research status at home and abroad of the inverter and the requirements of CQC and CE certification, and CQC and C