户用型光伏并网逆变器硬件系统研究及优化

发布时间：2018-03-14 07:30

本文选题：户用型光伏并网逆变器　切入点：硬件系统　出处：《东华大学》2014年硕士论文　论文类型：学位论文

【摘要】：近些年,由于全球能源的逐渐紧张和环境污染的日益严重,清洁的可再生的太阳能越来越受到人们的重视,同时太阳能的光电转换技术也不断发展到可以大规模的应用水平了。在未来的时间里,光伏发电系统的应用有着良好的发展前景。逆变器作为光伏发电系统的核心能源转换设备,对它的研究和优化具有重要的意义。本文着重于户用型光伏并网逆变器硬件系统的研究及优化,设计了一个性能稳定的1.5kW户用型逆变器硬件系统。其主要包括三个部分,即：Boost模块、功率因数校正(PFC)模块、逆变模块。首先,深入研究Boost电路基本原理,设计系统的Boost电路结构及元器件参数,利用PSpice建立仿真电路,同时搭建实验平台,验证Boost电路升压特性。然后,深入分析PFC模块的原理与作用,设计出PFC电路并确定该选用的元器件,通过实验证明了PFC模块很大程度上提升了系统的工作效率。第三,研究逆变电路的拓扑结构及逆变原理,设计本系统的逆变电路结构,利用Pspice建立仿真电路,搭建实验平台,仿真与实验结果表明逆变电路达到了很好的效果。这三个模块的设计中除了主电路,还要涉及到采样电路、保护电路、驱动电路及供电电路的设计。另外,在系统设计过程充分考虑到EMC优化问题,最大程度上减少电磁干扰对系统带来的影响。最后,对整个硬件系统进行长时间试验,系统运行稳定,取得了较好的实验结果。
[Abstract]:In recent years, due to the global energy shortage and environmental pollution has become increasingly serious, clean renewable solar energy has attracted more and more attention, and the photoelectric conversion technology of solar energy has developed to the level of large-scale application. In the future, the application of photovoltaic power generation system has good prospects for development. As the inverter the core of photovoltaic power generation system energy conversion equipment, is of great significance to study and optimize it.
This paper focuses on the research and optimization of household type photovoltaic grid connected inverter hardware system, designed a stable 1.5kW household type inverter hardware system. It mainly includes three parts, namely: Boost module, power factor correction (PFC) module, inverter module. Firstly, the basic principle of Boost deep into the circuit. The Boost circuit structure and component parameters are designed and built by PSpice simulation circuit, and set up the experimental platform, boosting characteristics of Boost verification. Then, in-depth analysis of the principle and function of the PFC module, PFC circuit design and determine the selection of components, experiments show that the PFC module greatly improves the system's work third. The efficiency of the topology and principle of inverter, inverter circuit, inverter circuit design of this system structure, established by Pspice circuit simulation, the experimental platform is built, the simulation and experimental results Show that the inverter circuit has achieved good results. The design of the three modules in the main circuit, but also relates to the sampling circuit, protection circuit, driving circuit and power supply circuit design. In addition, in the system design process fully taking into account the EMC optimization problem, the maximum extent to reduce the electromagnetic interference on the system. At last bring for a long time, the test of the hardware system, the stable operation of the system, and achieved good results.

【学位授予单位】：东华大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM464

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