单相并网光伏系统升压降压的小信号建模

Mauricio Taconelli, P. F. Silva, R. Machado, Amilcar Flamarion Querubini Gonçalves
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引用次数: 0

摘要

在过去的几十年里,传统电网经历了一个转型过程,其中发电源的分散化似乎起着根本性的作用。在此背景下,太阳能光伏电源的日益普及为开发更高效的逆变器,特别是无变压器逆变器和微型逆变器的拓扑结构开辟了空间。因此,在本文中,我们将提出连接到展开电路的升压-降压转换器的小信号分析,用于由光伏阵列供电的并网单相应用。根据变换器的工作原理,考虑其平均状态空间模型的特性,给出了电路结构和数学建模。最后,基于数学模型对寄生元件的影响进行了分析,并给出了逆变器动力学仿真结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Small-signal modeling of the Boost-Buck for single-phase grid connected photovoltaic systems
In the last few decades, the traditional electrical power grid has undergone by a transformation process in which the decentralization of generation sources seems to playa fundamental role. In this context, the growing presence of solar photovoltaic sources has opened space for the development of more efficient inverters, in particular, the topologies of transformerless inverters and microinverters. Thus, in this paper we will propose the small-signal analysis of a Boost-Buck converter connected to an unfolding circuit for grid-tied single phase applications powered by a photovoltaic arrays. According to the principle operation, the circuit configuration and mathematical modeling will be presented considering the properties of the average state-space model of the converter. Finally, analyzes are performed on the impact of parasitic elements based on the mathematical model, as well as results of simulations of the inverter dynamics will be presented.
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