Large-scale PV systems with energy storage utilizing high-gain DC/DC converters

2014 IEEE International Conference on Industrial Technology (ICIT) Pub Date : 2014-09-11 DOI:10.1109/ICIT.2014.6894988

Hyun-Chil Choi, M. Ciobotaru, V. Agelidis

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引用次数: 1

Abstract

The trend associated with the ever increasing size of grid-connected photovoltaic (PV) systems necessitates PV system configurations with higher power rating power processing converters and interconnection at a higher voltage level at the point of common coupling (PCC). Moreover, the inherent intermittency of the solar irradiation greatly affects both transient- and steady-state operation of these ever larger PV systems. This paper proposes a solution dealing with challenges of the large-scale PV system. The paper introduces a multistring PV system configuration based on a high-gain DC/DC converter and energy storage system (ESS). The interleaved structure of the high-gain DC/DC converter can easily handle the challenges regarding the power rating of converters and the requirement of higher voltage at PCC. Moreover, the ESS suppresses the power fluctuation of PV arrays and balances the difference between generated PV power and peak load demand. The simulation results of proposed system are presented to validate the performance of transient and steady state.

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利用高增益DC/DC转换器的大型储能光伏系统

随着并网光伏(PV)系统规模的不断扩大，光伏系统必须配置更高额定功率的电源处理转换器，并在公共耦合(PCC)点上以更高的电压水平互连。此外，太阳辐射固有的间歇性极大地影响了这些越来越大的光伏系统的瞬态和稳态运行。针对大型光伏系统的挑战，提出了一种解决方案。介绍了一种基于高增益DC/DC变换器和储能系统(ESS)的多串光伏系统结构。高增益DC/DC变换器的交错结构可以很容易地解决变换器的额定功率和PCC对更高电压的要求。此外，ESS还可以抑制光伏阵列的功率波动，平衡光伏发电功率与峰值负荷需求之间的差异。仿真结果验证了系统的暂态和稳态性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 IEEE International Conference on Industrial Technology (ICIT)

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