Design of DC-DC converter for a grid connected inverter

2016 7th International Renewable Energy Congress (IREC) Pub Date : 2016-03-22 DOI:10.1109/IREC.2016.7478921

A. Mraoui, L. Hassaine, M. Khelif

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引用次数: 1

Abstract

Currently the use of energy from photovoltaic panels is a reality, and its extensive use will become extremely important in the research for solutions to energy and environmental problems. In this context, MPPT techniques are the most important part to extract the maximum power available. In this study, a DC-DC conversion system according to the boost topology has been designed. System tests were carried out outdoor at different solar radiation. First, the characteristic curve of the photovoltaic panel has been plotted, afterward the MPPT tracking system was connected. The controller communicates tracking data (current, voltage, duty cycle and power) at each step of the algorithm. Sometimes the algorithm deviates from the real maximum power point at first, making a false decision, but comes close thereafter. It is necessary to perform further investigations on this problem. An improvement of the used method is intended to take into account of all the constraints, so it would be possible to provide a simple and reliable system that tracks the maximum power point with minimum circuit and thus minimum consumption of energy.

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并网逆变器DC-DC变换器的设计

目前，光伏板的能源利用已成为现实，其广泛应用将在解决能源和环境问题的研究中变得极其重要。在这种情况下，MPPT技术是提取最大可用功率的最重要部分。本研究设计了一种基于升压拓扑的DC-DC转换系统。系统测试在室外不同的太阳辐射下进行。首先绘制光伏板的特性曲线，然后接入MPPT跟踪系统。控制器在算法的每一步都传递跟踪数据(电流、电压、占空比和功率)。有时，算法一开始会偏离实际的最大功率点，做出错误的决定，但之后会接近。有必要对这个问题进行进一步的调查。对所用方法的改进旨在考虑到所有限制，因此有可能提供一个简单可靠的系统，以最小的电路跟踪最大功率点，从而最小的能量消耗。

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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2016 7th International Renewable Energy Congress (IREC)

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