| 光伏发电系统最大功率跟踪的稳定性研究 |
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| 引用本文： | 黄明玖,罗皓泽,苏建徽.光伏发电系统最大功率跟踪的稳定性研究[J].高压电器,2012,48(8):71-75. |
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| 作者姓名： | 黄明玖 罗皓泽 苏建徽 |
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| 作者单位： | 1. 安徽颐和新能源科技股份有限公司,池州,230000
2. 合肥工业大学教育部光伏系统工程研究中心,合肥,230009 |
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| 摘 要： | 由于光伏阵列的IV特性存在强烈的非线性,光伏系统的最大功率跟踪工作电压可能处于不同的非线性区段,系统调节器的不合理设计,可能造成系统的不稳定甚至崩溃。笔者针对光伏系统存在的不稳定区域问题,通过建立系统状态方程和传递函数,分析系统在MPPT控制中出现的不稳定现象和原因,并进行了仿真和实验验证,确定了影响因素。通过对系统控制参数的正确调节以及母线电容的适当选择可以增加系统的稳定性。
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| 关 键 词： | 光伏电池 非线性系统 最大功率跟踪 动态稳定性 |
Research on the Stability of MPPT in Photovoltaic System |
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| HUANG Ming-jiu
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LUO Hao-ze
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SU Jian-hui.Research on the Stability of MPPT in Photovoltaic System[J].High Voltage Apparatus,2012,48(8):71-75. |
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| Authors: | HUANG Ming-jiu LUO Hao-ze SU Jian-hui |
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| Affiliation: | 1.Anhui EHE New Energy Tech.Co.,Ltd.,Chizhou 230000,China;2.Research Center for Photovoltaic System Engineering,Ministry of Education,Hefei University of Technology,Heifei 230009,China) |
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| Abstract: | Strong nonlinear IV characteristics existing in PV array may cause the maximum power point tracking voltage of photovoltaic system in different nonlinear section.The irrational design of the system controller may cause system instability or even collapse.This paper aims at the unstable region in photovoltaic system to analyze the phenomenon of instability in the MPPT control through establishing system state equation and transfer function.The influencing parameters are determined via simulation and experiment.It is concluded that the stability of the system can be enhanced by adjusting the system control parameters and properly selecting bus capacitance. |
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| Keywords: | photovoltaic array nonlinear system MPPT dynamic stability |
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