| 基于改进MPPT算法的光伏并网控制策略研究 |
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| 引用本文： | 程琼,余露. 基于改进MPPT算法的光伏并网控制策略研究[J]. 湖北工业大学学报, 2011, 26(3): 50-53 |
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| 作者姓名： | 程琼 余露 |
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| 作者单位： | 湖北工业大学电气与电子工程学院,湖北武汉,430068 |
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| 基金项目： | 国家自然科学基金资助项目，武汉市科技局资助项目，湖北省自然基金资助项目 |
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| 摘 要： | 研究了光伏并网发电系统的控制策略,并进行了一定改进.结合恒定电压跟踪法与增量电导法两种控制方法,提出了一种改进的最大功率点跟踪（MPPT）算法.当外界环境变化时,通过直接控制直流斩波器开关占空比,以达到快速准确的功率跟踪效果.系统通过双闭环并网控制,使并网逆变器在保持并网电流质量的同时更好地控制直流电压.在MATLAB/SIMULINK软件平台上搭建光伏并网发电系统的仿真模型,并验证了改进的MPPT算法及并网控制策略的有效性.
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| 关 键 词： | 光伏发电系统 最大功率点跟踪 并网控制 MATLAB仿真 |
Research Of Photovoltaic Grid-connected Control Strategy Based on Improved MPPT method |
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| CHENG Qiong,YU Lu. Research Of Photovoltaic Grid-connected Control Strategy Based on Improved MPPT method[J]. Journal of Hubei University of Technology, 2011, 26(3): 50-53 |
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| Authors: | CHENG Qiong YU Lu |
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| Affiliation: | (School of Electrical & Electronic Engin.,Hubei Univ.of Tech.,Wuhan 430068,China) |
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| Abstract: | The photovoltaic grid-connected generation system is studied and improved.This article combined the advantages of two control methods,which integrates constant voltage tracking(CVT) and increment conductance tracking(INC),and putforward an improved MPPT method.When the external environment changed,the duty cycle of DC chopper is directly controlled to achieve the optimum control results.Trough the grid-connected control of double feedback,the grid-connected inverter can both ensure the current quality and stabilize the DC voltage.A simulation model of photovoltaic grid-connected generation system is built with MATLAB/SIMULINK to vetify the validity of improved MPPT method and grid-connected control strategy. |
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| Keywords: | photovoltaic generation system maximum power point tracking(MPPT) grid-connected control MATLAB simulation |
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