Power control of single-phase voltage source inverter for grid-connected photovoltaic systems
Power control of single-phase voltage source inverter for grid-connected photovoltaic systems
复制标题
并网光伏系统单相电压源逆变器功率控制
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
K. Higuchi
中科院分区：
文献类型：
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作者：
S. Samerchur;S. Premrudeepreechacharn;Y. Kumsuwun;K. Higuchi
本文对并网光伏系统中单相电压源逆变器的有功功率和无功功率控制进行了设计和分析。该方法基于功率矢量控制，通过对有功和无功电流分量进行解耦控制，将有功和无功功率馈送电网。本研究的目的是控制电网的功率因数，提高光伏发电向交变电网输电的整体效率，减少VSI的相电流畸变。文中详细建立了系统的数学模型。讨论了用MATLAB/Simulink软件对1kW并网220V， 50hz的光伏系统进行仿真的结果。仿真结果表明，电网输入功率因数基本一致，减小了系统相电流畸变，各种功率条件下的总谐波畸变在5%以内。
This paper presents the design and analysis of both the active and reactive power control of a single-phase voltage source inverter (VSI) for grid-connected photovoltaic (PV) system. The proposed method is based on vector control of power by decoupling control of the active and reactive current components to feed the active and reactive power to the grid. The aim of this research is to control power factor at grid, to improve overall efficiency of transferring power of PV to alternate current power conversion into the grid, and to decrease phase current distortion of VSI. In this work, mathematical model of system has presented in details. The results of simulations of PV system 1kW connected to grid 220V, 50 Hz using MATLAB/Simulink software are also discussed. Simulation results have shown that the grid input power factor is nearly unity, and the distorting of phase current of the proposed system has been reduced, causing the total harmonic distortion for various power conditions falls within 5%.