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Received:July 03, 2014
Received:July 03, 2014
中文摘要: 基于Matlab/Simulink仿真建立了两级式三相光伏并网系统,以研究最大功率点跟踪(MPPT)控制策略.前级DC/DC变换器采用扰动观察法实现MPPT,后级逆变电路采取电压外环、电流内环的双闭环PI控制,以稳定直流母线电压,实现网侧电流的跟踪控制.仿真结果表明,采用的MPPT控制策略具有良好的动态响应性能,且能较好地稳定直流母线电压.
Abstract:A two-stage three-phase photovoltaic grid-connected simulation system is built based on Matlab/Simulink to study the maximum power point tracking(MPPT)strategy.The DC/DC converter adopts the perturbation method of observation to realize the MPPT control.The DC/AC inverter uses the voltage outer loop and current inner loop of the so-called double closed-loop PI control to stabilize the DC bus voltage and track the grid side current.The simulation results show that the adopted MPPT control method has a good dynamic response and is capable of stabilizing the DC bus voltage.
keywords: maximum power point tracking perturbation method of observation double closed-loop PI control
文章编号：20140502 中图分类号： 文献标志码：
基金项目:国家自然科学基金(51207088);上海科学技术委员会科研计划项目(13DZ2251900);上海电力学院科创项目(K-2012-003)
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