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P & O MPPT control strategy combining method based on a fixed voltage method
Author(s): 
Pages: 13-15
Year: Issue:  12
Journal: Automation & Instrumentation

Keyword:  Photovoltaic arrayMPPTConstant voltage methodVariable step perturb-observe method;
Abstract: 对光伏发电控制系统提出了一种新型的最大功率点跟踪(MPPT)控制方法.即在外界环境或负载突变时,先采用固定电压法将光伏阵列的工作点调整到最大功率点附近,以保证跟踪的快速性;并且引入新型的扰动观察法,对最大功率点的稳态特性进行优化,可有效减小光伏阵列的输出功率在最大功率点的振荡现象.通过仿真验证了上述方法的有效性.
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