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Control strategy of dual-frequency inverter suitable for photovoltaic grid-connection
Author(s): 
Pages: 84-88
Year: Issue:  1
Journal: Electric Power Automation Equipment

Abstract: 研究了一种新型双频并网逆变器,其中一部分工作在低频,采用电流滞环控制,快速跟踪高频单元电流,传递大部分功率;另一部分工作在高频,采用单周控制,改善光伏并网电流的动态性能,使并网电流和电网电压同频同相.以双频逆变器A相为例分析了其在4种不同工作模态下电流、电压的变化,建立了高频单元平均电路模型,通过理论分析,推导出了单周控制策略.利用Matlab/Simulink建立了仿真模型,验证了双频光伏并网逆...
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