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中文摘要：
多个并网逆变器之间的交互影响给电网的稳定运行和电能质量带来负面影响。基于状态空间平均法建立了多并网逆变器传递函数模型，基于所建立的模型和相对增益矩阵原理，提出了一种多个并网逆变器电流控制回路之间交互影响的分析方法，使其能够定量地分析多并网逆变器电流控制回路之间的交互影响和系统频率、控制参数以及电网强度之间的关系。时域仿真和基于相对增益矩阵（relative gain array， RGA）原理分析方法的一致性，验证了该分析方法的有效性。
英文摘要：
Interactive influences among multi grid-connected inverters bring negative effects to stable operation and power quality of power grid. Based on state space averaging method a transfer function model of multi grid-connected inverters is established, and based on the established model and relative gain array （RGA）, a method to analyze the interactive influences among current control circuits of multi grid-connected inverters is put forward to make the quantitative analysis on the interactive influences among current control circuits of multi grid-connected inverters as well as the analysis on the relationship among grid frequency, control parameters and grid strength possible. The effectiveness of the proposed method is validated by the consistency of the results of time-domain simulation with the analysis results of frequency based dynamic relative gain array （DRGA）.
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