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负荷按容分配的无线并联逆变系统收敛性分析

, PP. 90-98

Keywords: 无线并联,微电网,下垂控制,收敛性分析,按容分配

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Abstract:

对于非同等功率等级的逆变器无线并联系统而言,因为均分系统负荷可能导致小容量逆变器无法工作,所以必须让负荷按照正比于逆变器模块容量的方式实现分配。围绕下垂控制原理,通过对输出电压幅值和频率进行收敛性分析,推导出逆变负荷按容分配的充分条件,这一充分条件对下垂控制系数的确定具有很好的指导作用。此外,通过引入虚拟阻抗法和双环调节器,搭建了由两台不同容量的逆变器组成的微电网系统。最后通过仿真和实验验证了该理论分析的有效性。

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