引入空载电压增益补偿的微网非同型逆变器协同控制  

Cooperative Control of Microgrid Non-Identical Inverters by Introducing No-Load Voltage Gain Compensation

作　　者：林燎源 戴宇杰 朱铠 项雷军[1] LIN Liaoyuan;DAI Yujie;ZHU Kai;XIANG Leijun(College of Information Science and Engineering,Huaqiao University,Xiamen 361021,China)

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2022年第5期677-684,共8页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金青年科学基金资助项目(52007068);福建省自然科学基金资助项目(2019J05089)。

摘　　要：通过特性分析,提出非同型逆变器存在空载电压增益和等效输出阻抗的失配问题.推导阻性下垂控制下非同型逆变器并联的功率均分条件,进而提出一种引入空载电压增益补偿的改进下垂控制策略和虚拟阻抗法,提高非同型逆变器空载电压增益和等效输出阻抗的匹配程度.仿真结果表明:在非同型逆变器协同控制中,文中方法能够有效地提高系统的功率均分性能.Through characteristics analysis,the mismatch problem between no-load voltage gain and equivalent output impedance of non-identical inverters is proposed.The power equal sharing conditions of paralleled non-identical inverters under resistive droop control are derived,furthermore,an improved droop control strategy and virtual impedance method is proposed by introducing no-load voltage gain compensation to enhance the matching degree of no-load voltage gain and equivalent output impedance of non-identical inverters.The simulation results show that the proposed method can effectively improve the power equal sharing performance of the system in the cooperative control of non-identical inverters.

关 键 词：微网 逆变器 下垂控制 虚拟阻抗 空载电压增益 

分 类 号：TM921[电气工程—电力电子与电力传动]