Active Damping of Multi-paralleled Inverters with LCL Filters Based on Virtual Harmonic Resistance Control Strategy

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• 英文论文题名：Active Damping of Multi-paralleled Inverters with LCL Filters Based on Virtual Harmonic Resistance Control Strategy
• 论文作者：Laijun Chen ; Lifeng Li ; Tianwen Zheng ; Chunlai Li ; Yan Guo ; Shengwei Mei
• 英文论文作者：Laijun Chen ; Lifeng Li ; Tianwen Zheng ; Chunlai Li ; Yan Guo ; Shengwei Mei ; Qinghai Key Lab of Efficient Utilization of Clean Energy(New Energy Photovoltaic Industry Research Center ; Qinghai University) ; State Key Lab of Power System ; Department of Electrical Engineering ; Tsinghua University ; Key Laboratory of Photovoltaic Power Generation and Grid-connected Technology Qinghai Electrical Power Research Institute ; Qinghai Electric Power Corporation
• 年：2017
• 作者机构：Qinghai Key Lab of Efficient Utilization of Clean Energy(New Energy Photovoltaic Industry Research Center,Qinghai University);State Key Lab of Power System,Department of Electrical Engineering,Tsinghua University;Key Laboratory of Photovoltaic Power Generation and Grid-connected Technology Qinghai Electrical Power Research Institute,Qinghai Electric Power Corporation;
• 英文论文关键词：Inverters ; LCL filter ; Resonance ; Virtual Resistance ; Grid-interactive
• 会议召开时间：2017-07-26
• 会议录名称：第36届中国控制会议论文集（A）
• 英文会议录名称：Proceedings of the 36th Chinese Control Conference（A）
• 语种：英文
• 分类号：TM464;TN713
• 学会代码：KZLL
• 会议名称：第36届中国控制会议
• 会议地点：中国辽宁大连
• 主办单位：中国自动化学会控制理论专业委员会
• 学会名称：中国自动化学会控制理论专业委员会
• 页数：6
• 文件大小：1011k
• 原文格式：D
• 会议级别：全国

摘要

With the development and utilization of renewable energy,power electronic inverters are becoming more and more widely employed as the interfaces of renewable energy sources in modern power systems.However,because of the LCL filter,parallel-inverter-based grid-interactive system may experience serious resonance problems at different frequencies.This paper first develops a mathematical model of parallel-inverter-based grid-interactive system.The resonance characteristic can then be investigated with the introduced model.To improve the power quality,a virtual-harmonic-resistance-based active damping method is proposed.Unlike the traditional method,a virtual resistance is in parallel with the grid-side inductor of LCL filter in the proposed method.And with a harmonic detector,the influence on fundamental wave control is greatly reduced.Meanwhile,the costs of the control system can be decreased because there is no need to involve any additional measurements.Finally,simulation results on the platform of Matlab/Simulink are provided to validate the correctness of the developed resonance modeling and active damping method.
With the development and utilization of renewable energy,power electronic inverters are becoming more and more widely employed as the interfaces of renewable energy sources in modern power systems.However,because of the LCL filter,parallel-inverter-based grid-interactive system may experience serious resonance problems at different frequencies.This paper first develops a mathematical model of parallel-inverter-based grid-interactive system.The resonance characteristic can then be investigated with the introduced model.To improve the power quality,a virtual-harmonic-resistance-based active damping method is proposed.Unlike the traditional method,a virtual resistance is in parallel with the grid-side inductor of LCL filter in the proposed method.And with a harmonic detector,the influence on fundamental wave control is greatly reduced.Meanwhile,the costs of the control system can be decreased because there is no need to involve any additional measurements.Finally,simulation results on the platform of Matlab/Simulink are provided to validate the correctness of the developed resonance modeling and active damping method.

引文

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