逆变器侧电流反馈的LCL型三相光伏并网逆变器解耦控制
为了实现LCL型三相光伏并网逆变器dq轴的解耦控制,同时提高系统的动态响应速度,在同步旋转坐标系下,提出一种适用于逆变器侧电流反馈的前馈解耦控制策略.并在电压外环中引入光伏阵列功率前馈、电流内环中引入电网电压前馈.视各耦合项为扰动,采用闭环传递函数的求解方法以获取实现解耦控制的前馈系数,同时分析了滤波器参数在发生变化时其对dq轴解耦效果的影响.通过Matlab建立系统仿真模型,仿真结果表明:所提解耦控制策略使LCL型三相光伏并网逆变器不仅实现了dq轴的解耦控制,而且在保证强鲁棒性及高入网电流质量条件下具有良好的动、静态性能....
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| Published in | 电力系统保护与控制 Vol. 46; no. 9; pp. 122 - 128 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
兰州交通大学自动化与电气工程学院,甘肃 兰州 730070
01.05.2018
光电技术与智能控制教育部重点实验室(兰州交通大学),甘肃 兰州 730070%兰州交通大学自动化与电气工程学院,甘肃 兰州,730070 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-3415 |
| DOI | 10.7667/PSPC170656 |
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| Abstract | 为了实现LCL型三相光伏并网逆变器dq轴的解耦控制,同时提高系统的动态响应速度,在同步旋转坐标系下,提出一种适用于逆变器侧电流反馈的前馈解耦控制策略.并在电压外环中引入光伏阵列功率前馈、电流内环中引入电网电压前馈.视各耦合项为扰动,采用闭环传递函数的求解方法以获取实现解耦控制的前馈系数,同时分析了滤波器参数在发生变化时其对dq轴解耦效果的影响.通过Matlab建立系统仿真模型,仿真结果表明:所提解耦控制策略使LCL型三相光伏并网逆变器不仅实现了dq轴的解耦控制,而且在保证强鲁棒性及高入网电流质量条件下具有良好的动、静态性能. |
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| AbstractList | 为了实现LCL型三相光伏并网逆变器dq轴的解耦控制,同时提高系统的动态响应速度,在同步旋转坐标系下,提出一种适用于逆变器侧电流反馈的前馈解耦控制策略.并在电压外环中引入光伏阵列功率前馈、电流内环中引入电网电压前馈.视各耦合项为扰动,采用闭环传递函数的求解方法以获取实现解耦控制的前馈系数,同时分析了滤波器参数在发生变化时其对dq轴解耦效果的影响.通过Matlab建立系统仿真模型,仿真结果表明:所提解耦控制策略使LCL型三相光伏并网逆变器不仅实现了dq轴的解耦控制,而且在保证强鲁棒性及高入网电流质量条件下具有良好的动、静态性能. |
| Abstract_FL | In order to realize the decoupling control of dq axis for three-phase PV grid-connected system and speed up the system dynamic response speed, a decoulpling control strategy is proposed in the synchronous rotating reference frame. Meanwhile, PV array power feed-forward and full grid-voltage feed-forward control are respectively introduced into the voltage outer128122
loop and current inner loop. The coupling terms are considered as disturbances, and the feed-forward decoupling coefficients are obtained by solving the closed loop transfer function,and the decoupling effect of the dq axis is analyzed when the filter parameters change. The system simulation model is established by Matlab, the simulation results show the proposed control strategy makes the three-phase PV grid-connected inverter with LCL filter not only realize the decoupling control of dq axis,but also has good static and dynamic performance under the condition of the strong robustness and high grid current quality. |
| Author | 强国栋 杜强 高锋阳 乔垚 |
| AuthorAffiliation | 兰州交通大学自动化与电气工程学院,甘肃 兰州 730070;光电技术与智能控制教育部重点实验室(兰州交通大学),甘肃 兰州 730070%兰州交通大学自动化与电气工程学院,甘肃 兰州,730070 |
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| Author_FL | DU Qiang GAO Fengyang QIANG Guodong QIAO Yao |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DOI | 10.7667/PSPC170656 |
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| DocumentTitle_FL | Decoupling control strategy with inverter-side current feedback for LCL-type three-phase PV grid-connected inverter |
| EndPage | 128 |
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| GrantInformation_xml | – fundername: 甘肃省科技支撑计划项目资助(1204GKCA038)This work is supported by Science and Technology Support Project of Gansu Province funderid: (1204GKCA038) |
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| Keywords | 逆变器侧电流反馈 LCL filter 光伏并网 电网电压前馈 解耦控制 功率前馈 inverter side current feedback PV grid connected decoupling control power feed-forward grid voltage feed-forward LCL滤波 |
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| PublicationTitle | 电力系统保护与控制 |
| PublicationTitle_FL | Power System Protection and Control |
| PublicationYear | 2018 |
| Publisher | 兰州交通大学自动化与电气工程学院,甘肃 兰州 730070 光电技术与智能控制教育部重点实验室(兰州交通大学),甘肃 兰州 730070%兰州交通大学自动化与电气工程学院,甘肃 兰州,730070 |
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| Snippet | 为了实现LCL型三相光伏并网逆变器dq轴的解耦控制,同时提高系统的动态响应速度,在同步旋转坐标系下,提出一种适用于逆变器侧电流反馈的前馈解耦控制策略.并在电压外环中引入... |
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| Title | 逆变器侧电流反馈的LCL型三相光伏并网逆变器解耦控制 |
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