摘要
LCL型并网逆变器的控制参数会影响并网电流的质量,为解决传统控制参数设计方法无法结合多个性能指标进行参数整定的问题,本文针对LCL型并网逆变器进行建模和控制参数设计。采用D分割法进行控制器参数综合设计,结合裕度测试器,得到同时满足幅值裕度、相位裕度、电流环带宽等多性能指标的控制器多目标参数稳定域。此外,本文使用D分割法分析在LCL滤波器参数存在偏差时参数稳定域的变化趋势,实现在滤波器参数扰动情况下的LCL型并网逆变器控制参数的精确设计。最后,通过仿真验证了所提综合设计方法的正确性和有效性。
The control parameters of LCL-type grid-connected inverters affect the quality of grid-connected current.To solve the problem that the traditional design methods of control parameters cannot combine multiple performance crite-ria in parameter setting,an LCL-type grid-connected inverter is modelled in this paper,and its control parameters are designed.A D-partition method is applied for the comprehensive design of controller parameters.By using a margin tes-ter,the multi-objective parameter stability domain of the controller is obtained to satisfy multiple performance criteria,including gain margin,phase margin and current loop bandwidth.In addition,the D-partition method is used to analyze the changing trend of the stability domain when the LCL filter parameters deviate,thus realizing a precise design of con-trol parameters for the LCL-type grid-connected inverter under deviations of filter parameters.Finally,the correctness and validity of the comprehensive design method were verified by simulation results.
作者
马遵
王丹阳
孟贤
肖文勋
朱林
MA Zun;WANG Danyang;MENG Xian;XIAO Wenxun;ZHU Lin(Electric Power Research Institute,Yunnan Power Grid Co.,Ltd.,Kunming 650217,China;School of Electric Power Engineering,South China University of Technology,Guangzhou 510640,China)
出处
《电力系统及其自动化学报》
北大核心
2025年第3期11-18,共8页
Proceedings of the CSU-EPSA
基金
国家自然科学基金资助项目(52077080)
云南电网有限责任公司科技项目(056200KK52222094)。
关键词
控制器参数设计
并网逆变器
比例积分控制器
D分割法
稳定性分析
design of controller parameter
grid-connected inverter
proportional-integral(PI)controller
D-partition method
stability analysis
