摘要
为有效抑制三相光伏并网逆变器的并网电流谐波,提出一种比例复数积分谐波抑制方法。首先,介绍比例复数积分的由来及特性;然后根据其特性,结合PI控制方法提出一种组合谐波抑制方法,给出组合方法的控制框图,分析其稳定性和稳态误差;最后,搭建三相光伏逆变器的Matlab/Simulink仿真模型及实验平台,对理论分析的结果进行了验证。仿真及实验结果证明所提出的组合算法相对于PI控制,能够有效地抑制并网电流的低次谐波,减小稳态误差,具有良好的实际应用价值。
In order to effectively suppress the grid current harmonics of three-phase grid connected photovoltaic inverters,a proportional complex integral harmonic suppression method was proposed.First,the origin and characteristics of proportional complex integral were introdued.Then,according to its characteristics,combined with PI control method,a combination method was proposed to suppress harmonic,the control block diagram was given,the the stability and steady-state error were analyzed.The Matlab/Simulink simulation model and experimental platform for the construction of PV inverter were built,the results of theoretical analysis were verified.Simulation and experimental results show that the proposed algorithm can effectively suppress the low order harmonics of the grid connected current and reduce the steady-state error,and has good practical application value compared with the PI control.
作者
廖志鹏
刘志宇
郗瑞霞
LIAO Zhipeng;LIU Zhiyu;XI Ruixia(College of Information Engineering,Nanchang University,Nanchang 330031,Jiangxi,China)
出处
《电气传动》
北大核心
2018年第9期28-33,共6页
Electric Drive
基金
国家国际科技合作专项(2014DFG72240)
江西科技落地计划项目(KJD14006)
南昌大学研究生创新项目(CX2017184)
关键词
并网逆变器
比例复数积分
解耦控制
谐波抑制
gird connected inverter
proportional complex integral(PCI)
decoupling control
harmonic suppression
