摘要
储能逆变器运行于并网模式时,系统中存在的非线性负载或电网电压畸变可导致逆变器并网电流存在大量谐波,严重影响了电气元件的正常工作和系统的电能质量。为此,提出了基于重复控制的储能逆变器谐波抑制策略,在并网电流控制的基础上并联重复控制器,并对重复控制器的结构和参数进行了设计。最后通过搭建储能逆变器并网实验平台对谐波抑制策略进行验证,实验结果证明了所提控制策略的有效性。
When energy storage inverters operate in grid-connected mode,the non-linear loads in the system or grid voltage distortion may lead to a large number of harmonics in grid-connected current of the inverters,which seriously affects the normal operation of electrical components and the power quality of the system.Therefore,a harmonic suppression strategy based on repetitive control of energy storage inverters is proposed,in which a repetitive controller is paralleled to the based grid-connected current closed-loop control,and the structure and parameters of the repetitive controller are designed.Finally,a grid-connected experimental platform of energy storage inverters is built to verify the harmonic suppression strategy.The experimental results show that the proposed control strategy is effective and reliable.
作者
徐海珍
余畅舟
王庆龙
余俊杰
XU Haizhen;YU Changzhou;WANG Qinglong;YU Junjie(Department of Electronic Information and Electrical Engineering,Hefei University,Hefei 230601,China;Technical Skills Training Department,State Grid Anhui Electric Power Co.Ltd.Training Center,Hefei 230601,China)
出处
《电气应用》
2019年第S01期192-196,共5页
Electrotechnical Application
基金
安徽省高等学校自然科学研究项目“高渗透率弱电网下多运行模式变流器谐振机理与抑制策略研究”(KJ2019A0841)
安徽省自然科学基金青年项目“虚拟同步发电机的多目标功率优化控制研究”(1908085QE208)
合肥学院技术开发项目“工业测试用电网模拟器的设计和研制”(00180001)
安徽省发改委项目“新能源汽车暨智能网联汽车创新工程项目”
关键词
储能逆变器
重复控制
谐波抑制
energy storage inverters
repetitive control
harmonic suppression
