摘要
大功率、轻量化、小型化是未来储能变流器系统(PCS)的发展方向,T型三电平拓扑结构在这方面有巨大优势。在分析T型三电平拓扑的基础上,采用比例积分(PI)控制与重复控制相结合的复合电流控制策略控制LCL滤波器,有效抑制了低次电流谐波的含量,提高了交流侧稳态电流质量。实验结果表明,系统稳定可靠,电流谐波得到抑制且电流动态响应速度快。
High power,light weight, miniaturization are the future direction of power conversion system （PCS）, and three-level T-type topology has a huge advantage in this aspect.By analyzing the switch commutation of the T-type topology, a composite current control which is made up of the proportional integral （PI） control and repetitive control is used for controlling LCL filter.It improves the power quality of AC side and suppresses the low-order harmonic current effectively.Finally, the experimental results show that the system is stable and reliable ,the harmonic current is suppressed and the response speed of current loop is fine.
出处
《电力电子技术》
CSCD
北大核心
2015年第6期50-51,55,共3页
Power Electronics
关键词
变流器
复合控制
滤波器
converter
composite control
filter
