摘要
针对EAST磁体电源等非线性负载产生低次谐波(75～125Hz)难以治理的问题,提出注入式混合有源滤波的方案。基于EAST低次谐波实验平台,对注入式混合有源电力滤波装置的拓扑结构与滤波原理进行了研究;同时采用一种降低直流侧中点电位波动的三电平空间电压矢量调制算法,并给出基本矢量作用时间的求取方法;对该方案及算法进行了仿真与实验验证,仿真与实验结果具有很高的一致性,证明该方案能有效抑制EAST磁体电源运行中产生的低次谐波及其谐振放大。
Aiming at the problem that low-order harmonics (75-125 Hz) are difficult to control due to non-linear loads such as EAST magnet power supply,an injection hybrid active filtering scheme is proposed.Based on the EAST low-order harmonic experimental platform,the topology and filtering principle of the injected hybrid active power filter device are studied.At the same time,a three-level space voltage vector modulation algorithm for reducing the midpoint potential fluctuation of the DC side is adopted.The method of obtaining the basic vector action time is given.The simulation and experimental verification of the scheme and algorithm are carried out,and the simulation results are in good agreement with the experimental results,which proves that the scheme can effectively suppress the low-order harmonics and resonance amplification produced in the operation of EAST magnet power supply.
作者
沈显顺
高格
茆华风
李俊
卢晶
吴亚楠
Shen Xianshun;Gao Ge;Mao Huafeng;Li Jun;Lu Jing;Wu Ya’nan(Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China;Science Island Branch of Graduate School,University of Science and Technology of China,Hefei 230026,China)
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2019年第5期110-116,共7页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(51707190)
关键词
EAST电源
低次谐波
混合有源滤波
中点电位波动
三电平空间电压矢量
EAST power supply
low-order harmonic
hybrid active filter
midpoint potential fluctuation
three-level space voltage vector
