摘要
针对传统动态电压恢复器(dynamic voltage restorer,DVR)拓扑结构直流侧电压等级高,逆变单元输出电压波形畸变率大及其损耗亦较高的问题,依据开放式绕组原理提出新型DVR拓扑结构。研究了新型DVR拓扑实现低谐波畸变率和低直流侧电压幅值的方法;建立了新型DVR等效电路模型,并给出新型DVR拓扑的控制策略。同时分析对比了新型DVR与传统DVR拓扑的功耗,结果表明新型DVR功耗较低。最后,在MATLAB/SIMULINK平台搭建仿真模型,仿真结果证明所提出的DVR拓扑结构性能优越,补偿精度高。
This paper proposed a new topology of dynamic voltage restorer(DVR)based on the concept of open-end winding,considering higher dc-link rating,harmonic distortion of voltage generated by inverter and power loss of converter.The methods to decrease the harmonic distortion of voltage and amplitude of dc-link were studied.We established equivalent circuit model and then the control strategy was presented.Meanwhile,compared to the traditional DVR,the proposed DVR has better performance on power loss.Finally,we build the simulation model on MATLAB/SIMMULINK and the simulation results show that the new topology structure has superior performance and high compensation accuracy.
作者
孙佳莹
徐在德
孔令魁
SUN Jia-ying;XU Zai-de;KONG Ling-kui(School of Electrical and Electronic Engineering,Harbin University of Science and Technology,Harbin 150080,China;State Grid Jiangxi Power Research Institute,Nanchang 330096,China)
出处
《哈尔滨理工大学学报》
CAS
北大核心
2018年第4期12-17,共6页
Journal of Harbin University of Science and Technology
基金
江西省电力有限公司科技项目(52182015000G)
关键词
动态电压恢复器
开放式绕组
功率损耗
加权谐波总畸变率
dynamic voltage restorer
open-end winding
power loss
the weighted total harmonic distortion
