文章摘要
王浩,何晋伟,贾宏杰.面向微网群的多端口电流源变流器共模电压抑制仿真[J].电力系统自动化,2017,41(18):74-79. DOI: 10.7500/AEPS20170224006.
WANG Hao,HE Jinwei,JIA Hongjie.Common-mode Voltage Suppression Simulation for Multi-port Current Source Converter of Microgrid Clusters[J].Automation of Electric Power Systems,2017,41(18):74-79. DOI: 10.7500/AEPS20170224006.
面向微网群的多端口电流源变流器共模电压抑制仿真
Common-mode Voltage Suppression Simulation for Multi-port Current Source Converter of Microgrid Clusters
DOI:10.7500/AEPS20170224006
关键词: 微网群  电流源变流器  共模电压抑制  空间矢量调制
KeyWords: microgrid cluster  current source converter  common-mode voltage suppression  space vector modulation
上网日期:2017-07-04
基金项目:国家自然科学基金资助项目(51677129)
作者单位E-mail
王浩 智能电网教育部重点实验室(天津大学), 天津市 300072  
何晋伟 智能电网教育部重点实验室(天津大学), 天津市 300072 jinwei.he@tju.edu.cn 
贾宏杰 智能电网教育部重点实验室(天津大学), 天津市 300072  
摘要:
      研究了一种基于电流源的多端口变换器,并将其应用于微网群的互联。针对微网群系统共模电压较高,易造成电机绝缘损坏、电磁干扰、通信故障、保护误动作等问题,提出一种改进的综合空间矢量调制策略。首先,对零矢量的冗余开关状态进行优选,抑制零矢量作用产生的共模电压尖峰。然后,研究变流器不同矢量排序方案对系统共模电压的影响,提出一种优选的排序策略,进一步降低无序的矢量排列造成的共模电压尖峰。最后,在MATLAB/Simulink环境下搭建含多端口电流源的微网群仿真模型,并针对所提综合调制策略进行仿真分析,结果证明了该调制策略的可行性和对共模电压抑制的有效性。
Abstract:
      A current source converter(CSC)based multi-port converter system is researched and its application in microgrid cluster is presented. Aiming at problems of motor damage, electro-magnetic interference, communication failure and maloperation of the protection caused by large common-mode voltage(CMV), this paper proposes an enhanced comprehensive space vector modulation strategy. Firstly, redundant switching statuses of zero vectors are properly selected to suppress corresponding CMV. Then, the effect of different sequences of vector on CMV is analyzed and an optimized sequence is presented to reduce the peak CMV induced by random sequences. Finally, a simulation model of multi-port CSC utilized in microgrid cluster is established in MATLAB/Simulink, and results verify the effectiveness of the proposed modulation strategy and CMV suppression.
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