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Improvement in oscillatory performance of virtual line-flux-linkage for PWM rectifier
Author(s): 
Pages: 23-28,35
Year: Issue:  7
Journal: Electric Machines and Control

Keyword:  PWM整流器虚拟电网磁链矢量控制微分负反馈;
Abstract: 针对PWM整流器虚拟磁链定向矢量控制中存在因积分初始值选取不当造成的直流偏移和磁链振荡问题,提出了一种磁链改进控制策略.以分析虚拟磁链振荡产生的因素为基础,建立了虚拟磁链振荡模型,并通过对系统有功、无功电流特性的研究,提出了将虚拟磁链与PWM整流器控制结合起来综合考虑,利用虚拟磁链微分负反馈和有功电流共同作用来抑制虚拟磁链振荡的控制策略.理论分析表明该方法能有效抑制虚拟磁链、直流母线电压的振荡,仿...
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