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文章摘要
基于电感电流无差拍控制的三相并网逆变器
Based on the inductance current dead-beat control for three-phase grid inverter
Received:August 06, 2014  Revised:August 06, 2014
DOI:
中文关键词: 并网逆变器  功率耦合  电感电流  瞬时功率  谐波含量
英文关键词: Grid inverter  Power coupling  Inductor current  Instantaneous power  Harmonic content
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
Author NameAffiliationE-mail
YANG Yong College of Electrical Engineering,Xinjiang University  
CHENG Zhijiang* College of Electrical Engineering,Xinjiang University 13565840463@163.com 
LI Yongdong College of Electrical Engineering,Xinjiang University  
XIE Yongliu College of Electrical Engineering,Xinjiang University  
SHI Ruijing College of Electrical Engineering,Xinjiang University  
FAN Xiaochao College of Electrical Engineering,Xinjiang University  
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中文摘要:
      针对传统并网逆变器的电流矢量PI控制存在功率耦合问题,需要进行复杂的解耦控制,难以实现并网逆变器系统无稳态误差控制。为了解决这一问题,本文采用瞬时功率外环和电感电流无差拍内环的控制策略,推导了三相并网逆变器的离散数学模型,减少了大量坐标变换,简化了并网逆变器控制系统的设计。通过Matlab仿真结果表明,在并网电流发生变化时,该控制策略仍可以实现并网逆变器输出有功、无功的功率解耦,且并网逆变器的输出电流具有良好的动态跟踪性能,电流谐波含量较低,满足并网要求。
英文摘要:
      In view of power coupling problems of the traditional grid inverter current vector PI control, it needs complex decoupling control, and one of the difficult is to achieve grid inverter system with no steady state error control. In order to solve this problem, this paper takes the instantaneous power outer ring and the inner ring of the inductance current dead-beat control strategy, and derives the discrete mathematical model of three-phase grid inverter, reduces a lot of coordinate transformation, and the design of the grid inverter control system was simplified. With the results of Matlab simulation show that the change of grid current, the control strategy can still achieve grid inverter output active and reactive power decoupling, and grid inverter output current has a good dynamic tracking performances, the low of current harmonic content satisfies the requirement of grid.
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