摘要
为减小逆变器并联系统中的环流,此处分析了一种无功闭环调压、有功闭环调相控制策略。建立了两台组合式三相逆变器并联系统的数学模型,基于逆变器输出有功和无功的表达式,在频域中设计了两个控制器的参数,建立了两台10 kVA原理样机,实验结果表明该并联控制策略可有效地抑制环流。该三相逆变器拓扑及并联控制技术可推广应用到大功率逆变器场合。
In order to reduce the circulation current in inverter parallel systems,this paper analyzes control strategies that the passive power adjusts the output voltage and the active power adjusts the output phase.The mathematic model of the parallel system is built for two combined three-phase inverters.Based on the expression of the output active and passive power,two control parameters are designed in the frequency domain.Two 10 kVA prototypes are implemented. Experimental results verify the correctness of the theoretical analysis.Therefore,the topology and parallel control tech- nique can be extended to the high power inverter.
出处
《电力电子技术》
CSCD
北大核心
2012年第1期99-101,共3页
Power Electronics
关键词
逆变器
并联控制
有功
无功
inverter
parallel control
active power
passive power
