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	Norton equivalent circuit for current control loop of grid-connected system
	Tang C(汤赐) ; Yang G(杨耕) ; Tan JT(谭惊涛) ; TANG Ci ; YANG Geng ; TAN Jing-tao
	2016-03-30 ; 2016-03-30
关键词	grid-connected system PWM inverter LCL output filter weak distributed power system TM464
其他题名	Norton equivalent circuit for current control loop of grid-connected system
中文摘要	Modeling method for the current control loop of a grid-connected PWM inverter with the LCL output filter was discussed.Firstly,the current control loop with the LCL inverter-side current as feedback was established.Then,parameters of PI controller were calculated on the basis of an equivalent controlled object.Finally,Norton equivalent circuit for the current control loop of grid-connected system was derived by integrating one control equation,which connected the PWM inverter output voltage and the LCL inverter-side current,with two circuit equations,separately using the LCL inverter-side current and the injected current as loop currents.With the induced Norton equivalent circuit,system-level resonant and unstable issues on real grid-connected system applied in weak distributed power systems can be easily analyzed.The validity of substituting Norton equivalent circuit for grid-connected system is verified by simulation and experiment.; Modeling method for the current control loop of a grid-connected PWM inverter with the LCL output filter was discussed.Firstly,the current control loop with the LCL inverter-side current as feedback was established.Then,parameters of PI controller were calculated on the basis of an equivalent controlled object.Finally,Norton equivalent circuit for the current control loop of grid-connected system was derived by integrating one control equation,which connected the PWM inverter output voltage and the LCL inverter-side current,with two circuit equations,separately using the LCL inverter-side current and the injected current as loop currents.With the induced Norton equivalent circuit,system-level resonant and unstable issues on real grid-connected system applied in weak distributed power systems can be easily analyzed.The validity of substituting Norton equivalent circuit for grid-connected system is verified by simulation and experiment.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/147119]
专题	清华大学
推荐引用方式 GB/T 7714	Tang C,Yang G,Tan JT,et al. Norton equivalent circuit for current control loop of grid-connected system[J],2016, 2016.
APA	汤赐,杨耕,谭惊涛,TANG Ci,YANG Geng,&TAN Jing-tao.(2016).Norton equivalent circuit for current control loop of grid-connected system..
MLA	汤赐,et al."Norton equivalent circuit for current control loop of grid-connected system".(2016).

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