A SPLL technique under unbalanced and seriously distorted grid voltage conditions

doi:10.1109/CCDC.2014.6852979

	A SPLL technique under unbalanced and seriously distorted grid voltage conditions
	Dang, Cun-Lu; Zhao, Xiao-Gang
	2014
会议日期	May 31, 2014 - June 2, 2014
会议地点	Changsha, China
关键词	Negative sequence Phase locked Secondorder generalized integrator (SOGI) Sequence Decoupled Resonant (SDR) Voltage distortions
DOI	10.1109/CCDC.2014.6852979
页码	4523-4528
英文摘要	The traditional SPLL can't accurately track the frequency and phase of the grid voltage under the condition of unbalanced and seriously distorted three-phase voltage. To solve this problem, the novel SPLL model based on Sequence Decoupled Resonant (SDR) combined with Second Order Generalized Integrator (SOGI) is proposed. By using the technic of SDR and SOGI, this design successfully achieves the separation of positive and negative sequence voltage, the extraction of fundamental voltage and a filting function. At the same time, the influence of the negative sequence component and the harmonic component can be effectively eliminated during the process of tracking the frequency and phase information. The simulation results show that the new SPLL can accurately track the frequency and phase of the grid voltage under the condition of unbalanced and seriously distorted three-phase voltage, which verify its validity and correctness. © 2014 IEEE.
会议录	26th Chinese Control and Decision Conference, CCDC 2014
会议录出版者	IEEE Computer Society
语种	英语
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117287]
专题	电气工程与信息工程学院
作者单位	School of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Dang, Cun-Lu,Zhao, Xiao-Gang. A SPLL technique under unbalanced and seriously distorted grid voltage conditions[C]. 见:. Changsha, China. May 31, 2014 - June 2, 2014.