Optimization design and robust control of sampling filter circuit in active power filter

被引：0
|
作者：
Wang H. [1 ]
Luo A. [1 ]
Xu Q. [1 ]
Jin G. [1 ]
Ma F. [1 ]
He Z. [1 ]
机构：
[1] National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha
来源：
Wang, Hao (498264193@qq.com) | 1600年 / Automation of Electric Power Systems Press卷 / 40期
基金：
中国国家自然科学基金;
关键词：
Active power filter; Current predictive control; RC filter circuit; Stability; Time delay;
D O I：
10.7500/AEPS20150518012
中图分类号：
学科分类号：
摘要：
The design of current sampling circuit and the control effect of the current loop are two important factors that affect the accuracy of active power filter (APF) compensation. First of all, this paper proposes a parameter design method of RC filter circuit, and makes a detailed analysis of the RC parameter selection effect on the APF inner current loop through Bode diagram. At the same time, considering the inevitable existence of control delay, this paper analyzes the discrete deadbeat control model with time delay in the z domain, and discusses the impact on system robustness by inductance deviation. In this regard, a predictive current control method is presented, and a two-sample forecast is made of grid voltage and inverter output current. This method reduces the impact of the delay on the system and enhances system robustness. Moreover, according to the transfer function of current loop in the z domain, system stability is analyzed, and the range of control parameters selection given. For this control method, the APF experimental prototype is set up, the experimental results demonstrating the effectiveness and feasibility of the control strategy. © 2016 Automation of Electric Power Systems Press.
引用
收藏
页码：107 / 113
页数：6
相关论文
共 17 条
  • [1] Chu L., Tu C., Luo A., Et al., A series hybrid APF design for integrated compensation of different types of harmonic sources, Automation of Electric Power Systems, 37, 8, pp. 123-128, (2013)
  • [2] Xiao L., Tong C., Gao R., An improved hysteretic current method for active power filter, Automation of Electric Power Systems, 38, 12, pp. 119-124, (2014)
  • [3] Qiu Y., Liang Z., Wei X., An improved supply current direct control scheme for active power filter, Automation of Electric Power Systems, 36, 24, pp. 79-83, (2012)
  • [4] Li D., Sun Y., Xiong B., Et al., A novel control method of shunt active power filter, Automation of Electric Power Systems, 38, 15, pp. 112-117, (2014)
  • [5] Yang X., Xie X., Ma J., Et al., A high-reliability control strategy for shunt active filter, Automation of Electric Power Systems, 39, 5, pp. 128-133, (2015)
  • [6] Li D., Yang K., Sun Y., Et al., A novel series hybrid active power filter, Automation of Electric Power Systems, 39, 6, pp. 77-82, (2015)
  • [7] Zou C., Liu B., Duan S., Et al., Influence of delay on system stability and its optimization in grid-connected inverters, Proceedings of the CSEE, 35, 2, pp. 411-417, (2015)
  • [8] Yang K., Chen G., compensation current control for DSTATCOM based on repetitive control, Automation of Electric Power Systems, 37, 10, pp. 80-85, (2013)
  • [9] Yu J., Su M., Sun Y., improved repetitive control and its optimization for active power filter, Transactions of China Electrotechnical Society, 27, 2, pp. 235-242, (2012)
  • [10] Gong J., Zha X., Chen B., Analysis and realization of a fast repetitive controller in active power filter system, Transactions of China Electrotechnical Society, 26, 10, pp. 110-117, (2011)
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