基于矢量谐振控制的三相四线制APF控制策略  

Control Strategy of Three-phase Four-wire APF Based on Vector-resonant Control

作　　者：刘翼肇 王磊[1] 任春光[1] 韩肖清[1] 杨宇[2] LIU Yizhao WANG Lei REN Chunguang HAN Xiaoqing YANG Yu(College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China State Grid Shanxi Electric Power Company, Taiyuan 030001, China)

机构地区：[1]太原理工大学电气与动力工程学院,太原030024 [2]国网山西省电力公司,太原030001

出　　处：《电力系统及其自动化学报》2017年第7期46-52,共7页Proceedings of the CSU-EPSA

基　　金：山西省煤基重点科技攻关项目(MD2014-06)

摘　　要：三相四线制有源滤波器能有效解决0.4 kV低压配电系统中非线性负荷产生的谐波污染、不平衡等电能质量问题。为有效提高其动态性能,该文提出了一种基于矢量谐振控制的三相四线制有源滤波器控制策略。首先,直接将网侧电流、直流母线电压作为状态变量,建立了其在dq0旋转坐标系下的数学模型。其次,该控制策略基于无谐波检测控制原理,利用了矢量谐振控制频率适应性好和稳定裕度大的优点,实现了对交流谐波分量的快速跟踪控制,具有动态响应速度快、稳态精度高、计算量小的特点,并采用delta变换进行了数字化实现。最后,通过研制的30 kV·A实验样机证实了所提控制策略的有效性,取得了预期效果。The three-phase four-wire active power filter （APF） can effectively solve the power quality problems including harmonic pollution and imbalance, which are caused by the nonlinear load in a 0.4 kV low voltage power distribution system. In order to improve the dynamic performance of APF, a control strategy based on vector-resonant control （VRC） is proposed in this paper. First, a mathematical model of three-phase four-wire APF is established in dqO rotational coordinate by adopting the power supply current and DC bus voltage as state variables. Second, based on the principle of non-harmonic detection control, the proposed control strategy realizes a fast tracking control of the AC harmonic components by making use of the advantages of VRC, such as good frequency adaptation and large stability margin. The proposed strategy has the characteristics of fast dynamic response, high steady-state precision and small computational load. Meanwhile, it is digitally realized with the help of delta transform. Finally, the proposed control strategy was validated by a 30 kV. A prototype developed in laboratory, and the desired results were achieved.

关 键 词：矢量谐振控制 三相四线制APF 无谐波检测 delta变换 

分 类 号：TM464[电气工程—电器]