A Versatile Control Scheme for a Dynamic Voltage Restorer for Power-Quality Improvement

被引:101
作者
Roncero-Sanchez, Pedro [1 ]
Acha, Enrique [2 ]
Ortega-Calderon, Jose Enrique [2 ]
Feliu, Vicente [1 ]
Garcia-Cerrada, Aurelio [3 ]
机构
[1] Univ Castilla La Mancha, ETS Ingn Ind, Dept Elect Elect Control Engn & Commun, E-13071 Ciudad Real, Spain
[2] Univ Glasgow, Dept Elect & Elect Engn, Glasgow G12 8LT, Lanark, Scotland
[3] Univ Pontificia Comillas Madrid, Dept Elect & Control Engn, Madrid 28045, Spain
关键词
Dynamic voltage restorer (DVR); harmonic distortion; power quality (PQ); repetitive control; voltage sag; CONTROL STRATEGY; COMPENSATION; SYSTEM; DVR;
D O I
10.1109/TPWRD.2008.2002967
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper presents a control system based on a repetitive controller to compensate for key power-quality disturbances, namely voltage sags, harmonic voltages, and voltage imbalances, using a dynamic voltage restorer (DVR). The control scheme deals with all three disturbances simultaneously within a bandwidth. The control structure is quite simple and yet very robust; it contains a feedforward term to improve the transient response and a feedback term to enable zero error in steady state. The well-developed graphical facilities available in PSCAD/EMTDC are used to carry out all modeling aspects of the repetitive controller and test system. Simulation results show that the control approach performs very effectively and yields excellent voltage regulation.
引用
收藏
页码:277 / 284
页数:8
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