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浙江大学学报(工学版)
JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE)  2013, Vol. 47 Issue (2): 339-344    DOI: 10.3785/j.issn.1008-973X.2013.02.023
    
High performance compensation current control strategy of #br# single-phase SVG
YANG Kun, CHEN Lei, CHEN Guo-zhu
College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract  

To deal with the characteristics of single-phase grid a double-loop control strategy of PI and repetitive control compound controller (PI+REP) is introduced to improve the compensation performance of single-phase static var generator (SVG). The PI controller is designed according to the mathematics model of system. And the outer repetitive controller is designed based on the frequency characteristics of inner closed-loop. It can combine superior dynamic performance and robustness of PI controller at low frequency with high tracking accuracy towards periodic signals of the repetitive one, and greatly improve the output performance of single-phase SVG. Frequency characteristics analysis indicates that the system phase lag caused by conventional PI controller is eliminated at the fundamental frequency and less than 4.5° within 500 Hz. Simulation and experimental results show that the accuracy of reactive power compensation and ability of harmonic suppression of single-phase SVG are both improved by using proposed control strategy.

Published: 01 February 2013
CLC:  TM 762  
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YANG Kun, CHEN Lei, CHEN Guo-zhu. High performance compensation current control strategy of #br# single-phase SVG. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2013, 47(2): 339-344.

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http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2013.02.023     OR     http://www.zjujournals.com/eng/Y2013/V47/I2/339


单相SVG高性能补偿电流控制技术

针对单相静止无功发生器（SVG）应用场合无法获得瞬时无功、谐波丰富、工况复杂等特点,以提高单相SVG无功补偿精度,增强装置谐波抑制能力为目的,引入单相SVG系统PI加重复控制（PI+REP）的双环控制策略,根据系统数学模型设计数字PI内环,通过内环频率特性设计重复控制外环,将PI控制器低频段优越的动态性能和鲁棒性,与重复控制对周期信号高跟踪精度相结合,改善装置基波补偿精度和谐波抑制能力.频率特性分析表明,该控制策略可以有效消除传统PI控制在基波频率的相位滞后,并将500 Hz以内的相位滞后降低到4.5°以内.仿真和实验结果显示,在该控制策略下单相SVG的无功补偿精度和谐波抑制能力均得到了明显提高.

［1］ 朱桂萍,王树民. 电能质量控制技术综述［J］. 电力系统自动化. 2002,26(19): 28-31.
ZHU Gui-ping, WANG Shu-min. A Survey on power quality control technology ［J］. Automation of Electric Power System, 2002,26(19): 28-31.
［2］ ISE T, HAYASHI Y, TSUJI K. Definitions of power quality levels and the simplest approach for unbundled power quality services ［C］∥Proceedings of Ninth International Conference on Harmonics and Quality of Power. Orlando, FL,USA: ［s.n.］ 2000: 385-390.
［3］ 刘小河,赵刚,于娟娟.电弧炉非线性特性对供电网影响的仿真研究［J］.中国电机工程学报. 2004,24(6)： 30-34.
LIU Xiao-he, ZHAO Gang, YU Juan-juan. Simulations on the impaction in power supply network caused by the nonlinear characteristics of electric arc furnace system ［J］. Proceedings of the CSEE, 2004, 24(6): 30-34.
［4］ 王皓. 单相混合型谐波和无功补偿系统研究［D］. 北京：北京交通大学, 2008.
WANG Hao. Study on Single-phase mixed harmonic and reactive power compensation system［D］. Beijing： Beijing Jiaotong University,2008.
［5］ 朱永强,刘文华,邱东刚,等.基于单相STATCOM的不平衡负荷平衡化补偿的仿真研究［J］.电网技术. 2003,27(8): 42-45.
ZHU Yong-qiang, LIU Wen-hua, QIU Dong-gang, et al. Simulation of balancing compensation of unbalanced load based on single phase STATCOM ［J］. Power System Technology, 2003, 27(8): 42-45.
［6］ ROSHAN A, BURGOS R, BAISDEN A C, et al. A d-q frame controller for a full-bridge single phase inverter used in small distributed power generation systems ［C］∥Proceeding of APEC 2007. Anaheim, CA, USA: IEEE, 2007: 641-647.
［7］ 陈炜,陈成,宋战锋,等.双馈风力发电系统双PWM变换器比例谐振控制［J］.中国电机工程学报. 2009,29(15): 1-7.
CHEN Wei, CHEN Cheng, SONG Zhan-feng, et al. Proportional-resonant control for dual PWM Converter in doubly fed wind generation system ［J］. Proceedings of the CSEE, 2009, 29(15): 1-7.
［8］ 胡文华,马伟明,刘春喜.一种新型交流PI调节器及其在逆变电源中的应用［J］.电气传动. 2010,40(1): 38-42.
HU Wen-hua, MA Wei-ming, LIU Chun-xi. Novel AC PI regulator and its applications on inverter power source ［J］. Electric drive, 2010, 40(1): 38-42.
［9］ 赵清林,郭小强,邬伟扬.单相逆变器并网控制技术研究［J］.中国电机工程学报. 2007,27(16): 60-64.
ZHAO Qing-lin, GUO Xiao-qiang, WU Wei-yang. Research on control strategy for single-phase grid-connected inverter ［J］. Proceedings of the CSEE, 2007, 27(16): 60-64.
［10］ YUAN Xiao-ming, MERK W, STEMMLER H, et al. Stationary-frame generalized integrators for current control of active power filters with zero steady-state error for current harmonics of concern under unbalanced and distorted operating conditions ［J］. Industry Applications, IEEE Transactions on, 2002, 38(2): 523-532.
［11］ FUKUDA S, YODA T. A novel current-tracking method for active filters based on a sinusoidal internal model for PWM invertors ［J］. Industry Applications, IEEE Transactions on, 2001, 37(3): 888-895.
［12］ 谢川,张靖,王智强，等.适于重复控制固定采样点数的数字锁相方法［J］.浙江大学学报：工学版,2011,45(5): 789-793.
XIE Chuan, ZHANG Jing, WANG Zhi-qiang, et al. Digital PLL with fixed number of sampling points for repetitive control algorithm ［J］. Journal of Zhejiang University :Engineering Science, 2011, 45(5): 789-793.
［13］ 孔雪娟,王荆江,彭力,等.基于内模原理的三相电压源型逆变电源的波形控制技术［J］.中国电机工程学报. 2003,23(7): 67-70.
KONG Xue-juan, WANG Jing-jiang, PENG Li, et al. The control scheme of three-phase voltage-source inverter output waveform based on internal model theory ［J］. Proceedings of the CSEE, 2003,23(7): 67-70.
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