Abstract：There have been a lot of research papers on the controller of the voltage source converter high voltage direct current (VSC-HVDC) system based on continuous time domain.However,the control system is fulfilled by the computer discrete sampling method.Therefore the discrete mathematic model of the VSC-HVDC system based on the input-output feedback linearization method is proposed in this paper.And a discrete sliding mode control method is then used to design the controller.To ensure the validity of the controller in the quasi sliding mode,the fast output sampling technology is used in the output feedback.The simulation results with Matlab/Simulink prove the effectiveness of the proposed discrete mathematic model and the control strategy.
[1] 尹明,李庚银,牛同义,等.VSC-HVDC 连续时间状态空间模型及其控制策略研究[J].中国电机工程学报,2005,25(18):34-39. Yin Ming,Li Gengyin,Niu Tongyi,et al.Continuous-time state-space model of VSC-HVDC[J].Proceedings of the CSEE,2005,25(18):34-39. [2] 陈海荣,徐政.基于同步坐标变换的VSC—HVDC暂态模型及其控制器[J].电工技术学报,2007,22(2):121-126. Chen Hairong,Xu Zheng.Transient model and controller design for VSC-HVDC based on synchronous reference frame[J].Transactions of China Electrotechnical Society,2007,22(2):121-126. [3] 梁海峰,李庚银,王松,等.VSC-HVDC 系统控制体系框架[J].电工技术学报,2009,24(5):141-147. Liang Haifeng,Li Gengyin,Wang Song,et al.VSC-HVDC control system framework[J].Transactions of China Electrotechnical Society,2009,24(5):141-147. [4] 姚为正,邓祥纯,易映萍,等.基于 dq0 同步坐标的柔性直流输电控制策略及仿真研究[J].电力系统保护与控制,2009,37(22):71-76. Yao Weizheng,Deng Xiangchun,Yi Yingping,et al.Research on modeling and simulation of VSC-HVDC based on dq0 synchronous coordinate[J].Power System Protection and Control,2009,37(22):71-76. [5] 严干贵,李军徽,蒋桂强,等.背靠背电压源型变流器的非线性解耦矢量控制[J].电工技术学报,2010,25(5):129-135. Yan Gangui,Li Junhui,Jiang Guiqiang,et al.Nonlinear decoupled-vector control of back-to-back voltage source converter[J].Transactions of China Electrotechnical Society,2010,25(5):129-135. [6] Moharana A,Dash P K.Input-output linearization and robust sliding-mode controller for the VSC-HVDC transmission link[J].IEEE Transactions on Power Delivery,2010,25(3):1952-1961. [7] 王国强,王志新.粒子群与PIDNN 控制器在 VSC-HVDC 中的应用[J].中国电机工程学报,2011,31(3):8-13. Wang Guoqiang,Wang Zhixin.Application of PSO and PIDNN controller for VSC-HVDC[J].Proceedings of the CSEE,2011,31(3):8-13. [8] 郑连清,池俊锋,陆治国.基于三级模糊自适应PI控制的VSC-HVDC控制器设计[J].电力系统保护与控制,2011,39(23):117-122. Zheng Lianqing,Chi Junfeng,Lu Zhiguo.Three-step fuzzy adaptive PI controller for VSC-HVDC system[J].Power System Protection and Control,2011,39(23):117-122. [9] 李爽,王志新,王国强,等.三电平海上风电柔性直流输电变流器的PID神经网络滑模控制[J].中国电机工程学报,2012,32(4):20-28. Li Shuang,Wang Zhixin,Wang Guoqiang,et al.PID neural network sliding-mode controller for three-level offshore wind power VSC-HVDC converter[J].Proceedings of the CSEE,2012,32(4):20-28. [10]蔡新红,赵成勇.基于欧拉-拉格朗日模型的模块化多电平换流器的无源控制[J].电工技术学报,2013,28(10):224-232. Cai Xinhong,Zhao Chengyong.Euler-Lagrange model based passive control for modular multilevel converter[J].Transactions of China Electrotechnical Society,2013,28(10):224-232. [11]魏晓光,汤广福,郑健超.电压源高压直流输电离散模型及其控制策略[J].中国电机工程学报,2007,27(28):6-11. Wei Xiaoguang,Tang Guangfu,Zheng Jianchao.Study of VSC-HVDC discrete model and its control strategies[J].Proceedings of the CSEE,2007,27(28):6-11. [12]杨浩,张楠,叶明佳.向无源网络供电的 VSC-HVDC离散模型及其控制策略[J].电力系统保护与控制,2012,40(4):37-42. Yang Hao,Zhang Nan,Ye Mingjia.Study of VSC-HVDC connected to passive network discrete model and its control strategies[J].Power System Protection and Control,2012,40(4):37-42. [13]王久和.先进非线性控制理论及其应用[M].北京:科学出版社,2012. [14]刘金锟.滑模变结构控制MATLAB仿真[M].第2版.北京:清华大学出版社,2012. [15]Saaj M C,Bandyopadhyay B,Unbehauen H.A new algorithm for discrete-time sliding-mode control using fast output sampling feedback[J].IEEE Transactions on Industrial Electronics,2002,49(3):518-523.
2015, Vol. 30 
