| 引用本文: | 杨俊华,陈凯阳,王秋晶,陈思哲,吴捷.电压源型高压直流输电系统的反步变结构控制[J].控制理论与应用,2014,31(11):1548~1554.[点击复制] |
| YANG Jun-hua,CHEN Kai-yang,WANG Qiu-jing,CHEN Si-zhe,WU Jie.Variable structure control of voltage source converter-high voltage direct current system based on backstepping[J].Control Theory and Technology,2014,31(11):1548~1554.[点击复制] |
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| 电压源型高压直流输电系统的反步变结构控制 |
| Variable structure control of voltage source converter-high voltage direct current system based on backstepping |
| 摘要点击 2464 全文点击 919 投稿时间：2014-04-13 修订日期：2014-09-12 |
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| DOI编号 10.7641/CTA.2014.40307 |
| 2014,31(11):1548-1554 |
| 中文关键词 电压源换流器 直流输电 反步法 变结构控制 |
| 英文关键词 voltage source converter DC transmission backstepping design variable structure control |
| 基金项目 国家自然科学基金资助项目(51307025, 51377026, 5177050); 广东省高等学校科技创新资助项目(2013KJCX0059); 广东省教育厅专项重点实验室资助项目(IDSYS200701); 广东高校优秀青年创新人才培养计划资助项目(2012LYM0052); 广东省自然科学基金资助项目(S2012040007895). |
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| 中文摘要 |
| 为提高电压源高压直流输电系统(voltage source converter-high voltage direct current, VSC--HVDC)受扰时的动态性能, 提出一种可预测不确定度上界的反步变结构控制策略. 通过分析电压源变流器dq0坐标下的数学模型, 应用传统反步设计方法, 获得系统变流器控制策略: 为消除系统实际运行中的扰动影响, 加入一个含有不确定度PI预测方案的变结构控制环节, 使各子系统受扰时仍能满足Lyapunov渐近稳定条件. 基于MATLAB/Simulink环境, 研究了VSC--HVDC系统交流侧两相短路故障工况, 仿真结果表明, 采用所提控制策略的控制效果优于传统双闭环PI矢量控制, 并可进一步提高VSC--HVDC系统的动态性能, 系统鲁棒性增强. |
| 英文摘要 |
| A predictable uncertainty bound backstepping variable structure control strategy was proposed to improve the dynamic performance of the voltage sourced converters based high voltage direct current (VSC–HVDC) under disturbance. By analyzing the voltage source converter in dq0 synchronous rotating coordinate, the control strategy of the converter can be derived step by step through traditional backstepping method. To eliminate the effects of disturbance in the actual operation, a PI link was added to predict the bound of the uncertainties of system, so that each subsystem can meet Lyapunov asymptotically stable condition under disturbance. Finally, the conditions of VSC–HVDC system for two-phase AC-side short-circuit fault under the proposed control strategy was simulated in the MATLAB/Simulink environment, and the result was contrasted with that using the traditional double-loop vector PI control strategy. The simulation results show that the proposed control strategy can further improve the dynamic performance of VSC–HVDC system, and enhance the robustness of the system. |
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