梁营玉;刘建政;

• 1:中国矿业大学(北京)机电与信息工程学院
• 2:电力系统及发电设备控制和仿真国家重点实验室(清华大学)

摘要(Abstract)：

随着模块化多电平高压直流输电(modular multilevel converter based high voltage direct current,MMC-HVDC)工程的不断推广应用,与MMC-HVDC所连交流电网呈现多样化趋势。为提高MMC-HVDC应对复杂交流电网的能力,提出基于无差拍控制和重复控制复合控制结构的桥臂电流控制策略。给出了无差拍-重复控制器的设计思路、参数设计方法,并对其稳定性进行了深入分析。详细分析了采样频率与电网频率之比为非整数时对控制性能的影响,提出采用三阶拉格朗日插值法逼近非整周期延时,并与传统的线性插值法的性能进行对比分析。所提无差拍-重复控制器能在谐波和不对称电网电压及电网频率变化等非理想工况下均取得良好的控制效果。仿真结果验证了所提控制策略的正确性和有效性。

关键词(KeyWords)： 谐波及不对称电网电压;模块化多电平换流器;无差拍控制;重复控制

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51707193,61703405);; 教育部中央高校基本科研业务费专项资金资助项目(2017QJ05)~~

作者(Author): 梁营玉;刘建政;

Email:

DOI: 10.13335/j.1000-3673.pst.2017.1753

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