电网技术Issue(12)：3475-3481,7.
基于微分平坦理论的模块化多电平换流器控制器设计
Differential Flatness Based Design of Controller for Modular Multilevel Converter
摘要
Abstract
After the brief description of differential flatness, according to its basic definition two sets of system output variables are chosen to certify that the two chosen output variables can make the modular multilevel converter (MMC) controller satisfying the condition of differential flatness, thus the differential flatness theory (DFT) can be applied to guide the design of MMC controller. A DFT based MMC controller is designed, and two aspects are involved in the design process:the generation of reference trajectories of flatness output and the implementation of the controller. The generation of reference trajectory is that the reference trajectories of state variables are planned in space according to the desired system output, and the implementation of the controller means to generate the desired feed-forward input controller variable according to system input equations. To eliminate the impacts of uncertainty of the converter model and such factors as internal and external disturbances, the error feedback compensation is used to calibrate system flatness output and to track the reference trajectories rapidly. Simulation results show that the design of the control system is effective.关键词
模块化多电平换流器/高压直流输电/微分平坦/轨迹规划/误差补偿Key words
modular multilevel converter/HVDC power transmission/differential flatness/trajectory planning/error compensation分类
信息技术与安全科学引用本文复制引用
宋平岗,李云丰,王立娜,江浪,段程亭..基于微分平坦理论的模块化多电平换流器控制器设计[J].电网技术,2013,(12):3475-3481,7.基金项目
国家自然科学基金资助项目(51367008)。Project Supported by National Natural Science Foundation of China(51367008) （51367008）
