摘要
模块化多电平换流器的控制器是在d-q旋转坐标系中建立电压外环和电流内环的双闭环PI控制系统,滑模控制策略由于其脉冲生成方式的独特性而没有应用于模块化多电平换流器的控制领域。在深入研究两种控制策略的基础上,提出一种新型滑模控制系统,该控制系统减少一个电压外环PI调节环节,简化系统的参数调节过程,提高系统的自适应性。最后,在MATLAB/Simulink中搭建仿真模型,验证了该控制系统的可行性和优越性。
At present, controllers of MMC mostly adopt the double closed loops PI control system with voltage andcurrent loop based on d-q coordinate, and the sliding-mode control strategy hasn＇t yet been used to MMC controldue to its unique pulse generation style. After in-depth study of the two control strategies, this paper proposes anew sliding-mode control system, which reduces the PI regulation link, simplifies the debugging of parametersand improves the adaptiveness of the system. Finally, a simulation model is constructed in MATLAB/Simulink andthe simulation results validate the feasibility and superiority of the proposed control strategy.
出处
《华东交通大学学报》
2015年第4期85-89,116,共6页
Journal of East China Jiaotong University
基金
国家自然科学基金项目(51367008)
关键词
模块化多电平换流器
高压直流输电
滑模控制
双闭环
自适应性
modular multilevel converter
high voltage direct current
sliding-mode control
double closed loop
adaptiveness
