电力系统保护与控制2015，Vol.43Issue(19)：43-48,6.
基于微分平坦理论模块化多电平换流器环流抑制控制方法
Differential flatness based method of circulating current suppressing control for modular multilevel converter
摘要
Abstract
As the interphase circulating current exists in the three-phase bridge arm of modular multilevel converter, the differential flatness theory (DFT) based MMC circulating current suppressing controller is deduced. According to the analysis about the nature of the interphase circulating current and the definition of the DFT, it chooses the input, output and intermediate quantity of the control system, proving that the design of circulating current suppressing controller can meet the conditions of DFT. The newly designed controller could reduce the interphase circulating current in the bridge arm current, and make it closely approximate the sine wave. At last, the MMC model is simulated based on Matlab/Simulink. In the case of no impact on MMC external voltage and current, the result show that the control model is effective, which provides a new idea for the design of circulating current suppressing controller.关键词
模块化多电平换流器/非线性/相间环流/环流抑制控制器/微分平坦Key words
modular multilevel converter (MMC)/nonlinear/interphase circulating current/circulating current suppressing controller/differential flatness分类
信息技术与安全科学引用本文复制引用
宋平岗,何峰..基于微分平坦理论模块化多电平换流器环流抑制控制方法[J].电力系统保护与控制,2015,43(19):43-48,6.基金项目
国家自然科学基金(51367008) This work is supported by National Natural Science Foundation of China (No. 51367008). （51367008）
