电测与仪表2017，Vol.54Issue(5)：85-90,6.
基于线性二次型最优控制理论MMC控制器设计
Controller designing of MMC based on linear quadratic optimal control theory
摘要
Abstract
The control strategy of modular multilevel converter (MMC) generally adopts double closed loops PI control,while there is no fixed way to design the PI parameters and the adjustment is difficult.This paper presents a control strategy which is based on linear quadratic optimal (LQR) theory.The strategy has such advantages as simple parameters,quick response and strong adaptability etc.The LQR control is used to replace the inner ring of the double closed loop control.In order to eliminate the steady-state errors of LQR control,the integral control is added to the LQR,constitute the linear quadratic optimal control strategy (LQRI).Finally,the MMC-HVDC systems are simulated in MALAB/Simulink,the control performances of the LQRI controller are compared to the double closed loops PI control.The simulation results validate the feasibility and superiority of the proposed control strategy.关键词
MMC/双闭环控制/高压直流输电/LQRI控制Key words
MMC/double closed loop/high voltage DC transmission/LQRI control分类
信息技术与安全科学引用本文复制引用
宋平岗,游小辉,罗剑,章伟,林家通..基于线性二次型最优控制理论MMC控制器设计[J].电测与仪表,2017,54(5):85-90,6.基金项目
国家自然科学基金资助项目(51367008) （51367008）
