Fault Ride-through Hybrid Controller for MMC-HVDC Transmission System via Switching Control Units Based on Bang-bang Funnel Controller  

作　　者：Yang Liu Zehui Lin Chenying Xu Lei Wang 

机构地区：[1]School of Electric Power Engineering,South China University of Technology,Guangzhou,510640,China

出　　处：《Journal of Modern Power Systems and Clean Energy》2023年第2期599-610,共12页现代电力系统与清洁能源学报（英文）

基　　金：supported in part by the State Key Program of National Natural Science Foundation of China (No.U1866210);Young Elite Scientists Sponsorship Program by CSEE (No.CSEE-YESS-2018007);Science and Technology Projects in Guangzhou (No.202102020221)。

摘　　要：This paper proposes a fault ride-through hybrid controller(FRTHC)for modular multi-level converter based high-voltage direct current(MMC-HVDC)transmission systems.The FRTHC comprises four loops of cascading switching control units(SCUs).Each SCU switches between a bang-bang funnel controller(BBFC)and proportional-integral(PI)control loop according to a state-dependent switching law.The BBFC can utilize the full control capability of each control loop using three-value control signals with the maximum available magnitude.A state-dependent switching law is designed for each SCU to guarantee its structural stability.Simulation studies are conducted to verify the superior fault ride-through capability of the MMC-HVDC transmission system controlled by FRTHC,in comparison to that controlled by a vector controller(VC)and a VC with DC voltage droop control(VDRC).

关 键 词：Bang-bang funnel controller(BBFC) fault ride-through hybrid controller modular multi-level converter based high-voltage direct-current(MMC-HVDC) switching control unit 

分 类 号：TM721.1[电气工程—电力系统及自动化]