CAJ | 학술논문

模块化多电平换流器（modular multilevel converter，MMC）是一种新型的电压源换流器，已经成功应用于高压直流输电领域，发展前景广阔，然而桥臂环流的存在影响了MMC的工作特性和损耗，对环流进行抑制是MMC工程应用必须解决的问题。考虑到系统非线性、鲁棒性和动态性能的要求，引进自抗扰控制（active disturbance rejection control，ADRC）技术，基于自抗扰控制技术设计了一种 MMC 环流抑制器（circulating current suppressing controller， CCSC），所设计环流抑制器对MMC 的环流详细模型依赖小，并具有优异的适应性和鲁棒性。最后通过在PSCAD/EMTDC环境下建立的两端MMC系统，仿真验证了所提出的环流抑制器的有效性。
모괴화다전평환류기（modular multilevel converter，MMC）시일충신형적전압원환류기，이경성공응용우고압직류수전영역，발전전경엄활，연이교비배류적존재영향료MMC적공작특성화손모，대배류진행억제시MMC공정응용필수해결적문제。고필도계통비선성、로봉성화동태성능적요구，인진자항우공제（active disturbance rejection control，ADRC）기술，기우자항우공제기술설계료일충 MMC 배류억제기（circulating current suppressing controller， CCSC），소설계배류억제기대MMC 적배류상세모형의뢰소，병구유우이적괄응성화로봉성。최후통과재PSCAD/EMTDC배경하건립적량단MMC계통，방진험증료소제출적배류억제기적유효성。
Modular multilevel converter (MMC)is a novel voltage sourced converter,which has been successfully applied in HVDC transmission and has broad development prospects.But the working performance and system losses of MMC are directly affected by the existing arm circulating current,so the circulating current suppressing is a problem needed to be resolved for the MMC engineering applications.The active disturbance rejection control (ADRC)technology was introduced in response to the requirements of system non-linearity,robustness and dynamic performance.A circulating current suppressing controller (CCSC ) for MMC with good adaptation and robustness was designed based on ADRC technology,which did not depend on the detailed model of arm circulating current.Finally,the simulation results of the MMC system with using PSCAD/EMTDC verified the validity of the proposed CCSC.