S3【Dong-Choon Lee】Recent Advances in Multilevel Converters.pdf

1、PLENARYRECENT ADVANCES IN MULTILEVEL CONVERTERSTopologies,Control,and ApplicationsProf.Dong-Choon LeeYeungnam University,South Korea作者授权中国电源学会发布，未经作者同意禁止转载2/40PEAS 2025Geographical Locationof Yeungnam University(嶺南大學校)作者授权中国电源学会发布，未经作者同意禁止转载3/40PEAS 2025Outline of PresentationIntroductionTopologies

2、of MLCsModulation TechniquesControl MethodsApplications of MLCsSummary作者授权中国电源学会发布，未经作者同意禁止转载INTRODUCTION作者授权中国电源学会发布，未经作者同意禁止转载5/40PEAS 2025Applications of Power Electronic ConvertersPower converters exist everywhere in the real world.Electric Motor DrivesRenewable EnergyElectric VehicleData Center

3、Home AppliancesHVDC Transmission作者授权中国电源学会发布，未经作者同意禁止转载6/40PEAS 2025 Multilevel converters(MLCs)Voltage levels more than two can be generated.The Number of IEEE Publications on MLCsTwo-levelThree-levelFour-levelFive-levelo High power&voltage capability(for medium/high-voltage systems)o Improved outp

4、ut quality(low THD,reduced filters)o Lower device stress(reduced dv/dt&EMI)o Modularity&scalability(easier maintenance,fault-tolerant design)Necessity of Multilevel Converters作者授权中国电源学会发布，未经作者同意禁止转载TOPOLOGIES of MLCs作者授权中国电源学会发布，未经作者同意禁止转载8/40PEAS 20251979199219962003Neutral-point Clamped(NPC)Flying

5、 Capacitor(FC)Cascaded H-Bridge(CHB)Modular Multilevel Converter(MMC)PNxEEE+VDC(3E)2EPNx+VDC(3E)E+xSMSMSMSMPN+VDC+Sub-Module+FB-1FB-2FB-n+Full Bridge Simple structure Capable of extension to higher level Large number of diodes Difficulty in capacitor voltage balancing Modular structure Natural capac

6、itor voltage balancing Large number of FCs Higher power losses High inrush current and pre-charging issues Highly modular and scalable No clamping diodes and FCs Fault-tolerant capability Isolated DC sources required Complex control and communication Excellent scalability Fault-tolerant capability N