第44卷第2期2023年6月D0I:10.13340/j.jsmu.2023.02.018上海海事大学学报JournalofShanghaiMaritimeUniversityVol.44No.2Jun.2023文章编号：1672-9498(2023)02-0111-08基于改进NLM的模块化多电平变换器在船舶岸电系统中的应用王灿，郭焱，薛冬，王宇恒（上海海事大学物流工程学院，上海201306)摘要：随着船舶功率需求的不断增加，船舶岸电系统也从低压岸电系统向高压岸电系统发展，基于模块化多电平变换器（modularmultilevelconverter，MMC）设计6.6kV/60Hz的船舶高压岸电系统。针对传统最近电平逼近调制（nearestlevelmodulation，NLM）策略下MMC输出电压质量低、环流谐波含量大及船舶岸电系统稳定性差的问题，提出采用改进NLM策略、无差拍环流抑制策略和虚拟同步发电机(virtualsynchronousgenerator，VSG)控制技术相结合的新型控制方法。对所设计的MMC-VSG船舶岸电系统模型和控制方法进行仿真。仿真结果表明，所提出的控制方法能有效提高船舶岸电系统的电能质量，且系统稳态性能和动态性能良好，可为船舶高压岸电系统的设计提供一定的参考。关键词：船舶岸电系统；模块化多电平变换器（MMC）；最近电平逼近调制（NLM）；无差拍环流抑制；虚拟同步发电机(VSG)中图分类号：U653.95;U665.1basedonimprovedNLMinshore-to-shippowersupplysystem文献标志码：AApplicationofmodularmultilevelconvertersWANGCan,GUOYi,XUEDong,WANGYuheng(LogisticsEngineeringCollege,ShanghaiMaritimeUniversity,Shanghai201306,China)Abstract:Withthecontinuousincreaseofshippowerdemand,theshore-to-shippowersupplysystemalsodevelopsfromthelow-voltageshore-to-shippowersupplysystemtothehigh-voltageshore-to-shippowersupplysystem.Therefore,a6.6kV/60Hzhigh-voltageshore-to-shippowersupplysystemisdesignedbasedonmodularmultilevelconverters(MMC).AimingattheproblemsoflowqualityofMMCoutputvoltage,largecirculatingcurrentharmonicscontentandpoorstabilityoftheshore-to-shippowersupplysystemunderthetraditionalnearestlevelmodulation(NLM)strategy,anewcontrolmethodcombiningtheimprovedNLMstrategy,thedeadbeatcirculatingcurrentsuppressionstrategyandthevirtualsynchronousgenerator(VSG)controltechnologyisproposed.ThesimulationiscarriedoutonthedesignedMMC-VSGshore-to-shippowersupplysystemmodelandcontrolmethod.Thesimulation...
