电力系统及其自动化学报ProceedingsoftheCSU-EPSA第35卷第4期2023年4月Vol.35No.4Apr.2023基于频域无源性的并网逆变器前馈相位补偿策略李志军1，刘洪佶2，张家安1，杨梦伟2（1.省部共建电工装备可靠性与智能化国家重点实验室（河北工业大学），天津300130；2.河北工业大学人工智能与数据科学学院，天津300130）摘要：针对基于频域无源性设计的LCL型并网逆变器接入弱电网后可能会引发高频段谐波振荡问题，设计一种改进的并网逆变器前馈相位补偿策略。首先对LCL型并网逆变器的无源性及并网系统的相角裕度进行分析；然后提出一种改进的并网逆变器控制策略，通过附加超前相位补偿的PCC点电压前馈策略，保证系统无源性以及输出阻抗的相角裕度，避免发生高频段的谐波振荡，提高弱电网条件下并网逆变器系统的稳定性；最后通过仿真验证了所提方法的有效性。关键词：频域无源性；并网逆变器；弱电网；谐波振荡；电压前馈；相角裕度中图分类号：TM464文献标志码：A文章编号：1003-8930（2023）04-0132-08DOI：10.19635/j.cnki.csu-epsa.001098Frequency-domainPassivityBasedFeed-forwardPhaseCompensationStrategyforGrid-connectedInverterLIZhijun1，LIUHongji2，ZHANGJia’an1，YANGMengwei2（1.StateKeyLaboratoryofReliabilityandIntelligenceofElectricalEquipment（HebeiUniversityofTechnology），Tianjin300130，China；2.CollegeofArtificialIntelligenceandDataScience，HebeiUniversityofTechnology，Tianjin300130，China）Abstract:AimedattheproblemthatanLCLgrid-connectedinverterbasedonfrequency-domainpassivitydesignmaycausehigh-frequencyharmonicoscillationswhenitisconnectedtoaweakgrid，animprovedfeed-forwardphasecom⁃pensationstrategyforthegrid-connectedinverterisdesigned.First，thepassivityoftheLCLgrid-connectedinverterandthephasemarginofthegrid-connectedsystemareanalyzed.Then，animprovedcontrolstrategyforthegrid-con⁃nectedinverterisproposed，inwhichthePCCvoltagefeed-forwardstrategywithadditionalleadphasecompensationen⁃suresthepassivityofthesystemandthephasemarginofoutputimpedance，thusavoidingtheoccurrenceofhigh-fre⁃quencyharmonicoscillationsandimprovingthestabilityofthegrid-connectedinvertersystemunderweakgridcondi⁃tions.Finally，theeffectivenessoftheproposedmetho...
