文档名：双有源全桥变换器无电流传感器鲁棒预测控制
摘要：该文以双有源全桥(DAB)DC-DC变换器为主要研究对象,针对传统比例积分控制动态响应慢及采用既有预测控制对量测噪声和参数敏感的缺陷,提出一种基于无电流传感器模型预测控制(CS-MPC)策略.首先构建双有源全桥DC-DC变换器的预测模型,分别针对变换器启动阶段与暂态过程提出基于模型预测控制(MPC)的动态优化策略;然后定量分析DAB变换器对模型参数和采样精度的敏感性,结合卡尔曼滤波算法构建其状态空间模型,在无电流传感器的情况下实现系统的鲁棒预测控制;最后在实验样机上通过实验验证所提方法的有效性.实验结果表明:与传统控制策略相比,所提方法能够实现低电流应力下的快速启动,且动态响应性能明显改善.此外,所提方法无需电流传感器数据,即对测量噪声脱敏;在参数变化下的鲁棒性能较传统预测控制显著提升.
Abstract：Withthedevelopmentofrenewableenergypowergeneration,electrifiedtransportation,andenergystoragesystems,thepowersystemisenteringanewstageofcoordinatedandoptimizedoperationofsource-grid-load-storage.Theenergyrouterbasedonpowerelectronicdevicescanflexiblyaccessandefficientlyusevariousrenewableenergysources,whichhasbecomethecoreequipmentofthenewpowergrid.Thedualactivefull-bridge(DAB)DC-DCconverterhastheadvantagesofhighpowerdensity,bidirectionalenergytransmission,naturalelectricalisolation,andeasyrealizationofsoftswitching.Therefore,ithasgraduallybecomeoneoftheimportanttopologiesontheDCsideofenergyrouters.Inthenewpowergrid,theincreasedintegrationofrenewableenergysourcespresentschallengesofcomplexoperatingconditionsinpowersystemsandfrequentswitchingofvariousenergystorageequipment.Therefore,energyroutersmusthavegooddynamicperformance.ThetraditionalPIcontrolemployedinDABconvertersystemstendstoprolongdynamicperformanceduetothelimitationoftheequivalentlow-passfilteringcharacteristicsofthecontroller,whichhasbecomeabottleneckforthedynamicimprovementoftheDABconverter.Thispaperproposesawholeprocessmodelpredictivecontrolstrategy.Firstly,thepredictionmodeloftheDABconverterisestablished.Forthestart-upprocessoftheDABconverter,thedynamicperformanceoptimizationproblem,formulatedasanequalityconstraintoptimizationproblem,issolvedbyKKTconditions.ForthetransientprocessoftheDABconverter,theoptimalphaseshiftratioisdeterminedbasedonthemathematicalanalysisofthecostfunction.TheabovewholeprocessmodelpredictivecontrolstrategycaneffectivelyimprovethedynamicperformanceoftheDABconvertersystem.However,whenapplyingtheMPCtotheDABconvertersystem,thehighrequirementsonmodelparametersandsamplingaccuracyneedtobeconsidered.Therefore,acurrentsensorlessrobustcontrolstrategybasedontheKalmanfilteralgorithmisproposed.TheDABconvertersystem'sdiscretestatespacemodelandstateestimationmodelareestablished.Thesystemstatevariablesarereconstructed,andtheobservationcoefficientsareimprovedtolinearizethesystem.TheoptimalestimationvalueisobtainedaccordingtotheKalmanfilterprinciple,andthesensorlessrobustpredictivecontrolisrealized.Insummary,thispaperproposesawholeprocessmodelpredictivecontrolstrategyfortheDABconvertersystem,providingadetailedanalysisofmodelparametersensitivityandsamplingaccuracyundertheMPCstrategy.AcurrentsensorlessrobustpredictivecontrolstrategybasedontheKalmanfilterisproposed.Thetheoreticalanalysisandexperimentalverificationoftheproposedmethodrevealthefollowingadvantages.(1)Comparedwiththeclassicaltwo-stagestart-upstrategyandPIcontrolstrategy,theproposedfull-processmodelpredictivecontrolstrategygreatlyimprovesthedynamicperformanceoftheDABconvertersystemduringstart-upspeedandtransientprocesses.(2)Theproposedcurrent-sensorlessrobustpredictivecontrolstrategycanmaintaingooddynamicperformancewithoutacurrentsensor,overcomingtheparameterdependenceoftheMPCstrategy.Theproposedcontrolstrategyisrobusttomodelparametererrorandsamplingnoise.
作者：孙孝哲 张祯滨 韩明昊 李真 刘晓哲Author：SunXiaozhe ZhangZhenbin HanMinghao LiZhen LiuXiaozhe
作者单位：山东大学电气工程学院济南250061
刊名：电工技术学报 ISTICEIPKU
Journal：TransactionsofChinaElectrotechnicalSociety
年，卷(期)：2024, 39(10)
分类号：TM46
关键词：双有源全桥 DC-DC 变换器 模型预测控制 动态响应提升 无电流传感器控制鲁棒控制
Keywords：DualactivebridgeDC-DCconverter modelpredictivecontrol dynamicresponseenhancement currentsensorlesscontrol robustcontrol
机标分类号：TM721TM46TM933
在线出版日期：2024年5月31日
基金项目：深圳市科技计划，广东省基础与应用基础研究基金，国家自然科学基金，国家自然科学基金，国家自然科学基金双有源全桥变换器无电流传感器鲁棒预测控制[
期刊论文] 电工技术学报--2024, 39(10)孙孝哲 张祯滨 韩明昊 李真 刘晓哲该文以双有源全桥(DAB)DC-DC变换器为主要研究对象,针对传统比例积分控制动态响应慢及采用既有预测控制对量测噪声和参数敏感的缺陷,提出一种基于无电流传感器模型预测控制(CS-MPC)策略.首先构建双有源全桥DC-DC变换器的...参考文献和引证文献
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