第2卷第1期Vol.2No.12023年2月JournalofArmyEngineeringUniversityofPLAFeb.2023共高频母线多端口电力电子变压器启动及预充电控制策略文武松1,王璐2,金丽萍1,杨贵恒1,申新楼3,张颖超1(1.陆军工程大学通信士官学校,重庆400035;2.重庆第二师范学院数学与信息工程学院,重庆400065;3.66072部队,北京100144)摘要:共高频母线电力电子变压器(high-frequency-bus-basedpowerelectronictransformer,HFB-PET)的内部电磁耦合关系复杂、各端口工作模式灵活多样,必须采用性能优越、适应性强的控制策略确保其功能单元有序上电和正常启动。现有启动策略一般针对共直流母线PET而设计,对其预充电过程缺少数学建模,在实际应用中面临不确定性且很难直接推广应用于多端口HFB-PET。在不改变HFB-PET主电路拓扑的前提下,通过设置启动优先级和“主电源”端口的方式设计了一套分步启动流程,适用于HFB-PET的任意工况。另外,还设计了一种基于占空比递增的预充电策略,并对初始占空比和占空比增量进行了数学描述,为预充电控制的实施提供了理论支撑。最后通过仿真和实验验证了所提启动及预充电策略的有效性。所提控制方法无需新增额外设备且不影响HFB-PET的稳态特性,具备无浪涌电流、工况适应性强等优势。关键词:电力电子变压器;高频母线;启动策略;占空比递增中图分类号:TM721DOI:10.12018/j.issn.2097-0730.20220122001Start-UpandPre-chargingControlStrategyforMulti-portHigh-Frequency-Bus-BasedPowerElectronicTransformerWENWusong1,WANGLu2,JINLiping1,YANGGuiheng1,SHENXinlou3,ZHANGYingchao1(1.CommunicationsNCOAcademy,ArmyEngineeringUniversityofPLA,Chongqing400035,China;2.SchoolofMathematicsandInformationEngineering,ChongqingUniversityofEducation,Chongqing400065,China;3.Unit66072ofPLA,Beijing100144,China)Abstract:Forahigh-frequency-bus-basedpowerelectronictransformer(HFB-PET),theelectromag-neticcouplingrelationshipbetweenitsinternalmodulesisverycomplex,andtheworkingmodeofeachportoftenneedstobeflexiblychangedaccordingtotheexternallyconnectedpowersupplyorload.There-fore,acontrolstrategywithsuperiorperformanceandstrongadaptabilitymustbeadoptedtoensuretheorderlypower-onandnormalstart-upofitsfunctionalunits.Existingstart-upstrategiesaregenerallyde-signedfordirect-current-bus-basedPET,whichlacksthemathemat...
