林区生态观测站光储单元协调控制器设计*曹慧颖1,刘素梅1,谢丽霞1,彭角奎1,赵泽宇1,金一凡1,刘刚2(1.北京林业大学,北京100091;2.华北电力大学,北京102206)摘要:在现有林区生态观测站中,存在着蓄电池频繁充放电影响自身寿命和系统运行效率低等问题。针对这些问题,设计了基于DSP+FPGA硬件控制架构的光储能单元协调控制器。该控制器根据林区光照特点与负荷用电需求,将光储单元与负荷的功率作为协调控制判据,采用多工作模式组合的协调控制方法,确保在系统电压稳定前提下实现尽量优先利用光伏电池直接为负荷供电,同时在光照充足时蓄电池进行下垂充电和三阶段快速充电,以均衡蓄电池SOC,提高系统续航能力。最终,经硬件在环实验,验证了所设计控制器的有效性。关键词:光储单元;协调控制器;林区生态观测站;控制模式;三阶段充电中图分类号:TM912DOI:10.19768/j.cnki.dgjs.2023.02.035DesignofCoordinatedControllerofPhotovoltaicStorageUnitofForestEcologicalObservationStation*CAOHuiying1,LIUSumei1,XIELixia1,PENGJiaokui1,ZHAOZeyu1,JINYifan1,LIUGang2(1.BeijingForestryUniversity,Beijing100091,China;2.NorthChinaElectricPowerUniversity,Beijing102206,China)Abstract:Intheexistingforestecologicalobservationstations,therearesomeproblems,suchasfrequentbatterychar-ginganddischarging,affectingtheservicelifeandlowsystemoperationefficiency.Tosolvetheseproblems,acoordinatedcontrollerofopticalenergystorageunitbasedonDSP+FPGAhardwarecontrolarchitectureisdesignedinthispaper.Ac-cordingtothelightingcharacteristicsandloadpowerdemandoftheforestarea,thecontrollertakesthepoweroftheopti-calstorageunitandtheloadasthecoordinatedcontrolcriterion.Thecoordinatedcontrolmethodofmultiworkingmodecombinationisadoptedtoensurethatunderthepremiseofstablesystemvoltage,priorityisgiventotheuseofphotovol-taiccellstodirectlysupplypowertotheload.Atthesametime,whenthelightissufficient,thebatterywillbesaggedandchargedrapidlyinthreestagestobalancethebatterySOCandimprovethesystemendurance.Finally,hardware-in-the-loopexperimentsverifytheeffectivenessofthedesignedcontroller.Keywords:photovoltaicstorageunit;coordinationcontrollers;forestecologicalobservationstations;controlmode;three-stagechar...
