ISSN1006-7167CN31-1707/TRESEARCHANDEXPLORATIONINLABORATORY第42卷第2期Vol.42No.22023年2月Feb.2023DOI:10.19927/j.cnki.syyt.2023.02.029基于类箕舌线的自适应变步长MPPT算法设计倪瓒,李浩楠,原晓楠(西安交通大学电气工程学院,西安710049)摘要:为进一步提高光伏发电系统的稳定性和发电效率,使用最大功率点跟踪技术(MPPT)使输出功率最大化。对此提出一种基于类箕舌线的自适应变步长扰动观测法,该方法综合考虑跟踪速度、振荡幅度和计算复杂度等因素,分析了类箕舌线函数中参数α和β的不同取值对算法的影响。应用Matlab/Simulink分别在改变光照强度和温度两种情况下进行仿真,并与定步长扰动观测法进行对比。仿真结果表明,所提算法明显提高了跟踪速度,改善了靠近MPP时功率的振荡问题,相比于传统算法具有明显优越性。算法计算复杂度小,跟踪性能好,可应用于算力较小的MPPT控制器中。关键词:光伏发电;最大功率点跟踪技术;箕舌线函数;扰动观测法中图分类号:TM930.2文献标志码:A文章编号:1006-7167(2023)02-0142-05DesignofAdaptiveVariableStepMPPTAlgorithmBasedonVersoriaFunctionNIZan,LIHaonan,YUANXiaonan(SchoolofElectricalEngineering,Xi’anJiaotongUniversity,Xi’an710049,China)Abstract:Inordertofurtherimprovethestabilityandpowergenerationefficiency,theoutputpowerofthephotovoltaicpowergenerationsystemismaximizedbyMPPT.Anadaptivevariable-stepperturbationobservationmethodbasedonversoriafunctionisproposedinthepaper.Theeffectofdifferentvaluesofparametersαandβintheversoriafunctionisanalyzed,andthetrackingspeed,oscillationamplitudeandcomputationalcomplexityareanalyzed.Matlab/Simulinkisappliedtosimulatethealgorithmundertwocasesofchangingsolarintensityandtemperature,andcomparetheresultswiththefixed-stepperturbationobservationmethod.ThesimulationresultsshowthattheimprovedalgorithmsignificantlyincreasesthetrackingspeedandimprovesthepoweroscillationproblemnearMPP,whichissignificantlysuperiorcomparedwiththetraditionalalgorithm.Thealgorithmhassmallcomputationalcomplexityandgoodtrackingperformance,andcanbeappliedtoMPPTcontrollerswithsmallcomputingpower.Keywords:photovoltaicpowergeneration;maximumpowerpointtrac...