内燃机与配件www.nrjpj.cn增程器风冷电机散热方案仿真分析及测试验证毛正松,陆永卷,欧阳石坤,叶遥立(玉柴芯蓝新能源动力科技有限公司,广西南宁530000)摘要:风冷电机在小功率增程器市场有广泛的应用,特别是工程机械方面,但由于风冷方式的冷却能力相对较弱,需进行充分的散热验证。本文以一台额定功率25kW增程器用风冷电机为研究对象,首先采用流-热-固耦合模拟方法对电机壳外流场及电机各部件的温度分布和温升进行稳态仿真分析、对绕组温升进行动态仿真分析,再通过台架温升测试验证了风冷电机散热结构设计的合理性。分析结果表明该电机风冷散热方案满足散热需求,电机温升约为75℃,环境温度45℃的线圈最高温度为120℃,满足电机绝缘耐热等级为F级的要求。电机的仿真温升和实测温升基本一致,验证该风冷散热设计方案设计的可行性和仿真方法的可靠性。关键词:风冷电机;散热;增程器中图分类号:TM33文献标识码:A文章编号:1674-957X(2023)05-0027-03SimulationAnalysisandTestVerificationofanAirCooledE-MotorHeatDissipationDesignforRangeExtenderMaoZheng-song,LuYong-juan,Ou-yangShi-kun,YeYao-li(YuchaiSynLandTechnologyCompanyLimited,GuangxiNanning530000)Abstract:Aircoolede-motoriswidelyappliedinlow-powerrangeextender,especiallyinengineermachinery.How-ever,heatdissipationverificationisrequiredduetotheweakaircoolingcapacity.Inthispaper,anaircoolede-motorforrangeextenderwitharatedpowerof25kWisstudied.First,thesteady-statesimulationoftheflowfieldoutsidethee-motorshell,thetemperaturedistributionandtemperatureriseofthethee-motorpartsareperformedusingthefluid-ther-mal-solidcouplingsimulationmethod.Second,thewindingtemperatureriseisevaluatedviadynamicsimulationmethod.Last,thedesignverificationofcoolingstructureoftheaircoolede-motoriscarriedoutthroughthebenchtemperaturerisetest.Theresultsshowedthate-motordissipationperformancemeetstherequirements.Thetemperatureriseofthee-motorwas75℃.Themaximumtemperatureofthecoilwas120℃withanambienttemperatureof45℃.Thismeetstherequirementsofe-motorheat-proofclassofF.Thesimulatedtemperaturerisewasconsistentwithmeasuredtempera-turerise,whichvalidatestheheatdissipationdesignandthesimulationmethod.Keywords:Air-coolede-motor;He...
