并联液压混合动力装载机系统配置和能源控制策略研究.doc

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1、ResearchonthesystemconfigurationandenergycontrolstrategyforparallelhydraulichybridloaderSunHui,,JingJunqingJiangsuXuzhouConstructionMachineryResearchInstitute,Jiangsu,ChinaAccepted30October2009.Availableonline22November2009.http://dx.doi.org/10.1016/j.autcon.2009.10.006,HowtoCiteorLin

2、kUsingDOIPermissions&ReprintsAbstractAimedatthefrequentstarts/stopsoperationcharacteristicsoftheloader,anenergysavingschemewithparallelhydraulichybridsystemisproposedtoregenerateandreusethebrakingenergynormallylostinaconventionalloader.Hydraulichybridsystemisdesignedandsizedtocaptureb

3、rakingenergyfromnormal–moderatebrakingoperatingmodeswhileensureshybridsystemworkinginhigherefficiencyregion.Accordingtothehigherpowerdensitycharacteristicofhydraulichybridsystem,theregenerativebrakingstrategyandenergyreusestrategyaredesignedtocoordinateallthepowertraincomponentsinanop

4、timalmannerwhilesatisfyingperformanceconstraintsofloader.Energycontrollerusinglogicthresholdapproachisbuiltuptocontrolthedynamictransitionsamongthevariousoperationmodes.Simulationandexperimentalresultsshowtheparallelhydraulichybridloader(PHHL)effectivelyrecoveredandreusedthebrakingene

5、rgy,improvedtheworkingperformanceofloaderandeffectivelyreducedthefuelconsumption.KeywordsLoader;Hydraulichybridsystem;Brakingenergyregeneration;Energymanagement;Hydraulicpump/motor1.IntroductionWiththerisingconcerninaglobalscaleenvironmentalissue,energysavinginautomobilesisaveryimport

6、antsubject[1] and [2].Off-roadvehicleshavebeenpaidmuchattentioninthefieldofenergysavingandenvironmentprotection,forthereasonoftheirlargeapplicationquantities,highfuelconsumptionandbademissions[3].Loaderhasthecharacteristicsoffrequentstarts/stopsandlargervehicleweightwhichgeneratedsign

7、ificantamountsofbrakingenergy.Usually,thispartofenergyiswastedbythefrictionalbrakingsystemwhichcausedtheenergylossandheatgenerationinthesystem.Therefore,thebrakingenergyrecoveryandreuseisapromisingwaytoimprovefueleconomyandworkingperformanceofoff-roadvehicles[4] and [5].Thereisawealth

8、oflit