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<装备制造技术)200s年第4期
汽车电机网4系统实时仿真实验
基于dsPACE单板控制器Dsl104和集成开发平台MAT-LAB/Simulinl【,lUw进行系统全数字实时仿真实验。爪极同步发电机为12极电机,额定电流为120A。
图3是转速=314rad/a,励磁电流指令值=3A,输出额定线电压的条件下,直流负载电流也在0A到60A之间突变时,系统动态响应响应的示波图。
当负载电流由0A突加到60A时(模拟突加负载),直流输出电压‰最大下降到38V,经过约13ms恢复到42V。当负载电流由60A突减到0A时(模拟突卸负载),直流输出电压udc最大上升到46V,经过约lOms恢复到42V。这说明该发电系统具有良好的动态电压抑制能力。电机定子电流为正弦波(叠加幅值很低的开关纹波),电机绕组的谐波含量很小,功率因数为l,提高了发电机的效率。
圈3突加负载时系统的响应特性。图中信号:1.定子电流i鞠
(50Ndiv):2.直流输出电压udc(20Wdiv)5结论
本文采用磁场定向控制方法和电势一负载匹配技术,实现42V汽车发电系统高性能控制。在负载100%(2.5kW)突变时,动态电压恢复时间小于15ms,整流器输入、输出电压非常稳定。与传统14V发电机系统相比,该系统显著地减低电机绕组的谐波,提高发电机的功率因数、输出功率和效率,降低油耗和尾气排放。
参考文献:
【1】CaliskanV.A.Adual/high-voltageautomotiveelectricalpowersystemwith¥Hp4Ⅱiortransientpe幽咖觚傀【D】.DepartmentofElectricalEn-gin喇119andComputerScience,MassachusettsInstitute《Technd-ogy,2000.
【2】ComaneseuM,KeyhaniA,andDniM.DesignandAnalysis《42一VPermanent-MagnetGeneratorforAutomotiveApplications叨.IEEETram.011EnergyConversion.2003,18(1):107-112.
【3】高景德,王祥珩,李发海.交流电机及其系统的分析(第二版)tM】.清华大学出版社,2005.
【4】LeonhardW.ControlofElectricalDrives(3rdEdifion)[M].Berlin,Germany:Springer-Verbs,2001
f5】Mar&Jasi^ski.DirectPowerandTorqueControldAC/DC/ACCon-verier-FedInductionMotorDrives[D].FacultyofElectricalEngineer-ing,WarsawUniversityofTechnology,2005.
Field--OrientedControlof42—-VAutomotivePowerGenerationSystemwithClaw-Pole
SynchronousGeneratorandPWMRectifier
MIShu-liang.LUZi-guang
(SchoolofElectricalEngineering,GuangxiUniversity,Nannin9530004)
Abstract:Inrecentyears.tlIedemandforfillincreasednumberofvehiclefunctionsbylegislationandcustomerexpectationshasintroducedmanyelectroniccontrolsystems
andelectricaldrivenunitsinvehiclesandhasresultedinsteadilyincreasingelectricalloads.Thistrendn卜quiresstretchingthecapabilitiesofpresenton-boardpowersupplies.Today’sclaw讪synchronousgeneratorforthe14一Vpowemetisnotabletomeettheforeseeablefuturepowerrequirementsduetoitsinherentdesignlimitations.Anewhigh-power,high-efficiencyalternatorsystemisneededtomc弛,ttheserequirements.Forthispurpose,a
claw-polesynchronousgeneratorwithpulse-width-modulation(PWM)recfi—tierregulatedat42一VwhichchargesbatteryanddeliversPowertotheloadsisdes
cribedinthispaper.Aninduced-voltage-load-matehingtechniqueisintroducedandusedinconjunctionwithrotor-field-orientedcontrolprinciple.Theexcitationandstatorcurrentsa地variedtocontroltheacinduced-voltageofthegeneratorandthedcoutputvoltageofrectifierundertheconditionsofvariable邓鼎缸anddifferentloadtypes.Moreover,inherentload-dumpandjump-startchargingtransientsuppressionfeaturesa∞achieved.ThepIq帕sedapproaches8reeval—uatedbytheexperimentalresultsandcanbeusedtoimproveperformanceoftoday’Salternatorsystem.
Keywords:AutomotivePowergeneration;claw-polesynchronousgenerator;PWMrectifier;field-orientedcontrol
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