简介:由于世界石油资源日趋贫乏和大气污染日益严重,因此即大量消耗能源又产生大量有害废气的传统汽车,自然而然成了全世界人类关注的焦点。而世界现代生活中已经使现代人工作生活中离不开的汽车要受到限制,甚至取消汽车来解决上述两大难题是完全不可能的。那么怎么在利用汽车给我们工作、生活带来便利的同时,又能降低汽车油耗和净化汽车排放的尾气的难题,基于科学可持发展的基本理念,人们却不约而同的把眼光聚焦在电动汽车上面,毫无疑问叮住电动汽车来解决能源紧张和大气污染严重两大关键的确是推住了关键,解决好了这个关键人们在持续发展方面面临的巨大压力将大幅度的减缓。本文将从技术的角度探讨电动汽车在电传动、动力电池及动力结构的组合和不同工况的运行要求的合理性、科学性。
简介:摘要全球经济的低碳化发展,对汽车行业和电力行业都提出了新的要求,在汽车行业的变革就是新能源汽车,而电力行业的变革则是智能电网,随着信息产业的快速发展,今后的电动汽车和智能电网将会实现高度的信息化网络化互动化,两者有机的结合将会给人们带来一种新的能源消费方式。结合大量资料,认识到大量电动汽车在充电过程中,不仅会加剧电网系统的峰谷差,同时还会产生大量谐波分量污染电网。对于电动汽车充电过程产生谐波对电网的影响,可以选用PWM新式整流充电设备、加装滤波器、以及优化充电机的投入间隔控制策略等技术手段加以治理和控制,进而实现电动汽车充电与电网稳定运行的安全互动。
简介:Arobustslidingmodeobserverforpermanentmagnetsynchronousmotordrives,ASensorlessInitialRotorPositionEstimationSchemeforaDirectTorqueControlledInteriorPermanentMagnetSynchronousMotorDrive,Asensorlessspeedestimatorforthedirecttorquecontrolofaninteriorpermanentmagnetsynchronousmotordrive,Asensorless,stableV/fcontrolmethodforpermanent-magnetsynchronousmotordrives,Astudyonhysteresisanalysisoflinestartpermanentmagnetmotorusingpreisachmodeling,AstudyonironlossanalysismethodconsideringtheharmonicsofthefluxdensitywaveformusingironlosscurvestestedonEpsteinsamples。
简介:Acombinednumericalandanalyticalmethodforcalculatingthetorqueofanasynchronousmotorwithasolidrotor;Amathematicalmodelofanasynchronousmotorinageneralizedorthogonalsystemofcoordinates;ANEWTECHNIQUEOFTHEREPEATEDPWMCOMMANDDESTINEDTOTHEPHOTOVOLTAICPUMPINGSYSTEM;ACTIONOFTHECONDENSERCAPACITYONTHEINDICATIONSOFSINGLEPHASEASYNCHRONOUSMOTORQUALITY;Ananalysisofvibrationsofanasynchronousmotorwhenthereisadoublednumberofphasesofthepowersupplyvoltage;Aninvestigationofthemethodsofsuppressingsynchronousandasynchronousadditionaltorquesincapacitormotorsofincreasepowerandtheirautomateddesign;
简介:3-Dmagneticfieldanalysisofpermanentmagnetmotorconsideringmagnetizingdemagnetizingandeddycurrentloss;AcomparativeanalysisoffuzzylogicandPIspeedcontrolinhigh-performanceACdrivesusingexperimentalapproach;Acurrentsensorlessdrivesystemofasynchronousmotorwithalow-resolutionpositionsensor;ADesignProcedurefortheApplications-SpecificElectricMotors;Adirecttorque-controlledinteriorpermanent-magnetsynchronousmotordrivewithoutaspeedsensor;Adiscrete-timepredictivecurrentcontrolforPMSM;
简介:Asynchronousmotoroverturnwithavectorialcontrolsystem,Developmentsonbearinglessdrivetechnology,Identifyingtheasynchronousmotorinnervalues,On-lineestimationofquantitiesusingartificialneuralnetworks,Researchonflywheelenergystoragesystemforpowerquality,SIMULATIONOFAPVPANEL-INVERTERMOTOPUMPASSOCIATIONINPHOTOVOLTAICPUMPINGSYSTEMS,Simulationoffieldorientationcontrolforatwo-phaseasynchronousmotor。