河南城建学院本科毕业设计（论文）摘要摘要电梯是一种用于电力拖动的特殊升降设备，是现代城市生活中必不可少且应用最广泛的垂直交通运输工具。随着社会的不断发展，电梯从手柄开关操纵电梯、按钮控制电梯发展到了现在的群控电梯，为高层运输做出了不可磨灭的贡献。随着电力电子技术和计算机控制技术的飞速发展，交流变频调速技术的发展十分迅速。变频调速电梯使用了先进的PWM技术，明显改善了电梯运行质量和性能；调速范围广、控制精度高、动态性能好，舒适、安静、快捷，几乎可与直流电机相互媲美。同时也明显改善了电动机供电电源的质量，减少了谐波，提高了效率和功率因数，节能显著。本设计在采用PLC和变频器相互结合而实现电梯常规控制的基础上，通过对变频器和PLC芯片的合理选择和设计，大大提高了电梯的控制水平，并改善了电梯运行的舒适感，使电梯达到了较为理想的控制和运行效果。关键词：电梯，PWM控制，变频调速I河南城建学院本科毕业设计（论文）ABSTRACTABSTRACTSummaryelevatorisaspecialelectrictractionequipment,isindispensableinmodernurbanlife,andthemostwidelyusedverticaltransportation.Associetydevelops,elevatorfromthehandleswitchelevators,buttonscontroltheelevatortothecurrentgroupofElevator,forseniortransportationpresent.Withpowerelectronicsandcomputercontroltechnologyandtherapiddevelopment,ACinvertertechnologydevelopmentveryrapidly.VariablespeedelevatoruseadvancedPWM,significantlyimprovethequalityandperformanceelevator;speedrangewidely,control,precision,dynamicperformance,comfortable,quiet,fast,almostcomparabletotheDCmotor.Atthesametimesignificantlyimprovedmotorpowerquality,reducedharmonic,whichimprovestheefficiencyandpowerfactor,energy-savingsignificantly.ThisdesigninusePLCandinverterelevatoronthebasisofconventionalcontrol,throughtheinverterandPLCchipdesign,selectionandgreatlyimprovestheelevatorcontrollevels,andimprovesthecomfort,Elevatormakeselevatorreachesmoreidealcontrolandoperatingresults.Keywords:elevator,PWM,frequencyII河南城建学院本科毕业设计（论文）目录目录摘要.................................................................1ABSTRACT.............................................................21引言................................................................12概述................................................................22.1电梯的概述....................................................22.1.1电梯的概念...............................................22.1.2电梯的分类...............................................22.1.3电梯的工作原理...........................................32.2电梯的基本结构................................................42.2.1曳引系统.................................................52.2.2导向系统.................................................52.2.3门系统...................................................52.2.4轿厢.....................................................52.2.5重量平衡系统.............................................62.2.6电力拖动系统.............................................62.2.7电气控制系统.............................................62.2.8安全保护系统.............................................63电梯电力拖动控制系统................................................73.1变频调速电梯系统运行原理......................................73.2变频器........................................................83.2.1变频调速原理.............................................83.2.2变频器组成、工作原理及其分类.............................83.2.3变频器机型选择........................................
