GUANGDONG BAIYUN UNIVERSITY毕业设计题目：中小型直流电机电磁设计学生姓名：郑基乐学号：20330101031专业班级：18级机械设计制造及其自动化5班指导教师：黄玲企业导师：郑海舟二级学院：机电工程学院2022年4月摘要本文是设计一台1.5KW,1500r/min,220V,自通风冷却式效率为78%的，并励直流电动机。依据电磁负载经验值初步确定电枢直径和长度，相应地确定级数：确定电枢绕组、电枢铁芯、换向器和电刷的主要尺寸：计算空载特性曲线，电枢反应退磁磁磁动势，确定励磁绕组：确定磁路各部分的尺寸：计算损耗、效率和运行特性。确定与电磁有关的几何尺寸和绕组数据，根据电机的额定数据计算换向参数、工作特性和温升。由于良好的换向是直流电机运行的重要指标，因此在进行电磁设计中，将在换向设计以及确定电枢绕组、换向器和定子各部分设计中着重考虑保证良好换向。为便于组织生产，对于中小型直流电机都是将同类用途的各种规格组成系列，所以设计的进行将从整个系列考虑。关键词：并励直流电动机，电磁设计，磁路计算ABSTRACTThis paper is to design a 1.5kW,1500r/min,220V,efficiency of 78%self-ventilatedcooling,shunt dc motor.The diameter and length of armature are preliminarilydetermined according to the empirical value of electromagnetic load,and the seriesare determined accordingly.Determine the main dimensions of armature windings,armature core and commutator and brush;Determine the size of each part of themagnetic circuit;Calculate no-load characteristic curve,armature reactiondemagnetization emf and determine the excitation winding;Calculate loss,efficiencyand operating characteristics.According to the rated data of the motor,the geometricdimensions and winding data related to electromagnetism are determined,and thecommutation parameters,working characteristics and temperature rise are calculated.Because good commutation is an important indicator of de motor operation,so in theelectromagnetic design,will be in the commutation design and determine the armaturewinding,commutator and stator design of each part of the emphasis on ensuring goodcommutation.In order to facilitate the organization of production,for small andmedium-sized DC motors are all the same purpose of various specifications into aseries,so the design will be considered from the whole series.Keywords:Shunt dc motor,electromagnetic design,magnetic circuit calculation