CAJ | 학술논문

针对直线感应电机特有的边缘效应对气隙磁场引起的畸变以及法向力不易解析计算的问题,通过电磁场分析量化表征纵向边缘效应对磁场的负面作用,并使用有效初级绕组相感应电势的方式得到等效系数.对导磁层和导电层的横向边缘效应,分别给出了相应的修正系数.给出计算直线感应电机运动方向磁密与法向力的解析方法.仿真计算与实验结果的比较表明:该方法能够准确定量计算不同气隙和供电频率下的推力和法向力的变化曲线,通过推力与速度、推力与气隙、法向力与速度等曲线,计算方法物理意义明确、计算简单,能够满足工程计算的需要.
침대직선감응전궤특유적변연효응대기극자장인기적기변이급법향력불역해석계산적문제,통과전자장분석양화표정종향변연효응대자장적부면작용,병사용유효초급요조상감응전세적방식득도등효계수.대도자층화도전층적횡향변연효응,분별급출료상응적수정계수.급출계산직선감응전궤운동방향자밀여법향력적해석방법.방진계산여실험결과적비교표명:해방법능구준학정량계산불동기극화공전빈솔하적추력화법향력적변화곡선,통과추력여속도、추력여기극、법향력여속도등곡선,계산방법물리의의명학、계산간단,능구만족공정계산적수요.
Aming to the airgap magnetic field distortion caused by end effect of linear induction motors and the calculation analysis of the normal force,longitudinal end effect through equivalent electromagnetic field(EMF) is considered.Transverse edge effects are considered by different modified coefficients when the secondary is magnetizer or conductivity,and thrust and normal force are computed.Finally,the thrust and normal force are measured by a model linear induction motor under different air gap and current frequency.The experiment results show that the thrust and normal force which are computed are close to these which are measured.