中低速磁浮车用直线感应电机次级电导率变化对控制转差频率的影响研究  

Characteristics and Control Slip-Frequency of Linear Induction Motor for Mid-Low Speed Maglev Train Considering Secondary Conductor's Conductivity Change

作　　者：张德伟[1,2] 郭小舟[1,2] 孔令星[1,2] 何飞[1,2] 

机构地区：[1]磁浮技术与磁浮列车教育部重点实验室,四川成都610031 [2]西南交通大学电气工程学院,四川成都610031

出　　处：《电机与控制应用》2016年第7期16-20,共5页Electric machines & control application

摘　　要：中低速磁浮车用单边直线感应电机的次级导电板通常由铝板构成,但由于机械强度等要求,所用的不是纯铝,而是铝合金。运用等效电路计算和有限元仿真的方法,探讨了直线感应电机在恒转差频率控制模式下,导电板电导率确定后如何选取合适的控制转差频率。分别以法向力在零附近和在恒功率阶段使磁浮车工作在推力最大值点作为选择最优转差频率的依据,得到了不同电导率下转差频率的最优配置。有限元仿真结果表明,根据次级电导率的不同,选择不同的控制参数能提高直线感应电机性能。Secondary conductor of single-sided linear induction motors were usually made up of aluminum plate. But because of the requirements such as mechanical strength, pure aluminum was inappropriate. In practice, usually used aluminum alloy. The appropriate selection of slip-frequency was analyzed based on constant slip frequency control through numerical and finite element method（FEM）. Respectively discussed the minimum normal force slip- frequency and the optimum thrust slip-frequency under the different conductivity, and experimental results verified that according to the different secondary electrical conductivity to choice different control parameters could improve the performance of linear motor.

关 键 词：直线感应电机 有限元仿真 推力法向力 次级电导率 转差频率 

分 类 号：TM359.4[电气工程—电机]