双向转角电磁铁输出扭矩特性仿真分析

基于电磁场有限元仿真,探讨了双向转角电磁铁的工作机理,分析了其输出扭矩特性.针对工业应用中,双向转角电磁铁在0°位置启动时,需要较大启动电流,且在0°～90°范围内提供的输出扭矩较小,为了获得较大输出扭矩,确定最佳工作区,采用电磁场有限元分析软件Maxwell 2D/3D,对不同安匝数的双向转角电磁铁进行瞬态仿真计算,得到电磁铁转子旋转180°过程中各角度的磁场分布以及输出扭矩,探讨了其实现双向旋转的工作机理.仿真结果表明:双向转角电磁铁的最佳工作区在40°～～140°之间,输出扭矩会随着线圈安匝数的增多而增大.该仿真结果为双向转角电磁铁的工业应用提供了依据.

Simulation analysis of output torque of two-way corner electromagnet

Based on the finite element simulation,the working mechanism for the two-way angle rotating electromagnet is discussed and its output torque characteristics are analyzed.For its application in industrial production,the two-way angle rotating electromagnet starts in the 0° position,which needs a large starting current.And its output torque is small within the range of 0°-90°.Maxwell 2D/3D,which is electromagnetic finite element analysis software,is employed for transient simulation for the two-way angle rotating electromagnet which has different ampere turns to obtain the larger output torque and determine the optimum working section.The magnetic field distribution in every angle and the output torque are obtained when the electromagnet rotor rotates 180°.And the bi-directional rotation mechanism of electromagnet is discussed.The results show that the optimum working section of the two-way corner electromagnet is between 40° and 140°,the output torque increases with the ampere turns of the coil increasing.The simulation results of the two-way angle rotating electromagnet provides the basis for industrial application.