Electromagnetic thermal coupling and optimization of large-force electromagnetic actuators
The ohmic loss in the operation of electromagnetic actuator will cause the tempera-ture to rise,accelerate the magnet demagnetization,reduce the magnetic induction strength at the air gap and reduce the life of the actuator.In this study,the formation mechanism of ohmic loss in electromagnetic actuator is explained,the formula of eddy current loss in ohm-ic loss is derived,a double-coil electromagnetic actuator is innovatively designed to reduce eddy current loss,and the electric-magnetic-thermal multi-physical field coupling simulation is carried out.By comparing the electromagnetic field of the actuator with the temperature field,the control performance of the optimized double-coil electromagnetic actuator is greatly improved.
electromagnetic actuatorohmic losseddy current lossmulti-physical field cou-plingtemperature field
NETL
NSTL
万方数据
维普
