Thermal analysis of an electromagnetic linear actuator

This article presents a new electromagnetic linear actuator applied in the electromagnetic-driven valve train. To clarify the actuator’s temperature rise and heat distribution, a heat transfer model was established by analyzing the complex heat exchange inside the actuator theoretically. A two-way coupling finite model of the electromagnetic linear actuator was built up, and the simulation calculation was carried out based on Ansoft Maxwell and ANSYS Workbench. In order to verify the accuracy of the theoretical analysis and simulation model, the temperature rise was tested. Comparing the data of test and simulation, results show that the error is controlled well within 6.54%. Finally, laws of the electromagnetic linear actuator’s temperature rise and distribution were analyzed, which would lay a solid foundation for follow-up research on the cooling and heat dissipation of the electromagnetic linear actuator.