Numerical modelling of an electromagnetic actuator for vacuum contactors

In this paper, the authors aim to present the modelling, simulation and experimentation of an electromagnetic actuator used in the construction of vacuum contactors. In order to validate the numerical results obtained by computer simulation was performed and an experimental model. The role of the electromagnetic actuator is to achieve movement of the movable electrical contacts of the contactor with certain speeds and precise trajectories. The advantages of the electromagnetic actuator presented in this paper are the following: it is able to perform a large number of mechanical cycles (at least than one million), with high frequency, with high holding force in the closed position, through reducing air gaps and technology leakage flux, low power consumption, enrolling in a compact volume, reliable and low cost manufacturing. Using finite element simulation software, it was modelated and optimized an electromagnetic actuator with high performance, reliable, inexpensive that can be easily used in the construction of the Vacuum Contactors.