Abstract:

Research on the optimization of the switching speed of the electromagnetic actuator in automatic transfer switching devices is focused on.By analyzing the working principle and structural characteristics of the electromagnetic actuator,a method is proposed to optimize the electromagnetic attraction by adding non-magnetic shims (such as phosphor bronze or brass sheets) to adjust the air gap at the closing position.Simulation and experimental results show that when the gap is adjusted to an appropriate position,the electromagnetic attraction exceeds the force of the return spring,significantly reducing the contact switching time and meeting the requirements of high-standard applications.The results indicate that by reasonably controlling the air gap,the electromagnetic actuator can achieve fast and reliable release,providing a theoretical basis and practical method for its design in high-speed switching scenarios.

Key words: automatic transfer switching equipment, electromagnetic actuator, coercivity, hysteresis, reaction force