Design and Simulation of Electromagnetic Metamaterial Unit for High-frequency Transformer

As the operating frequency of the switching power supply continues to increase to the MHz level, the power loss of various magnetic materials increases rapidly with the increase of frequency and magnetic flux density. The magnetization performance and the power loss of magnetic materials limit the increase in power density. In order to reduce power loss, a metamaterial structure with a higher equivalent permeability is designed. The relevant structural parameters and optimization methods are analyzed using the experimental comparison method, and the electromagnetic simulation software is used for simulation analysis. It is found that the transmission efficiency of the transformer based on the metamaterial structure is 78.44% higher than that of the traditional transformer. The correctness of the designed electromagnetic metamaterial is verified.