Modeling and optimization of electro-mechanical converter for high-speed on/off valve based on Cauer circuits

In this paper, an equivalent circuit model of electro-mechanical converter (EMC) is developed using Cauer circuits, which can be used to improve the response speed of high-speed switching valves (HSVs), and this model can replace the transient analysis method of finite element model with high computational cost and the traditional magnetic circuit model that cannot accurately reflect the eddy current and skinning effect of coils. For EMC with high-frequency operation, the Cauer circuit can be used to describe the eddy currents on the physical layer and the skinning effect of the soft magnetic material. In this paper, a multi-field coupled EMC trapezoidal circuit simulation model is developed, and the reliability of the model is verified by experiments. The model can be used to analyze the energy consumption in order to identify the main optimized components of the EMC, and the genetic algorithm is selected as the optimization method to improve the structure, which leads to the reduction of eddy current losses and the improvement of the overall dynamic response of the EMC.