Research on Analytical Modeling of Dynamic Inductance of Electromagnetic Thermal Energy Storage System

The heating tube (HT) is the core component of the energy storage system, and its inductance affects the power and efficiency of the system. In this paper, taking the HT in the 50kW electromagnetic thermal energy storage system as the research object, using the equivalent magnetic network (EMN) analysis method, Considering the nonlinearity and skin effect of ferromagnetic materials, the magnetic field distribution in the solution domain is calculated, and then the dynamic inductance function of the HT is obtained. Finally, the effectiveness of the EMN method is verified by comparing the results between experimental and the EMN method.