The new approach to optimization of synchronous superconducting electric machines with outer inductor

Abstract

When designing electrical machines, questions often arise regarding the choice of optimal parameters and dimensions. This need is especially acute in the development of electrical machines based on new materials, such as high-temperature superconductors (HTS). In addition, the design process is complicated by the need to take into account the unique properties of new materials. In particular, such unique properties of superconductors include the dependence of the critical current on temperature, magnetic field, and mechanical stress. Naturally, when developing electric machines, it is necessary to take into account these dependencies and accordingly, adjust and supplement the existing traditional calculation methods. In some cases, the limitations imposed by the new materials properties allow us to offer new approaches to calculating the optimal parameters and dimensions of electric machines. The paper presents a new optimization approach to calculating the active zone of a synchronous electric machine with an outer inductor and HTS-based windings. The proposed idea underlying the approach and algorithm for solving the optimization problem are described. The results of calculating a 2.5 MW superconducting electric machine (SC EM) with a rotational speed of 2500 rpm are shown.