Parameter Estimation Method for Dual-Stator Permanent Magnet Synchronous Motor based on Incremental Inductance

Abstract

The dual inverter and dual stator system is suitable for air mobility due to its redundant system. Motor analysis for transportation should encompass not only electromagnetic characteristics but also drive and multiphysics systems to account for real operating conditions. To reduce the considerable time of system integrated analysis, especially those involving drive and multiphysics systems, a parameter-based model can be employed as a substitute for the finite element analysis (FEA) co-simulation. Therefore, an accurate and fast parameter-deriving method is required. The conventional method, the frozen-permeability method, is accurate but time-consuming because the dual stator system has doubled inputs. In this article, a parameter estimation method based on the incremental method is proposed to consider a dual stator motor. Subsequently, the frozen-permeability method and the proposed method are compared to assess their accuracy. The results show that the proposed method can acquire accurate data faster than the frozen-permeability method. In addition, experiments are conducted to validate the parameter-deriving methods.