Digital Twin Models of Multi-Three-Phase Permanent Magnet Synchronous Motors

Multiphase motor drives have undergone significant advancements in recent years, particularly in safety-critical applications like wind energy conversion systems, more electric aircraft, or ship propulsion. Compared to their three-phase counterparts, multiphase machines offer several advantages, including reduced per-phase current, lower torque ripple, and inherent fault tolerance. Attractive topology solutions are multi- three-phase (M3PH) machines since they can exploit standard three-phase power electronics technologies, and the know-how related to the three phase drive solutions. The literature proposes several control approaches to deal with M3PH machines, such as vector space decomposition (VSD), multi-stator (MS), and decoupled multi stator (DMS) with its adaptive variant (A-DMS). However, applying these approaches for accurate machine modeling is still challenging, particularly in faulty conditions, and very few articles investigated their systematic implementation in simulation frameworks. Therefore, this paper presents comprehensive and accurate digital twin (DT) models for M3PH machines, ensuring accurate flux and torque production modelling under all potential operating conditions, including open-three phase fault scenarios. The proposed DT models have been developed and validated through simulations on a quadruple three-phase permanent magnet synchronous motor (PMSM).