The objective of PEIC, Power Electronics Innovation Center integrated into Turin Polytechnics, is to provide power conversion solutions for electric vehicles powertrains and chargers, more electric aircrafts, energy production and harvesting from renewables, smart transformers for electrical grids, more efficient variable speed drives, just to name some strategic applications.
Among the latest contents published on PEIC social channels, there is the fact that the multiphase solutions, multi-three-phase drives are becoming more and more widespread in practice as they can be modularly supplied by conventional three-phase inverters. Let us go into detail: most torque control solutions for multi-three-phase motors currently use vector space decomposition (VSD). In this way, the conventional control schemes for three-phase drives can be implemented, reducing the complexity of the control algorithm. However, this advantage is practically lost in the case of open-three-phase faults since additional post-fault control modules need to be implemented. Much attention is focused on Fault-Tolerant Torque Controller Based on Adaptive Decoupled Multi-Stator Modeling for Multi-Three-Phase Induction Motor Drives. It is a novel control approach that allows using any control scheme developed for three-phase motors to perform the torque regulation of a multi-three-phase machine both in healthy and faulty operation.