Innovative Applications of Multiphase Machines

Dear Colleagues,

Machines with more than three phases provide multiple advantages in comparison to conventional three-phase ones. The fact that the power is split among a higher number of phases makes it possible to decrease the rating of the power semiconductors. On the other hand, the greater number of degrees of freedom enables enhanced potential regarding applications such as fault-tolerant drives, integrated battery chargers, bearingless machines, multimotor drives, increased power density by harmonic injection, or parameter estimation. Accordingly, the attention devoted to multiphase drives has not ceased to increase in recent years in different contexts, including electric transportation and wind or marine generation.

Nevertheless, there are still many open challenges that require further research. Due to the increased system complexity, special control and pulsewidth-modulation techniques are necessary to exploit the greater possibilities offered by multiphase drives. The small relative impedance offered by these machines to certain voltage components requires special care to avoid overcurrent. Improved design and modeling of multiphase machines is desirable in order to attain higher performance and fault tolerance. Fault diagnosis algorithms taking into account the particularities and multiple degrees of freedom of these drives are of substantial interest as well.

This Special Issue calls for papers that explore innovative applications of multiphase drives, in terms of novel control and modulation techniques, design and modeling approaches, drive topologies, or fault diagnosis algorithms.

Dr. Alejandro Gómez Yepes
Dr. Ignacio Gonzalez Prieto
Prof. Dr. Ayman Abdel-Khalik
Guest Editors

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