Dear Colleagues,

We kindly invite you to contribute an article to the Special Issue of the MDPI journal Machines on the topic “Multiphase Machines: Converter Control and Innovative Exploitation”.

At present, the application of power electronics and new topologies of converter systems in electrical drive systems enables the utilization of AC machines with a stator phase number higher than three. These machines are called multiphase machines. Some of the advantages of multiphase drives, when compared to standard three-phase drives, include:

• The possibility of sharing the delivered power among more inverter legs, which reduces the current stress of each power device;
• Higher reliability, since a multiphase machine can operate with an asymmetrical winding structure in case of the loss of one or more inverter legs or machine phases;
• Reduced current harmonic content in the direct current (DC) link in case of voltage-source-inverter-fed drives.

Multiphase electrical motors are increasingly applied in industry as high-power drives; in transportation as the drives of electric vehicles, elevators, and ship propulsion motor drives; and other applications. Another important area is represented by wind energy conversion systems with new types of multiphase electrical generators.

However, the design of effective motors and drives requires flexibility in the control of power, torque, flux, current, acceleration, position, and speed. Without proper modeling, drive, and control, these multiphase drive systems cannot function effectively. To address these issues, we need to focus on the design and modeling of different novel types of multiphase machines and the control of these machines.

The central theme of this Special Issue focuses on novel types and constructions of multiphase electrical machines; novel topologies and structures of multiphase converters; advanced control methods of multiphase machines; and modern applications of multiphase machines in electrical vehicles, industrial drives and renewably energy systems.

This Special Issue encourages and invites original contributions regarding recent developments and ideas in the design of multiphase machines, multiphase motor drives and multiphase motor control. Potential topics include all issues connected with multiphase electrical machines: machine design, advanced methods of control, torque and speed control, reliability improvement, sensorless drive systems, high-performance drive systems, high-efficiency motor drive systems, and practical applications of motor drive systems.

Topics of interest may include but are not limited to:

• Novel constructions of multiphase induction machines;
• Novel constructions of multiphase permanent magnet (PM) machines;
• Modelling and design of multiphase machines;
• Novel topologies and structures of multiphase converters;
• Vector control, sliding mode control, fuzzy and neural control and other advanced control methods of multiphase machines;
• Fault diagnosis and fault-tolerant control of multiphase drive systems;
• Artificial intelligence applications in multiphase machine systems;
• Parameter estimation of multiphase machines;
• Efficiency optimization of multiphase machines;
• Applications of multiphase machines in electrical vehicle drives;
• Wind energy conversion systems with multiphase machines and multiphase converters;
• Ship propulsion motor drives with multiphase machines and multiphase converters;
• Other related topics.

We look forward to your submissions.

Dr. Krzysztof Pienkowski
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Machines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• multiphase induction machines
• multiphase PM machines
• multiphase converter topology
• mathematical modeling and analysis
• advanced control
• fault diagnosis
• artificial intelligence
• electric vehicles
• multiphase industrial drives
• renewable energy conversion