High-Power-Density and High-Reliability Permanent Magnet Synchronous Machine Systems: Design, Control, Applications, and Sustainability

Dear Colleagues,

With the growing demand for energy-efficient and robust electromechanical solutions in electric vehicles, renewable energy, aerospace, and industrial automation, PMSM systems are critical enablers of next-generation sustainable technologies. However, achieving both ultra-high-power-density and long-term reliability under extreme operating conditions (e.g., high temperatures, dynamic loads, and harsh environments) remains a significant challenge. This Special Issue seeks to consolidate breakthroughs in materials, design methodologies, control strategies, and system integration that address these challenges while aligning with global sustainability goals.

We welcome the submission of original research articles, review articles, and case studies focusing on the following topics (though this list is not exhaustive):

• Design Innovations:
  • Compact PMSM topologies for extreme power density (e.g., axial flux, fractional slot concentrated windings);
  • Advanced materials: High-performance rare-earth/rare-earth-free magnets, high-strength soft magnetic composites, and lightweight thermal management materials;
  •  Multi-physics co-design: Electromagnetic–thermal–mechanical coupling analysis and optimization.
• Reliability Enhancement:
  • Fault-tolerant control strategies for critical applications (e.g., sensorless operation, short-circuit mitigation);
  • Degradation modelling and lifetime prediction under thermal/mechanical stress;
  • Real-time condition monitoring and AI-driven predictive maintenance.
• High-Performance Control:
  • High-frequency drive systems for ultra-fast dynamic response;
  • Robust control under parameter uncertainties (e.g., magnet demagnetization, load variations);
  • Integration with wide-bandgap semiconductor devices (SiC/GaN) for efficiency improvement.
• Applications and Sustainability:
  • PMSM systems in electric aviation, deep-sea robotics, and high-speed rail;
  • Recycling and eco-design of PMSM components (magnets, windings);
  • Lifecycle assessment and circular economy strategies for PMSM production.

Dr. Jing Zhao
Dr. Xiaoyong Sun
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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.

• electrical machines
• motor control
• electric drive
• high power density
• high reliability