New Insights into Permanent Magnet Motors
A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A: Sustainable Energy".
Deadline for manuscript submissions: closed (30 June 2021) | Viewed by 10068
Special Issue Editors
Interests: electric machine design and control, especially PMSM and SynRM; motor design for rail-road application and HEV/EV traction; optimal design and multi-physics analysis
Special Issue Information
Dear Colleagues,
Because electric motors use more than 50% of electrical energy, the high-efficiency operation of electric motors is a very important issue. High-efficiency operation can be achieved using a high-efficiency motor and adjustable speed control. The induction motor has technical limitations in high efficiency and miniaturization due to the squirrel-cage rotor structure. Permanent magnet motors enable high-efficiency driving and miniaturization compared to induction motors. In particular, traction motors used in HEV/EVs are applications where miniaturization and high efficiency are needed. Permanent magnet motors are widely used in this application due to their high output density and efficiency.
IPMSM is high output density and high efficiency because it uses reluctance torque and magnetic torque. IPMSM is used in many applications due to its high performance. However, IPMSM with magnetic barriers are mechanically weak and produce permanent demagnetization due to heat and inverse magnetic field. No matter how well-made permanent magnet motors are, they cannot perform their functions if they are poorly controlled. Therefore, the design of permanent magnet motors inevitably requires mechanical stiffness analysis, thermal analysis, and characteristic analysis considering proper control methods.
Applications that require high-performance position control such as robots and machine tools are expanding. Slotless permanent magnet electric motors are suitable for these applications. Because slotless motors can increase electrical loads and there is no cogging torque. The winding of slotless motors is very difficult but more likely to be developed.
The design and control of permanent magnet motors are likely to develop technologically and the applications continue to expand, so it is believed that more active research and information exchange is needed.
This Special Issue will serve as a venue for exchange between engineers and scholars who design and control permanent magnet electric motors.
Prof. Ju Lee
Prof. Dr. Changsung Jin
Guest Editors
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Keywords
- IPMSM, SPMSM, PMDC
- multiphysics analysis
- slotless PM motor
- characteristic analysis considering proper control method
- demagnetization
