Abstract
Unlike the conventional railway traction motor, the concept of the dual-rotor in a dual-rotor permanent magnet synchronous motor (DR-PMSM) is that two rotors are mounted on the same rotation axis, and the outer rotor and the inner rotor rotate at different speeds. The DR-PMSM can transmit the power to the wheels in a structure that can cope with various problems of the reducer systems using mechanical gear mechanisms. In this research, the design study of the inner rotor including the permanent magnet is carried out in the application of the DR-PMSM. In designing the DR-PMSM models, surface permanent magnet (SPM) type and interior permanent magnet (IPM) type are considered according to the permanent magnet type of rotor, and IPM type is designed by dividing into bar type and V type. A comparative analysis of the three 1kW-class DR-PMSM models, in terms of electromagnetic properties, is performed to assess their general performance. The overall electromagnetic properties of the three designed models are similarly derived. But, the cogging torque and the rated torque characteristics of the IPM (V) type model are the best in comparison with the other models. In addition, the 1kW-class DR-PMSM prototype with V type magnet is fabricated to verify the validity of the analytical model and performance verification is performed.
Highlights
In recent, as research on the weight reduction and low-floor of railway vehicles has been actively conducted, designs for the miniaturization of the driving devices for railway vehicle are required
Unlike the conventional railway traction motor (PMSM), the concept of the dual-rotor in a Dual-rotor permanent magnet synchronous motor (DR-PMSM) is that two rotors are mounted on the same rotation axis, and the outer rotor and the inner rotor rotate at different speeds
The DR-PMSM can transmit the power to the wheels in a structure that can cope with various problems of the reducer systems using mechanical gear mechanisms
Summary
As research on the weight reduction and low-floor of railway vehicles has been actively conducted, designs for the miniaturization of the driving devices for railway vehicle are required. The conventional driving devices have large maintenance cost problem due to transmission oil leakage and tooth wear of the mechanical reduction gears. Dual-rotor permanent magnet synchronous motor (DR-PMSM) can be a good alternative to the conventional driving devices. DR-PMSM is structurally integrated with magnetic gear and PMSM, and it has high efficiency characteristics similar to PMSM. A comparative analysis of the three 1kW-class DR-PMSM models, in terms of electromagnetic properties, is performed to assess their general performance. The 1kWclass DR-PMSM prototype with V type magnet is fabricated to verify the validity of the analytical model and performance verification is performed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
