Conceptual design of sleeve rotor synchronous reluctance motor for traction applications

Reddy, Patel Bhageerath; Grace, Kevin; El‐Refaie, Ayman

doi:10.1049/iet-epa.2015.0266

Conceptual design of sleeve rotor synchronous reluctance motor for traction applications

Journal Article · Sun May 01 00:00:00 EDT 2016 · IET Electric Power Applications

DOI:https://doi.org/10.1049/iet-epa.2015.0266· OSTI ID:1786507

Reddy, Patel Bhageerath ^[1]; Grace, Kevin ^[1]; El‐Refaie, Ayman ^[1]

Electric Machines Laboratory General Electric Global Research Niskayuna USA

Synchronous reluctance machines are very appealing for high speed traction motor design due to their robustness, simple structure, absence of magnets, and simple control. The absence of magnets means that synchronous reluctance (SynRel) machines are not susceptible to price variability and sustainability of rare‐earth materials. Moreover, there are no concerns about demagnetisation or uncontrolled generation mode. However, the challenge of achieving a good constant power to speed ratio is dependent on the mechanical aspects of the design. Conventional SynRel designs perform poorly compared with the permanent magnet machines due to the presence of bridges and/or centre posts in absence of the magnets to help saturate these regions. In this case, the challenge of rotor mechanical retention is addressed with the help of a sleeve on the rotor to reduce the need for bridges and/or centre posts. Design optimisation including the mechanical aspects of the sleeve is presented in this study. The final design with a sleeve will be shown to be superior to a conventional design in terms of power density, rotor losses, saliency and torque ripple.

View Accepted Manuscript (Publisher)

Sponsoring Organization:: USDOE

OSTI ID:: 1786507

Journal Information:: IET Electric Power Applications, Journal Name: IET Electric Power Applications Journal Issue: 5 Vol. 10; ISSN 1751-8660

Publisher:: Institution of Engineering and Technology (IET)Copyright Statement

Country of Publication:: United Kingdom

Language:: English

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