<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Line-start synchronous permanent magnet motor (LSSPMM) is being considered as a replacement or alternative to asynchronous squirrel-cage motor (AM) in constant speed applications. This is due to the better efficiency and power factor than the asynchronous motor. There are various rotor topologies of LSSPMM concerning the magnets placement and their dimensions. The paper analyses six different rotor topologies in terms of achieving the best efficiency and power factor for the same output power of the motor with minimal consumption of permanent magnet material. All other motor design parameters remain unchanged, i.e. all motor topologies are analysed for the same stator laminations and the same motor windings. The numerical finite element method (FEM) models and dynamic models for obtaining transient characteristics of speed, torque and current verify the proposed design of various motor models. The results from all motor models are compared and adequate conclusions are derived regarding the optimal rotor topology in terms of obtaining the best efficiency and power factor with minimal consumption of permanent magnet material, for the same output power of the motor.</p>
</abstract>

Line-start synchronous permanent magnet motor (LSSPMM) is being considered as a replacement or alternative to asynchronous squirrel-cage motor (AM) in constant speed applications. This is due to the better efficiency and power factor than the asynchronous motor. There are various rotor topologies of LSSPMM concerning the magnets placement and their dimensions. The paper analyses six different rotor topologies in terms of achieving the best efficiency and power factor for the same output power of the motor with minimal consumption of permanent magnet material. All other motor design parameters remain unchanged, i.e. all motor topologies are analysed for the same stator laminations and the same motor windings. The numerical finite element method (FEM) models and dynamic models for obtaining transient characteristics of speed, torque and current verify the proposed design of various motor models. The results from all motor models are compared and adequate conclusions are derived regarding the optimal rotor topology in terms of obtaining the best efficiency and power factor with minimal consumption of permanent magnet material, for the same output power of the motor.

Various Rotor Topologies of Line-Start Synchronous Motor for Efficiency Improvement

Power Electronics and Drives

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Line-start synchronous permanent magnet motor (LSSPMM) is being considered as a replacement or alternative to asynchronous squirrel-cage motor (AM) in constant...

Various Rotor Topologies of Line-Start Synchronous Motor for Efficiency Improvement

Published Online: Oct 10, 2020

Page range: 83 - 95

Received: Apr 09, 2020

Accepted: Aug 25, 2020

DOI: https://doi.org/10.2478/pead-2020-0006

Keywords
line-start synchronous permanent magnet motor, rotor topologies, transient characteristics, FEM

© 2020 Vasilija Jovan Sarac et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Various Rotor Topologies of Line-Start Synchronous Motor for Efficiency Improvement

Published Online: Oct 10, 2020

Page range: 83 - 95

Received: Apr 09, 2020

Accepted: Aug 25, 2020

DOI: https://doi.org/10.2478/pead-2020-0006

Keywordsline-start synchronous permanent magnet motor, rotor topologies, transient characteristics, FEM

© 2020 Vasilija Jovan Sarac et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
line-start synchronous permanent magnet motor, rotor topologies, transient characteristics, FEM