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Improvement of concentrated winding layouts for six-phase squirrel cage induction motors

Rezazadeh, G ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1109/TEC.2020.2995433
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2020
  4. Abstract:
  5. The fault-tolerant capability is a prerequisite for electrical safety-critical applications. In this regard, multi-phase induction motors are well-known actuators used to provide this feature. Compared to conventional three-phase machines with distributed windings, induction machines having concentrated windings could be more fault-tolerant because of increasing the number of phases. In addition, concentrated windings have shorter end-winding and less required copper weight which makes it a lower cost solution compared to distributed windings. However, concentrated windings adversely increase the distortion of the air gap flux density which affects motor performances. In this paper, a pseudo-concentrated winding layout has been proposed for six-phase squirrel-cage induction motors to improve performances compared to conventional concentrated windings. Winding function and equivalent circuit methods are used to analytically calculate performances. Finally, time-stepping finite element method and experimental measurements have been presented to confirm obtained analytical results. © 1986-2012 IEEE
  6. Keywords:
  7. Analytical modeling ; Distributed winding ; Fault-tolerance ; Finite element analysis ; Performance calculation ; Pseudo-concentrated winding ; Squirrel-cage induction machine ; Symmetrical six-phase system ; Winding function analysis ; Concentration (process) ; Electric motors ; Equivalent circuits ; Fault tolerance ; Safety engineering ; Winding ; Air gap flux density ; Concentrated winding ; Distributed windings ; Equivalent circuit method ; Fault-tolerant capability ; Multi-phase induction motors ; Squirrel cage induction motor ; Time-stepping finite element method ; Squirrel cage motors
  8. Source: IEEE Transactions on Energy Conversion ; Volume 35, Issue 4 , 2020 , Pages 1727-1735
  9. URL: https://ieeexplore.ieee.org/abstract/document/9095371