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Slotless disk type resolver: a solution to improve the accuracy of multi-speed wound rotor resolvers

Moheyseni, A ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1109/TTE.2021.3111702
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2021
  4. Abstract:
  5. A common solution for increasing the accuracy of wound-rotor (WR) resolvers is to increase the number of poles. To achieve a compact design, fractional slot concentrated winding is used for multi-pole WR resolvers. However, employing such windings leads to rich sub-harmonics in the induced voltages. To suppress these undesirable sub-harmonics, multi-layer windings with appropriate shifting angle between the layers is suggested. However, the said shifting angle is limited by the slot pitch so that the capability of the multi-layer winding is not utilized fully. To overcome the mentioned deficiency a slotless disk type configuration is proposed in this paper. Then, an optimization based on the winding function model of the sensor is carried out to achieve an optimal winding configuration. 3-D time-stepping finite element method (FEM) is used to verify the success of the proposed analytical model and the performed optimization. Finally, a prototype of the optimal configuration is built for experimental measurements. IEEE
  6. Keywords:
  7. Poles ; Compact designs ; Fractional slot concentrated windings ; Induced voltages ; Number of poles ; Subharmonics ; Time-stepping finite element method ; Winding configuration ; Winding function ; Winding
  8. Source: IEEE Transactions on Transportation Electrification ; 2021 ; 23327782 (ISSN)
  9. URL: https://ieeexplore.ieee.org/document/9535113