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Integrated design of high‐speed permanent‐magnet machines considering sensorless operation
Author(s) -
Wang Kai,
Zhang Lufeng
Publication year - 2018
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.22682
Subject(s) - stator , rotor (electric) , magnet , reliability (semiconductor) , control theory (sociology) , harmonic , point (geometry) , integrally closed , engineering , finite element method , control engineering , computer science , control (management) , mechanical engineering , power (physics) , physics , structural engineering , mathematics , geometry , quantum mechanics , artificial intelligence
Sensorless operation can significantly improve the reliability of the high‐speed permanent‐magnet (HSPM) machines. Thus, from the point of view of the whole system, it is necessary to consider sensorless control at the design stage for the HSPM brushless DC machines. In this paper, an integrated design is presented for sensorless control using the third‐harmonic back‐Electromagnetive force (EMF). Finite element (FE) method is used to integrally design the machine considering electromagnetism, temperature, and rotor structure strength, and the optimum rotor and stator structures are determined to obtain sufficient third‐harmonic back‐EMF for sensorless control. Simultaneously, the temperature distribution and rotor structure strength are predicted by the FE method. Finally, a prototype is fabricated and the experimental system is built to verify the machine structure, design method, and sensorless control strategy. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.