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Optimization of magnet arrangement in double‐layer interior permanent‐magnet motors
Author(s) -
Yamazaki Katsumi,
Kitayuguchi Kazuya
Publication year - 2013
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.22348
Subject(s) - magnet , inductance , rotor (electric) , torque , electrical engineering , saturation (graph theory) , magnetic circuit , control theory (sociology) , materials science , mechanical engineering , physics , computer science , engineering , voltage , mathematics , thermodynamics , control (management) , combinatorics , artificial intelligence
The arrangement of permanent magnets in double‐layer interior permanent‐magnet motors is optimized for variable‐speed applications. First, the arrangement of magnets is decided by automatic optimization. Next, the superiority of the optimized motor is discussed by considering d ‐ and q ‐axis equivalent circuits that take into account the magnetic saturation of the rotor core. Finally, experimental verication is carried out with a prototype motor. It is conrmed that the maximum torque of the optimized motor under both low‐speed and high‐speed conditions is higher than that of conventional motors because of the relatively large q‐axis inductance and small d‐axis inductance. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 183(4): 54–63, 2013; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22348