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Development of interior permanent magnet motors reducing harmonic iron losses under field weakening control
Author(s) -
Yamazaki Katsumi,
Ohki Shunji,
Nezu Akira,
Ikemi Takeshi
Publication year - 2009
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.20827
Subject(s) - magnet , rotor (electric) , torque , finite element method , harmonic , control theory (sociology) , flux (metallurgy) , materials science , rotational speed , engineering , mechanical engineering , physics , computer science , control (management) , structural engineering , acoustics , metallurgy , thermodynamics , artificial intelligence
Abstract In this paper, we present the development of interior magnet motors reducing iron loss at high rotational speed under the flux weakening control. The rotor core and magnet shapes are determined by the automatic numerical calculation using combination of the optimization method and the adaptive finite element method. The optimized motor is manufactured to prove the effectiveness by the measurement of the iron loss. Both results of the calculation and the measurement indicate that the iron loss of the proposed motor at the high rotational speed under the flux weakening control is reduced by half compared with the initial rotor shape while the torque is nearly constant. © 2009 Wiley Periodicals, Inc. Electr Eng Jpn, 168(3): 59–66, 2009; Published online in Wiley InterScience ( www.interscience. wiley.com ). DOI 10.1002/eej.20827