Abstract
AbstractThis paper presents a simple nonlinear magnetic analysis‐based optimum design of a multipole permanent magnet machine as an assistant design tool of 3D‐FEM. The proposed analysis is based on the equivalent magnetic circuit and the air gap permeance model between the stator and rotor teeth of the motor, taking into account the local magnetic saturation in the pointed end of teeth. The applicability of the proposed analysis is verified by comparison with 3D‐FEM analysis from the standpoints of torque calculation accuracy for the variations of design free parameter and the computation time. After verification, the proposed analysis‐based optimum design of the permanent magnet dimensions is examined, by which the minimization of the magnet volume is realized while keeping the torque/current ratio at the specified value. © 2004 Wiley Periodicals, Inc. Electr Eng Jpn, 149(3): 65–74, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.10288
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