Method for manufacturing permanent magnet type rotating electric machine and method for manufacturing permanent magnet type synchronous generator for wind power generation

摘要

The present invention has been made for the purpose of obtaining a permanent magnet type dynamo electric machine, and a permanent magnet type synchronous generator for wind power generation, each of which is capable of reducing an eddy current loss of a rotor while having a construction of an integral one-piece rotor yoke. ??Each of the generators is constructed in such a way that it includes a rotor 100 having a plurality of magnetic poles composed of permanent magnets 4, and a stator 101 having armature windings concentratedly wound around teeth, and when the number of pole pairs of the magnetic poles of the rotor 100 is P, a diameter of the rotor 100 is DÄmÜ, and a spatial harmonic order of a predetermined harmonic component of an armature magnetomotive force of the rotor 100 is N (a mechanical angle 360 degrees is decided as 1-st order), the P, D and N meet a relationship of ((N + P) to the 1.5-th power) x (N to the minus 4-th power) x (the square of P) x D 0.6 (its unit is m). IMAGE