PERMANENT MAGNET TYPE DYNAMO-ELECTRIC MACHINE AND WIND POWER GENERATION-USE PERMANENT MAGNET TYPE SYNCHRONOUS GENERATOR

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