| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor structure of a permanent magnet type rotary machine that prevents leakage magnetic flux and increase magnetic flux density in a gap even when a rotor core is structured in one body and when a permanent magnet having low remanent flux density is used as a permanent magnet generating main magnetic flux.SOLUTION: A rotor 1 comprises a rotor core 11 in which a shaft 2 is fitted, a plurality of ferrite magnets 12 embedded radially at positions part from the shaft 2 of the rotor core 11, and a plurality of neodymium magnets 13 embedded between the shaft 2 of the rotor core 11 and the ferrite magnets 12. The rotor core 11 is provided with a connection portion 115 connecting rotor core pieces 114, and the neodymium magnets 13 are arranged having the same magnetization direction with the ferrite magnets 12 arranged opposite in radial directions, and also preventing magnetic flux of the ferrite magnets 12 from short-circuiting between the rotor core pieces 114 adjacent in a peripheral direction. |
