Three-phase permanent magnet type motor

摘要

A three-phase permanent magnet type motor has a stator in which a plurality of windings wound in a same direction are disposed, and the number of slots is 12n; a rotor in which the number of poles of the permanent magnet is 10n or 14n; and multilayer wiring boards for performing the connection so as to be 2m parallel. The three-phase permanent magnet type motor has a circuit configuration in which, among U-phase, V-phase, and W-phase, adjacent in-phase windings are connected in parallel and are connected in series with a like-pole winding of a symmetrical in-phase second winding group facing at 6-slot pitch angle, when a center of a first winding group of the adjacent in-phase windings is set as a reference axis, and in-phase transition wiring patterns are disposed on the same layer of the multilayer wiring boards in a line symmetrical manner.

主权项

1. A three-phase permanent magnet type motor having three phases comprising:
a stator in which a plurality of windings wound in a same direction are disposed, and the number of slots is 12n (n is arbitrary natural number); a rotor in which the number of poles of the permanent magnet is 10n or 14n; and a multilayer wiring board for providing a connection so as to be 2m parallel (m is divisor of n including 1), wherein the three-phase permanent magnet type motor has a circuit configuration in which, among U-phase, V-phase, and W-phase, adjacent in-phase windings are connected in parallel and are connected in series with a like-pole winding of a symmetrical in-phase second winding group facing at 6-slot pitch angle, when a center of a first winding group of the adjacent in-phase windings is set as a reference axis, and in-phase transition wiring patterns are disposed on the same layer of the multilayer wiring board in a line symmetrical manner; wherein the multilayer wiring board includes first, second and third separate boards each defining a series connection pathways for a corresponding particular motor phase of the three phases, and a fourth board that has (1) at least one parallel electric connection pathway of the motor phases and (2) parallel connection to the neutral point between all motor phases.