Three-phase electromagnetic motor with 8*n permanent magnet rotor and 6*n magnetic pole stator with 3*n windings around every other magnetic pole

Patent metadata

Field	Value
Publication number	US-10069365-B2
Application number	US-201414466381-A
Country	US
Kind code	B2
Filing date	Aug 22, 2014
Priority date	Sep 4, 2013
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A three-phase electromagnetic motor includes: a stator that is formed by winding a winding around a magnetic pole formed between slots of a stator core; and a rotor that is disposed inside the stator and has a permanent magnet. The three-phase electromagnetic motor is formed of 8n poles and 6n slots (n is a natural number). 3n windings are wound around every other magnetic pole among a plurality of magnetic poles of the stator core.

First claim

What is claimed is:

1. A three-phase electromagnetic motor comprising:
a stator that is formed by winding a winding around a
magnetic pole formed between slots of a stator core; and a rotor that is disposed inside the stator and has permanent magnet poles,
wherein 3*n windings are configured using 8*n permanent magnet poles and 6*n slots (n is a nonzero_natural number), and wound around every other magnetic pole among a plurality of magnetic poles of the stator core;
wherein the electromagnetic motor comprise more permanent magnet poles than slots; and
wherein the electromagnetic motor has a ratio of permanent magnet poles to slots of 8:6;
wherein each of the plurality of magnetic poles has a magnetic pole main part protruding from the stator core and a magnetic pole front end part whose width is made larger in a circumferential direction which is formed at a front end of the magnetic pole main part;
wherein the plurality of magnetic poles comprises a first magnetic pole in which a width of the magnetic pole main part is continuously made larger from a base of the magnetic pole main part to the magnetic pole front end part such that the first magnetic pole has a substantially trapezoidal shape; and a second magnetic pole in which a width of the magnetic pole main part is continuously made smaller from a base of the magnetic pole main part to the magnetic pole front end part such that the second magnetic pole has a substantially reverse trapezoidal shape; and
wherein the first magnetic pole and the second magnetic pole are alternately disposed, and the winding is wound around the magnetic pole main part of the first magnetic pole.

2. The three-phase electromagnetic motor according to claim 1 ,
wherein three windings are wound around every other magnetic pole of the stator core in the motor including the eight permanent magnet poles and six slots (n=1).

3. The three-phase electromagnetic motor according to claim 1 , wherein, in case of n=2 or more, the windings of each of u-phase group, v-phase group and w-phase group are continuously wound through a crossover wire.

Assignees

• Miyashita Toshihito
• Horiuchi Manabu
• Sanyo Electric Co

Inventors

• Miyashita Toshihito
• Horiuchi Manabu

Classifications

• H02K21/16 Primary

  having annular armature cores with salient poles (with homopolar co-operation H02K21/20) · CPC title

• H02K3/18

  Windings for salient poles · CPC title

• H02K1/2753

  the rotor consisting of magnets or groups of magnets arranged with alternating polarity · CPC title

• H02K1/14

  Stator cores with salient poles · CPC title

• H02K1/146

  consisting of a generally annular yoke with salient poles · CPC title