Title:
Rotation electrical machinery
Document Type and Number:
Japanese Patent JP6019875
Kind Code:
B2
Abstract:
An electric motor (1) has a supplementary field magnet (SF) including a magnetization coil (51), a yoke (52) serving as a magnetic path for magnetic flux produced by the magnetization coil (51), and a variable magnet (53). The supplementary field magnet (SF) is arranged on one axial end side of the rotor (4) with a gap. A rotor core (22) is provided with first projections (37) projecting toward one axial end side of the electric motor (1) from first magnetic pole portions (35), and second projections (38) projecting toward the one axial end side from second magnetic pole portions (36) and arranged radially inward of the first projections (37). The yoke (52) includes an outer magnetic pole portion (54) axially opposed to the first projections (37), and an inner magnetic pole portion (55) axially opposed to the second projections (38) such that an annular gap (G) is formed between the inner magnetic pole portion (55) and the outer magnetic pole portion (54).
Inventors:
Yoshiyuki Shibata
Application Number:
JP2012162935A
Publication Date:
November 02, 2016
Filing Date:
July 23, 2012
Export Citation:
Assignee:
JTEKT Corporation
International Classes:
H02K21/16; H02K1/27
Domestic Patent References:
| JP2009296691A | ||||
| JP2011182622A | ||||
| JP2008043099A | ||||
| JP2011067048A |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda