Title:
VEHICULAR AC GENERATOR
Document Type and Number:
WIPO Patent Application WO/2008/029623
Kind Code:
A1
Abstract:
Provided is a vehicular generator comprising a Lundell rotor, which can increase
the sectional areas of the yokes of the roots of pawl-shaped magnetic poles but
can decrease the sectional areas of the portions of the confronting yokes, to
relieve the magnetic saturations at the roots of the pawl-shaped magnetic poles,
while retaining the winding spaces for field coils, thereby to retain sufficient
magnetic fluxes to the pawl tip portions. First and second protrusions (25 and
26) are protruded from the inner wall faces of the portions of the first and second
yokes (19 and 23) at the roots of the first and second pawl-shaped magnetic poles
(20 and 24), and first and second recesses (27 and 28) are recessed from the inner
wall faces of the first and second yokes (19 and 23) confronting the second and
first protrusions (26 and 25). Moreover, the regions, in which the field coils
are arranged, are shaped to fix the sectional shape of the plane containing the
axis of a pole core, substantially in the circumferential direction, and are
constituted in such a wave shape that they alternately meander in the axial direction
at the individual positions of the first and second pawl-shaped magnetic poles
(20 and 24).
Inventors:
INOUE MASAYA (JP)
NAKA KOUKI (JP)
AKITA HIROYUKI (JP)
SHINKAWA KANJI (JP)
MIYAMOTO YOSHINORI (JP)
YOSHIZAWA TOSHIYUKI (JP)
KOMETANI HARUYUKI (JP)
NAKA KOUKI (JP)
AKITA HIROYUKI (JP)
SHINKAWA KANJI (JP)
MIYAMOTO YOSHINORI (JP)
YOSHIZAWA TOSHIYUKI (JP)
KOMETANI HARUYUKI (JP)
Application Number:
PCT/JP2007/066264
Publication Date:
March 13, 2008
Filing Date:
August 22, 2007
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
INOUE MASAYA (JP)
NAKA KOUKI (JP)
AKITA HIROYUKI (JP)
SHINKAWA KANJI (JP)
MIYAMOTO YOSHINORI (JP)
YOSHIZAWA TOSHIYUKI (JP)
KOMETANI HARUYUKI (JP)
INOUE MASAYA (JP)
NAKA KOUKI (JP)
AKITA HIROYUKI (JP)
SHINKAWA KANJI (JP)
MIYAMOTO YOSHINORI (JP)
YOSHIZAWA TOSHIYUKI (JP)
KOMETANI HARUYUKI (JP)
International Classes:
H02K1/24; H02K19/22
Foreign References:
| JPH0412652A | 1992-01-17 | |||
| JPS5849579U | 1983-04-04 |
Attorney, Agent or Firm:
SOGA, Michiharu et al. (8th Floor Kokusai Building, 1-1, Marunouchi 3-chome, Chiyoda-k, Tokyo 05, JP)
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