Title:
PERMANENT MAGNET TYPE ROTATING ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2010/058576
Kind Code:
A1
Abstract:
This permanent magnet type rotating electric machine suppresses an increase in the magnetizing current during demagnetization and during magnetization, and enables variable speed operation over a wide range from low speed to high speed with high output. A rotor (1) is comprised of a rotor core (2), a variable magnetic force magnet (3), and a fixed magnetic force magnet (4). The variable magnetic force magnet (3) and a fixed magnetic force magnet (4a) overlap in the magnetization direction thereof to form a magnet series. This magnet series is disposed within the rotor core (2) at a position whereby the direction of magnetization is in the direction of axis d. On either side of the magnetic series of the variable magnetic force magnet (3) and the fixed magnetic force magnet (4a), fixed magnetic force magnets (4b, 4b) are disposed at a position whereby the direction of magnetization is in the direction of axis d. When the interlinkage magnetic flux of the variable magnetic force magnet (3) is reduced, a magnetic field is activated in the reverse direction of the magnetization direction of the variable magnetic force magnet (3) by means of the armature winding current. When the interlinkage magnetic flux of the variable magnetic force magnet (3) is increased, a magnetic field is activated in the same direction as the magnetization direction of the magnet by means of the armature winding current.
Inventors:
SAKAI KAZUTO (JP)
HASHIBA YUTAKA (JP)
TAKAHASHI NORIO (JP)
YUUKI KAZUAKI (JP)
HASHIBA YUTAKA (JP)
TAKAHASHI NORIO (JP)
YUUKI KAZUAKI (JP)
Application Number:
PCT/JP2009/006216
Publication Date:
May 27, 2010
Filing Date:
November 19, 2009
Export Citation:
Assignee:
TOSHIBA KK (JP)
SAKAI KAZUTO (JP)
HASHIBA YUTAKA (JP)
TAKAHASHI NORIO (JP)
YUUKI KAZUAKI (JP)
SAKAI KAZUTO (JP)
HASHIBA YUTAKA (JP)
TAKAHASHI NORIO (JP)
YUUKI KAZUAKI (JP)
International Classes:
H02K1/27
Domestic Patent References:
| WO2008013167A1 | 2008-01-31 |
Foreign References:
| JP2002252939A | 2002-09-06 | |||
| JP2008245368A | 2008-10-09 | |||
| JP2006280195A | 2006-10-12 | |||
| JP2008048514A | 2008-02-28 |
Other References:
YOJI TAKEDA ET AL.: "Design and control of embedded magnet synchronous motor", October 2001, OHMSHA, LTD.
See also references of EP 2360814A4
See also references of EP 2360814A4
Attorney, Agent or Firm:
KIUCHI, MITSUHARU (JP)
Mitsuharu Kiuchi (JP)
Mitsuharu Kiuchi (JP)
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