Title:
PERMANENT MAGNET TYPE CONCENTRATED WINDING MOTOR
Document Type and Number:
WIPO Patent Application WO/2013/080374
Kind Code:
A1
Abstract:
A permanent magnet type concentrated winding motor having a configuration wherein the number of poles is M, teeth (T), around which coils are wound in a concentrated manner, are arranged on a stator (Sr) at regular intervals in the circumferential direction, with the number of said teeth being N, M = (18 ± 4)n and N = 18n are satisfied (where n is an integer, n ≥ 1), an armature winding (AW) has m parallel circuits (where m is an even number expressed by m ≥ 2 and is a divisor of 2n), and each 1-phase-equivalent circuit of the parallel circuits is configured by serially connecting 6n/m coils. Because this motor is compact and highly efficient with little torque ripples and a low second-order electromagnetic excitation force in terms of spatial order, the motor creates little vibrations/noises. Also, because the formation of the parallel circuits allows the windings to be made thinner, the winding fill factor is improved, and the workability is also improved.
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Inventors:
NAKANO MASATSUGU (JP)
AKUTSU SATORU (JP)
ASAO YOSHIHITO (JP)
TAKIZAWA YUJI (JP)
HIROTANI YU (JP)
TAKIGUCHI RYUICHI (JP)
AKUTSU SATORU (JP)
ASAO YOSHIHITO (JP)
TAKIZAWA YUJI (JP)
HIROTANI YU (JP)
TAKIGUCHI RYUICHI (JP)
Application Number:
PCT/JP2011/077945
Publication Date:
June 06, 2013
Filing Date:
December 02, 2011
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
NAKANO MASATSUGU (JP)
AKUTSU SATORU (JP)
ASAO YOSHIHITO (JP)
TAKIZAWA YUJI (JP)
HIROTANI YU (JP)
TAKIGUCHI RYUICHI (JP)
NAKANO MASATSUGU (JP)
AKUTSU SATORU (JP)
ASAO YOSHIHITO (JP)
TAKIZAWA YUJI (JP)
HIROTANI YU (JP)
TAKIGUCHI RYUICHI (JP)
International Classes:
H02K21/14; H02K3/18
Domestic Patent References:
WO2011093202A1 | 2011-08-04 |
Foreign References:
JP2002272074A | 2002-09-20 | |||
JP2006050709A | 2006-02-16 | |||
JP2010531130A | 2010-09-16 | |||
JPH05344668A | 1993-12-24 | |||
JP2009201300A | 2009-09-03 | |||
JP2010124527A | 2010-06-03 | |||
JP2001054271A | 2001-02-23 | |||
JPH09172762A | 1997-06-30 |
Other References:
See also references of EP 2787611A4
Attorney, Agent or Firm:
OIWA Masuo et al. (JP)
Masuo Oiwa (JP)
Masuo Oiwa (JP)
Download PDF:
Claims: