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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)
Application Number:
PCT/JP2011/077945
Publication Date:
June 06, 2013
Filing Date:
December 02, 2011
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (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:
WO2011093202A12011-08-04
Foreign References:
JP2002272074A2002-09-20
JP2006050709A2006-02-16
JP2010531130A2010-09-16
JPH05344668A1993-12-24
JP2009201300A2009-09-03
JP2010124527A2010-06-03
JP2001054271A2001-02-23
JPH09172762A1997-06-30
Other References:
See also references of EP 2787611A4
Attorney, Agent or Firm:
OIWA Masuo et al. (JP)
Masuo Oiwa (JP)
Download PDF:
Claims: