Title:
PERMANENT MAGNET TYPE MOTOR
Document Type and Number:
WIPO Patent Application WO/2014/174572
Kind Code:
A1
Abstract:
A permanent magnet type motor with reduced torque ripple, wherein torque ripples due to the sixth-order and twelfth-order electrical angle components are both reduced with a small skew angle, is provided. This permanent magnet type motor is configured so as to be driven with the phases of currents that flow in two sets of three-phase armature windings (26-1, 2) being offset from each other by an electrical angle of 20° to 40°, a rotor (11) is composed of m-stages of rotor components that are arranged in an axial direction, the m-stages of rotor components are respectively constructed into a skewed stage structure, and the skew angle (ϴ) (unit: degree) between adjoining units satisfies 26/m≤ϴ≤43.2/m (m is an integer equal to or greater than 2) in terms of electrical angle.
Inventors:
NAKANO MASATSUGU (JP)
HIROTANI YU (JP)
AKUTSU SATORU (JP)
UDO TOYOAKI (JP)
TAKIZAWA YUJI (JP)
HIROTANI YU (JP)
AKUTSU SATORU (JP)
UDO TOYOAKI (JP)
TAKIZAWA YUJI (JP)
Application Number:
PCT/JP2013/061786
Publication Date:
October 30, 2014
Filing Date:
April 22, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K21/12; H02K1/27
Domestic Patent References:
| WO2013054439A1 | 2013-04-18 |
Foreign References:
| JP2012254001A | 2012-12-20 | |||
| JP2012125006A | 2012-06-28 | |||
| JP2004274963A | 2004-09-30 | |||
| JP2010226935A | 2010-10-07 | |||
| JP2012157236A | 2012-08-16 | |||
| JP2009213284A | 2009-09-17 |
Other References:
See also references of EP 2991204A4
Attorney, Agent or Firm:
OIWA Masuo et al. (JP)
Masuo Oiwa (JP)
Masuo Oiwa (JP)
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