Title:
PERMANENT MAGNET BRUSHLESS MOTOR
Document Type and Number:
WIPO Patent Application WO/2015/151344
Kind Code:
A1
Abstract:
The purpose of the present invention is to simultaneously achieve a decrease in cogging torque and torque ripple and a decrease in vibration and noise of a motor in a widely ranging rotational speed region including a field-weakening region. In a brushless motor (1000) equipped with a concentrated winding stator (200) and a surface permanent magnet rotor (500), a magnetic hole region (205) and a structure (207, 209) for increasing the magnetic resistance between adjacent teeth are formed extending in a motor shaft direction in a rotor-side end central portion of teeth (204) and in a rotor-side end flange portion of the teeth (204), respectively.
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Inventors:
KITAMURA MASASHI (JP)
KANAZAWA HIROSHI (JP)
KAWASAKI SHOZO (JP)
IWASAKI NORIHISA (JP)
KANAZAWA HIROSHI (JP)
KAWASAKI SHOZO (JP)
IWASAKI NORIHISA (JP)
Application Number:
PCT/JP2014/082725
Publication Date:
October 08, 2015
Filing Date:
December 10, 2014
Export Citation:
Assignee:
HITACHI CAR ENG CO LTD (JP)
International Classes:
H02K1/14; H02K1/18
Foreign References:
| JP2006187131A | 2006-07-13 | |||
| JPH08275415A | 1996-10-18 | |||
| JP2002165391A | 2002-06-07 | |||
| JP2002078267A | 2002-03-15 |
Attorney, Agent or Firm:
KAICHI IP (JP)
Patent business corporation development-of-knowledge international patent firm (JP)
Patent business corporation development-of-knowledge international patent firm (JP)
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