Title:
ELECTRIC MOTOR ELEMENT, ELECTRIC MOTOR, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/198866
Kind Code:
A1
Abstract:
Provided is an electric motor element including a stator and a rotor having a plurality of magnetic poles. The rotor includes a configuration having a magnetic salient polarity. The configuration having the magnetic salient polarity includes: a plurality of d-axis magnetic flux paths for generating a magnet torque among the rotational torque components generated by the rotating magnetic field from the stator; and a plurality of q-axis magnetic flux paths for generating a reluctance torque among the rotational torque components. A part of each of the d-axis magnetic flux paths includes a bond magnet portion, and a part of each of the q-axis magnetic flux paths includes the bond magnet portion or an adjacent portion that is different from the bond magnet portion and makes contact with the bond magnet portion. When the extended line of the line connecting the center of the plurality of magnetic poles and the center of the rotation axis of the rotor is defined as a d-axis and the line shifted by an electrical angle of 90 degrees with respect to the d-axis and passing through the center of the rotation axis of the rotor is defined as a q-axis, a magnetization direction of a bond magnet portion main section that is a main section of the bond magnet portion positioned at a site adjacent to the q-axis is one angle among the four angles at the intersection point formed by a magnetization direction virtual extended line in the magnetization direction and the q-axis. The one angle is an angle portion sandwiched by a q-axis segment between the intersection point and the outer circumference of the rotor among the segments included in the q-axis and the magnetization direction virtual extended line. The angle of the angle portion is 30 degrees to 150 degrees.
Inventors:
OKADA YUKIHIRO
TSUTSUMI SHINICHI
OGAWA TAKASHI
UEDA HIROSHI
YOSHIKAWA YUICHI
TSUTSUMI SHINICHI
OGAWA TAKASHI
UEDA HIROSHI
YOSHIKAWA YUICHI
Application Number:
PCT/JP2018/015754
Publication Date:
November 01, 2018
Filing Date:
April 16, 2018
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02K1/27
Domestic Patent References:
| WO2017038489A1 | 2017-03-09 |
Foreign References:
| JP2017005916A | 2017-01-05 | |||
| JP2005020991A | 2005-01-20 | |||
| JP2001107133A | 2001-04-17 | |||
| JP2017051051A | 2017-03-09 | |||
| JP2011229358A | 2011-11-10 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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