Title:
ROTOR AND ROTARY ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/244240
Kind Code:
A1
Abstract:
This rotor has a rotor core (21) having a rotor slot (22) formed therein in which a rotor conductor (23) is accommodated. The rotor slot (22) has: an inner slot (26) as a first slot; and an outer slot (27) as a second slot which is located closer to the outer peripheral surface (25) of the rotor core (21) than the first slot and is connected to the first slot. In a cross-section perpendicular to a central axis that is the rotation center of the rotor, the outer shape of the second slot includes a plurality of vertexes formed by bent ridgelines which constitute the outer shape. The plurality of vertexes include: a vertex (27a) as a first vertex, which is closest to the outer peripheral surface among the plurality of vertexes; and a vertex (27b) as a second vertex, which is second closest to the outer peripheral surface (25) following the first vertex. The interval between the second vertex and the outer peripheral surface (25) is larger than the skin depth of a harmonic component which is a component of a frequency higher than a driving frequency of the rotor in a current flowing through the rotor conductor (23).
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Inventors:
OKADA YOSHIKI (JP)
KOMETANI HARUYUKI (JP)
HAZEYAMA MORIYUKI (JP)
MIZUTA TAKAHIRO (JP)
OGUMA YOSHIAKI (JP)
KOMETANI HARUYUKI (JP)
HAZEYAMA MORIYUKI (JP)
MIZUTA TAKAHIRO (JP)
OGUMA YOSHIAKI (JP)
Application Number:
PCT/JP2018/023276
Publication Date:
December 26, 2019
Filing Date:
June 19, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K17/18
Domestic Patent References:
| WO2015001601A1 | 2015-01-08 | |||
| WO2013150645A1 | 2013-10-10 |
Foreign References:
| US6246141B1 | 2001-06-12 | |||
| US20180123432A1 | 2018-05-03 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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