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Patent Searching and Data


Title:
AC EXCITING DYNAMO-ELECTRIC MACHINE
Document Type and Number:
Japanese Patent JP2009303396
Kind Code:
A
Abstract:

To provide an AC exciting dynamo-electric machine capable of supplying high quality electric power, by reducing the distortion of voltage waveform by slot harmonic of the AC excited dynamo-electric machine.

The AC excited dynamo-electric machine is provided with magnetic wedges, which are positioned at the outside circumferential side of a rotor core to non-magnetic wedges, inserted in rotor slots, and fitted to the rotor core so as to be prevented from moving outside the radial direction of at least the rotor core. Fatigue destruction due to vibration does not occur on the magnetic wedges and ripples of magnetic resistance of a gap are reduced, so that the slot harmonics can be improved; and high quality electric power can be supplied, by reducing the distortion of the voltage waveform by the slot harmonics.


Inventors:
YAMASHITA HIROYUKI
TERAYAMA YUICHIRO
Application Number:
JP2008155550A
Publication Date:
December 24, 2009
Filing Date:
June 13, 2008
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02K3/493
Domestic Patent References:
JPS63161834A1988-07-05
JPS61177143A1986-08-08
Attorney, Agent or Firm:
大岩 増雄
児玉 俊英
竹中 岑生
村上 啓吾