Title:
ELECTROMAGNETIC ROTATING MACHINE
Document Type and Number:
Japanese Patent JP3550584
Kind Code:
B2
Abstract:
PURPOSE: To detect the displacement of a rotor without providing a displacement sensor.
CONSTITUTION: A controller 82 estimates the displacement of a rotor 50 by performing operation from the currents Iu2, Iv2, and Iw2 of position control winding C2, a primary current frequency command value 2ω, and the output current (or voltage) of an inverter 56. And, based on the displacement of the rotor 50 estimated with this controller 82, a modulator 84, a three-phase - two- phase converter 86, and a voltage control inverter 88 control the current of the position control winding C2. Hereby, the magnetic field made by the motor winding C4 becomes unbalanced, and magnetic force works in radial direction on the rotor 50, and the position control is performed.
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Inventors:
Tadashi Fukao
Akira Chiba
Riki Oka
Akira Chiba
Riki Oka
Application Number:
JP12049795A
Publication Date:
August 04, 2004
Filing Date:
April 21, 1995
Export Citation:
Assignee:
Tadashi Fukao
Akira Chiba
Riki Oka
Ebara Corporation
NIKKISO CO.,LTD.
Akira Chiba
Riki Oka
Ebara Corporation
NIKKISO CO.,LTD.
International Classes:
F16C32/04; F16C39/06; H02K7/09; H02P27/06; (IPC1-7): H02K7/09; F16C32/04; H02P5/41
Domestic Patent References:
| JP3107615A | ||||
| JP64055031A | ||||
| JP2193547A | ||||
| JP3107615A | ||||
| JP7255147A |
Attorney, Agent or Firm:
Takashi Kawai
Hitoshi Nakano
Masaaki Sakagami
Hitoshi Nakano
Masaaki Sakagami