Title:
ELEVATOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2004/001952
Kind Code:
A1
Abstract:
Individual current control units are provided to respective motor winding systems of a multi-winding motor that constitutes a hoisting machine (6) for lifting/lowering a cage (8) to give the same torque instruction, and Ѳa and Ѳb obtained by respectively adding magnetic pole adjustment elements (Ѳadja, Ѳadjb) to an output (Ѳ) from a rotation detector (10) are given to a 3-phase/2-phase converter and a 2-phase/3-phase converter to thereby control a q-axis current uniformly and control a magnetic flux in each system to be equal, whereby it is possible to improve a current imbalance between motor winding systems.
Inventors:
TAKEDA YASUAKI
Application Number:
PCT/JP2003/007869
Publication Date:
December 31, 2003
Filing Date:
June 20, 2003
Export Citation:
Assignee:
TOSHIBA ELEVATOR KK (JP)
International Classes:
H02P27/04; B66B1/30; B66B3/00; H02P5/747; H02P6/06; H02P6/08; H02P6/10; H02P6/28; H02P21/00; H02P21/05; H02P21/12; H02P21/22; H02P23/04; H02P23/16; H02P27/08; (IPC1-7): H02P21/00; B66B1/30; B66B3/00
Foreign References:
| JP2001086794A | 2001-03-30 | |||
| JP2733724B2 | 1998-03-30 | |||
| JPH1160103A | 1999-03-02 | |||
| JPH09205797A | 1997-08-05 | |||
| JPH10265140A | 1998-10-06 | |||
| JP2887861B2 | 1999-05-10 | |||
| JPH0733342A | 1995-02-03 |
Attorney, Agent or Firm:
Yamashita, Hajime (8th Floor Sumitomo-Hamamatsucho Building,
18-16, Hamamatsucho 1-chom, Minato-ku Tokyo, JP)
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