Title:
LOAD OPERATION CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/207748
Kind Code:
A1
Abstract:
A drive shaft (20) rotationally drives a load. A drive support unit (50) rotationally drives the drive shaft (20) by an electromagnetic force generated by the passage of a current within a predetermined current range, and also supports, in a non-contact fashion, the radial load of the drive shaft (20). A control unit (91a) controls the operation of the load on the basis of a degree of margin in magnetic flux which is expressed as a difference between the total magnetic flux amount generated in the drive support unit (50) and a limit total magnetic flux amount determined in advance in the drive support unit (50). The total magnetic flux amount includes: a driving magnetic flux generated in the drive support unit (50) for rotationally driving the drive shaft (20) in a predetermined operation region of the load; and a supporting magnetic flux generated in the drive support unit (50) for supporting the radial load of the drive shaft (20).
Inventors:
NAKAZAWA YUJI (JP)
SAKAWAKI ATSUSHI (JP)
SAKAWAKI ATSUSHI (JP)
Application Number:
PCT/JP2018/017690
Publication Date:
November 15, 2018
Filing Date:
May 08, 2018
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
H02P25/022; F04D27/02; F24F11/62; F25B1/053; H02K7/09; H02K7/14; H02P27/04
Foreign References:
| JP2001339979A | 2001-12-07 | |||
| JP2017061913A | 2017-03-30 | |||
| JP2014126174A | 2014-07-07 | |||
| JP2013127221A | 2013-06-27 | |||
| JP2013127221A | 2013-06-27 |
Other References:
See also references of EP 3605833A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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