Title:
CONTROL DEVICE FOR ELECTRIC COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2014/073365
Kind Code:
A1
Abstract:
Provided is a control device for an electric compressor capable of suitably controlling a motor in response to load variations having a complex frequency component even when controlling a motor using a sensorless system. The control device for an electric compressor comprises: a repeating control unit (5) which receives input of the difference in rotational speed between a target rotational speed and an estimated rotational speed of a motor driving the compressor, and which continues to reduce the difference between the rotational speeds by repeating operations using the difference between the rotational speeds from the cycle immediately prior to the current cycle for the compressor; a pressure detection unit (1) for the compressor; and a reset signal generation unit (4) which calculates a timing for one rotation of the compressor by counting the number of prescribed components in the load variations of the compressor on the basis of the pressure value of the compressor, and outputs a reset signal to the repeating control unit (5) in accordance with the timing.
Inventors:
OSAMURA KENSUKE (JP)
OONEDA YOUSUKE (JP)
HIRATA MITSUO (JP)
TASHIRO NAOYA (JP)
OONEDA YOUSUKE (JP)
HIRATA MITSUO (JP)
TASHIRO NAOYA (JP)
Application Number:
PCT/JP2013/078543
Publication Date:
May 15, 2014
Filing Date:
October 22, 2013
Export Citation:
Assignee:
CALSONIC KANSEI CORP (JP)
UNIV UTSUNOMIYA (JP)
UNIV UTSUNOMIYA (JP)
International Classes:
H02P27/06; H02P21/14; H02P21/18; H02P21/22; H02P21/24; H02P23/12; H02P23/14; H02P23/16; H02P29/00
Foreign References:
| JPH04323705A | 1992-11-12 | |||
| JP2010088200A | 2010-04-15 | |||
| JPH09201086A | 1997-07-31 | |||
| JP2008092718A | 2008-04-17 |
Attorney, Agent or Firm:
Shin-Ei Patent Firm, P. C. (JP)
Patent business corporation Shin-Ei Patent Firm (JP)
Patent business corporation Shin-Ei Patent Firm (JP)
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