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Title:
LINEAR COMPRESSOR AND LINEAR COMPRESSOR CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/176471
Kind Code:
A1
Abstract:
Provided are a linear compressor and a linear compressor control system which do not require a sensor for detecting the position of a mover and can calculate the mover position with high accuracy in consideration of the position dependency of an induced voltage constant. A linear compressor 20 comprises: a field element 11 having a permanent magnet 111 connected at one end to an elastic bodies (201a, 201b); an armature 12 having a winding 122 wound around a magnetic pole 121; and a linear motor 10 that causes the field element 11 and the armature 12 to relatively reciprocate in the axial direction. The stroke of a piston 212 connected to the other end of the field element 111 is controlled so that the position at which the gradient of the induced voltage at a predetermined value of the induced voltage calculated based on the voltage command value output to the linear motor 10 and the current value flowing through the winding 122 is within a predetermined range becomes the top dead center and/or the bottom dead center of the stroke of the piston.

Inventors:
HOTTA Kaito (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
HATSUSE Wataru (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
KOYAMA Masaki (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
ITO Tsutomu (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
KAWAI Yoshinori (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2019/006066
Publication Date:
September 19, 2019
Filing Date:
February 19, 2019
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (3 Kanda Neribei-cho, Chiyoda-ku Tokyo, 22, 〒1010022, JP)
International Classes:
F04B35/04; H02P7/02
Foreign References:
JP2003065244A2003-03-05
JP2004007890A2004-01-08
JP2002138957A2002-05-17
JP2007506024A2007-03-15
Attorney, Agent or Firm:
POLAIRE I.P.C. (13-11, Nihonbashikayabacho 2-chome Chuo-k, Tokyo 25, 〒1030025, JP)
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