Title:
ROLLING SYSTEM CONTROL DEVICE AND ROLLING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/111647
Kind Code:
A1
Abstract:
Provided is a rolling system control device (40) that is inexpensive and can achieve highly accurate power factor compensation. Accordingly, the rolling system control device (40) is applied to a rolling system having: a measurement unit that is attached to an electric path and measures electric path power factor information for specifying the power factor in the electric path; and a variable speed drive device (60) that converts the frequency of an AC voltage to another frequency and outputs the converted frequency, said AC voltage being input from the electric path in order to drive a rolling machine drive motor. The rolling system control device (40) is provided with: a receiving terminal (43) for receiving the electric path power factor information from the measurement unit; and command value generation units (48-1 to 48-M) for outputting command values (Pq1* to PqM*) that generates reactive power having a leading power factor or a lagging power factor with respect to the variable speed drive device (60) on the basis of the electric path power factor information.
Inventors:
TAJI KAZUAKI (JP)
SHIGA HIROMI (JP)
SHIGA HIROMI (JP)
Application Number:
PCT/JP2018/041936
Publication Date:
June 13, 2019
Filing Date:
November 13, 2018
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H02J3/18; B21B37/00; H02P5/46; H02P23/26; H02P27/06; H02P27/16
Foreign References:
| JPH06113546A | 1994-04-22 | |||
| JPH0297221A | 1990-04-09 | |||
| JPH07288932A | 1995-10-31 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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