Title:
CONTROL DEVICE FOR ROLLING SYSTEM AND ROLLING SYSTEM
Document Type and Number:
Japanese Patent JP2019103296
Kind Code:
A
Abstract:
To provide a control device for a rolling system which is inexpensive and can realize high precision power factor compensation.SOLUTION: A control device 40 for a rolling system is applied to a rolling system including a measurement unit mounted on an electrical path and measuring electrical path power factor information for specifying a power factor in the electrical path and a variable speed drive device 60 which converts the frequency of an AC voltage input from the electric path into another frequency and outputs the frequency to drive a rolling mill drive motor, and includes a receiving terminal 43 that receives the electrical path power factor information from the measurement unit and command value generation units 48-1 to 48-M that output command values Pq1* to PqM* for generating reactive power of leading power factor or delay power factor to the variable speed drive device 60 on the basis of the electrical path power factor information.SELECTED DRAWING: Figure 2
Inventors:
TAHARU KAZUAKI
SHIGA HIROMI
SHIGA HIROMI
Application Number:
JP2017233307A
Publication Date:
June 24, 2019
Filing Date:
December 05, 2017
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02P27/06; H02P5/46
Domestic Patent References:
| JPH06113546A | 1994-04-22 | |||
| JPH0297221A | 1990-04-09 | |||
| JPH07288932A | 1995-10-31 |
Attorney, Agent or Firm:
Isono International Patent and Trademark Office