Title:
METHOD OF CONTROLLING FIELD OF SYNCHRONOUS MOTOR
Document Type and Number:
Japanese Patent JP2004159438
Kind Code:
A
Abstract:
To provide a method of controlling a synchronous motor for a rolling mill on a hot rolling line.
This method has a process of computing required toque in a real time, based on the number of revolutions and the armature current of the synchronous motor; and a process of deciding a field current value needed at worst, based on the required torque. The current is controlled into a decided field current value in a real time.
Inventors:
MOMOTAKE JUNJI
Application Number:
JP2002323286A
Publication Date:
June 03, 2004
Filing Date:
November 07, 2002
Export Citation:
Assignee:
JFE STEEL KK
International Classes:
B21B37/00; B21B37/52; H02P21/02; H02P23/00; H02P23/02; (IPC1-7): H02P7/62; B21B37/00
Attorney, Agent or Firm:
Eiichi Kobayashi
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