Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
交流アーク炉の電極昇降制御装置
Document Type and Number:
Japanese Patent JP4786952
Kind Code:
B2
Abstract:

To provide an electrode lifting control device of AC arc furnace having a function of making electric current flow as established even in the case the current setting value of each phase is set at different values in the AC arc furnace which carries out melting and refining by three-phase AC arc heating.

Current setting value Iset of each phase is inputted into the three-phase AC circuit model of the AC arc furnace, and a voltage value Eiu at a voltage detection point of each phase is calculated, and the voltage value Eib at the voltage detection point in the case the current setting value of each phase is made identical is calculated, and by multiplying the ratio kiv (=Eib/Eiu) to the voltage detection value Ei of corresponding phase, the voltage detection value Ei of that phase is corrected.

COPYRIGHT: (C)2007,JPO&INPIT


Inventors:
Norio Ao
Application Number:
JP2005205789A
Publication Date:
October 05, 2011
Filing Date:
July 14, 2005
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Steel Plantech Co., Ltd.
International Classes:
H05B7/152; F27B3/28; F27D11/10
Domestic Patent References:
JP7161473A
JP1062077A
Attorney, Agent or Firm:
Kenichiro Ochiai