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Patent Searching and Data


Title:
アーク電気炉用の予測式ラインコントローラ
Document Type and Number:
Japanese Patent JP4562216
Kind Code:
B2
Abstract:
An electric arc furnace comprises a power source (5) for applying a voltage to an electrode (27A, 27B, 27C), the electrode being spaced apart from a grounded container for receiving scrap metal (29), such that the application of the voltage to the electrode causes generation of an arc between the electrode and the container for melting the scrap metal. The electric arc furnace includes a predictive line controller (11) comprising a plurality of switches intermediate the power source and the electrode, and a central controller for monitoring the voltage and generating a signal model thereof. The central controller generates and applies gating signals to the plurality of switches, the gating signals being delayed by respective predetermined amounts based on the model, for causing the switches to gate the voltage so as to minimize flicker in the electric arc furnace.

Inventors:
Hassan Ali Kojori
Application Number:
JP3505599A
Publication Date:
October 13, 2010
Filing Date:
February 12, 1999
Export Citation:
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Assignee:
HATCH LTD.
International Classes:
F27D11/08; F27D19/00; H02J3/18; H02J3/24; H05B7/00; H05B7/148; F27B3/08
Domestic Patent References:
JP49073737A
JP5347182A
JP10294174A
JP62060013A
JP50077854A
JP62060015A
JP2001506385A
JP3037516U
JP2278317A
JP7170742A
JP6325867A
JP6283264A
JP7091864A
JP8078156A
JP10106745A
JP5190278A
JP4177085A
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazuho
Nishimoto Shoichi