Arc furnace control system
US4029888A · kind A · utility
5Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1976 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | May 27, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric arc furnace control system is provided for positioning the furnace electrodes in accordance with the resistance of the arc. This is accomplished by balancing the arc current signal against a voltage signal multiplied by a signal representing the arc circuit power factor to provide an error signal. An analog command signal is then derived from the error signal to control the direction and speed of the electrode hoist drive motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.