Digital current control of electric arc furnace by parallel modular three-phase IGBT inverters
Digital current control of electric arc furnace by parallel modular three-phase IGBT inverters
- Neue Suche nach: Calligaro S.
- Neue Suche nach: Petrella R.
- Neue Suche nach: Calligaro S.
- Neue Suche nach: Petrella R.
- Neue Suche nach: Calligaro, S.
- Neue Suche nach: Petrella, R.
Electric Arc Furnaces (EAF) have been traditionally fed by means of a medium to low voltage transformer (between grid and electrodes), where the main control action consists of modifying the electrodes vertical position. This simple and robust arrangement suffers from grid “pollution” and poor current control. Current control of EAF by means of three phase modular inverters is reported here for the first time. Several control issues are analyzed and addressed, ranging from pure control (e.g. addressing load imbalance and limits due to low switching frequency) to system management. Two different current regulation methods are proposed and compared, namely a scalar approach and a vector method using “quasi zero phase lag” sampling and gains adaptation. The second technique achieves very good control, leading to lower oversizing of the converter stage and process optimization. Simulations have been performed including digital controller architecture, converters and arc electrical behavior. Preliminary experimental measurements are reported based on an actual plant.
Dokumentinformationen
Digital current control of electric arc furnace by parallel modular three-phase IGBT inverters
2019-01-01
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Ähnliche Titel
IGBT device application aspects for 50-kW zero-current-transition inverters
| Tema Archiv | 2004
Dynamic IGBT gate drive for vehicle traction inverters
| Europäisches Patentamt | 2019
Three-phase soft-switching inverters for electric vehicle applications
| Tema Archiv | 1995
IGBT Open-Circuit Fault Diagnosis for Closed-Loop System of Three-Level NPC Inverters
| Springer Verlag | 2016