A Power Conversion System for AC Furnace With Enhanced Arc Stability
| Autor: | Peter Steimer, Yongsug Suh, Hyeoncheol Park, Yongjoong Lee |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Engineering
business.industry Nuclear engineering Thyristor Topology (electrical circuits) Industrial and Manufacturing Engineering AC/AC converter Power (physics) Electric arc Arc (geometry) Electrical resistance and conductance Modulation Control and Systems Engineering Control theory Computational electromagnetics Inverter Electrical and Electronic Engineering business Electric arc furnace |
| Zdroj: | IEEE Transactions on Industry Applications. 46:2526-2535 |
| ISSN: | 1939-9367 0093-9994 |
| Popis: | This paper proposes a criterion for ac arc stability and an optimal converter topology for a nonferrous metal ac arc furnace. The ac arc furnace rated for 36 kA/224 V/21 MW has been investigated. The key parameters of modified Cassie-Mayr arc model have been calculated by the electromagnetic and flow simulations for electric arc. The used arc simulation model has been validated by a laboratory free-burning arc setup. It has been shown that the steepness of arc current at zero-crossing determines the arc stability, and the associated peak arc resistance can be used as its quantitative measure. Among the evaluated three power converter systems, the forced commutated inverter topology with a six-step modulation realizes the steepest current at zero-crossing resulting in the best arc stability. The proposed converter topology having a high degree of arc stability is expected to bring about reliable operation of ac arc furnace and enhanced productivity of the total furnace system. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|