About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Reduction Technology
|
| Presentation Title |
Advanced Design of a 4.0 Modular Smart Ohmic Shunt (4.0 MSOS) For Troubleshooting Malfunctioning Cell While Overcoming High -Anode Effect Voltage Occurrence. |
| Author(s) |
Joseph Ndjebayi Nloga, Pierre-Luc Voyer, Herman Vermette, Dave Dugas, Emmanuel De Varennes |
| On-Site Speaker (Planned) |
Joseph Ndjebayi Nloga |
| Abstract Scope |
During normal operations, aluminum smelters may experience cell disturbances, or they may proactively shut down cells intending to restart them. Significantly disturbed cells may require additional voltage exceeding 5-6 Volts to stabilize. Prolonged exposure of the cell to this voltage, particularly at the amperage exceeding 400-500KA, is detrimental and may cause side burst. The advanced 4.0MSOS system diverts up to 100 kiloampere away from a compromised cell to mitigate this issue. In contrast to traditional shunts, which overheat, and melt should the voltage surpass 5V, this model claims operational capabilities across a voltage level exceeding 7 V. To enhance durability, the 4.0MSOS incorporates a wide range of protective capabilities. This includes over-voltage protection and an automatic self-switch-off function—a critical design element preventing damage to the coils during anode effect. Smelters will significantly benefit from faster cell-upset recovery, leading to stable, cost-effective operation, reduced shunt maintenance and extended cell lifespans. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Process Technology, Aluminum, Other |