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Electro-Process
and High Power Conversion
Measurement, Control & Protection |
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Applications : Aluminum
The “current efficiency” of the Aluminum smelting process ( how much current it takes to convert alumina to aluminum ) is the key cost element of production.
Improving process efficiency, increasing process current, upgrading of power conversion equipment and industry consolidations make accurate measurements crucial for maintaining competitiveness.
DynAmp focuses on two key parts of this process :
conversion of electrical power for use in the process, and
delivery and consumption of power in the process.
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Process Applications
With process efficiencies now exceeding 94% of the theoretical limit, tenths of percent mean significant changes in competitiveness. With individual pot-lines energy cost from $11m to over $75m at current levels approaching 500kA, even small measurement errors can hide large losses.
High accuracy measurement of voltage and current is needed to…
Provide current data to pot control systems for optimum control performance
Detect unexpected changes in process efficiency
Accurately evaluate impact of intended / trial process changes
Objectively compare multiple process lines and smelters
Improve visibility of process energy utilization and costs
Links to suitable DynAmp products
| LKCO | New high accuracy total process current measurement utilizing fiber optic sensing technology |
| LKP | for high accuracy total process current measurement |
Upgrades
| to improve performance of existing LKP, CM, FM & CXM systems |
Power Conversion Applications
Aluminum processes require the highest stability and reliability from power conversion equipment. Current instability leads to numerous process efficiency problems thereby increasing the costs.
Reliability of the power is paramount. Short term disruptions increase costs by running the pot-line at less than optimum capacity. Long-term disruptions can be catastrophic requiring an entire pot-line to be rebuilt.
Finally, catastrophic power conversion equipment failures can cause extremely hazardous events which endanger both staff and facility.
Highly dependable and responsive measurement systems are needed to
Provide current data to rectifier control systems for optimum performance and stability
Provide overall multi-rectifier balance indication
Provide a backup ‘totalized’ current measurement signal for total mainline current
Sense power conversion equipment failure modes quickly to protect process, equipment and personnel.
Analyze rectifier condition to determine internal balance for capacity analysis and maintenance actions
Links to suitable DynAmp products
| LKAT | for rectifier output measurement, control and balance with over/reverse current protection |
| LKP | for high accuracy rectifier output measurement, control and balance |
| Upgrades | to improve performance of existing LKP, CM, FM & CXM systems |
| BCMR | to protect rectifiers from over/reverse current events |
| BRP | New basic reverse current protection for rectifiers |
| RCEM | for internal rectifier analysis and condition monitoring |
| Clamp-On | for portable measurement |
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DynAmp, LLC
3735 Gantz Road
Grove City, OH, 43123, USA
Phone: (+1) 614-871-6900
Fax: (+1) 614-871-6910
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DynAmp Europe
Chemin des Aulx 8,
1228 Plan-les-Ouates, Geneva, Switzerland
Phone: (+41) 22 706 1446
Fax: (+41) 22 706 1311 |
Copyright © 2009 DynAmp, LLC
All Rights Reserved
help@dynamp.com
( formerly Halmar and LEM DynAmp )
To visit LEM Group, click here 
Updated: 1 September 2009 |
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