Based in Somerset, Aggregate Industries’ (AI) torr works plant is benefitting from significant cost savings and improved system reliability, after four new conveyors with bespoke variable speed drive (VSD) bypass technology were installed.
This concept was requested by the customer and developed by Siemens. Processing up to 2500 tph of quarried product, the four new conveyors offer reduced air conditioning requirements, while also delivering a high torque start for the conveyors.
The installation of new conveyors follows a sustained period of growth for AI, which holds a long-standing relationship with Siemens. Siemens’ VSD bypass technology solution is expected to deliver annual energy savings of up to £10 000 per conveyor, as well as significantly reducing initial capex expenditure over the conventional approach.
The new VSD bypass system also eradicates requirements for harmonic correction, cancelling the entire spectrum of harmonic currents at the point of connection. Simultaneously this improves system reliability, through ensuring equipment operates with lower losses and heat generation.
“Having the right equipment which is able to operate reliably and efficiently is fundamental to our success as a business,” said David Brown, AI’s National Electrical Engineer Manager. “Using conventional VSD approach for this application has proven in the past to present us with long-term challenges and therefore we are keen to identify an innovative alternative approach for our new £10 million investment. Our long-standing relationship with Siemens meant not only did they understand our business and the nuances of the minerals sector, but they also provided us with the confidence that the solution they developed would lay the foundations for our future growth plans, while providing long term reliability.”
“When installing converter systems into a quarry environment there are a number of key factors to bear in mind, such as power quality, which means considering harmonic distortion and the compliance with current regulations,” said Chris Medd, Business Manager at Siemens. “These considerations would have involved significant cost and additional system inefficiencies for a traditional design, whilst our installed solution means we have delivered a cost-effective and optimised solution, which has achieved and exceeded AI’s initial brief.”
Siemens worked in partnership with Komatsu and Nexdorf Electrical Engineering following the development of the solution, to deliver the mechanical elements of the projects and system integration.
Siemens is a global technology powerhouse, standing for excellence, innovation, quality, reliability, and internationality. AI is a leading player in the construction and infrastructure industries.
Read the article online at: https://www.worldcement.com/europe-cis/27092018/aggregate-industries-reaps-benefits-of-using-bespoke-siemens-solution/