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18.09.2017
Variable-speed compressor performs well under partial load
Kaeser Kompressoren, Coburg, Germany, is now offering its ASD series of variable-speed compressors equipped with synchronous reluctance motors – a major advantage owing to their considerably lower losses in the crucial partial-load range, compared to asynchronous motors. With Sigma Profile and innovative drive concepts, Kaeser's ASD series of rotary screw compressors offers flow rates ranging from 3.15 to 5.5m³/min, delivering high performance and reliability, combined with energy efficiency and space-saving design. This latest technology, which has been developed in close partnership with Siemens, is said to deliver efficiency gains of up to ten per cent in the partial-load range. This drive principle has been understood for decades, but only now has its implementation in production series motors attained the technical capability required to benefit worldwide users.
With the variable-speed versions (SFC) of the ASD series, the company is able to offer customers an opportunity to embark on a path of minimal energy consumption – and minimal operating costs. This is important because compressed air stations are often constructed on a modular basis: continuously running compressor systems with IE3 and IE4 motors cover base load demand, whilst additional peak-load compressors respond flexibly to meet extra demand; the system as a whole is controlled and co-ordinated by a SIGMA AIR MANAGER 4.0 master controller to ensure maximum efficiency. www.kaeser.com
By using synchronous reluctance motors, Kaeser has boosted energy efficiency in the crucial partial load range
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