PERMANENT MAGNET ENERGY SERIES

Direct driven variable speed rotary screw compressors with permanent magnets motor

The PERMANENT MAGNET ENERGY Series offers high energy savings of up to 40% over standard controlled machines. Due to the installation of the permanent magnets motor, service life is extended and reliability is improved. The use of advanced technology in the design and research, together with thermodynamics and pneumomechanics has produced the permanent magnet energy range. Giving the most energy efficient rotary screw compressor on the market by minimum of 10% over standard variable drive rotary screw compressors.

Permanent Magnets Motor

MAGNETIC ENERGY screw compressors feature a Permanent Magnets motor:

• Electrical losses reduction thanks to the basis magnetic field formation.
• Electrical losses reduction in power electronics.
• Constant motor torque in a wide range of rotation speeds.

The losses reduction produce an increase in the overall compression system efficiency, matched with a Variable Speed Drive, results in the best possible performances in terms of energy consumption and overall compressor life and reliability.

The application of a frequency inverter offer many advantages:

• regulation of the speed of the motor to match constantly the plant air demand.
• provides a constant air pressureselectable to any value between 6 to 10 Bar (13Bar on request)
• soft start reduces current peaks and allows for additional energy savings
• Air output constantly varying between 25% and 100% of the compressors total capacity
• Magnetic Energy

Variable Speed Drive

The purchasing cost of an air compressor represents on average a small percentage of the total cost of operating the compressor over its life time. The power required to the machine (kW/hr) is absolutely the highest cost during this time. Compressed air is used in all industries, it can be very expensive if incorrectly operated. Measurements conducted on a typical application shows how the air demand varies constantly during the daily and weekly cycles. A conventional on load / off load compressor uses large amounts of energy when air is not required , compared to a variable speed drive compressor fitted with a permanent magnets motor.

Energy Consumption Comparison - Permanent Magnet Energy 40% Saving

PERMANENT MAGNET ENERGY variable speed drives average 40% saving, Variable speed standard motors average 30% saving, Standard control stop / start no energy saving. Taking into account the initial higher capital exposure on a permanent magnet variable speed compressor and the energy saving of up to 40% over standard control compressors, initial payback on capital could be made within a very short period given the correct selection of a permanent magnet variable speed drive rotary screw air compressor.