Adjustable Speed Magnetic Coupling
Adjustable Speed Coupling Technology

Adjustable Speed Coupling Technology was developed at Magna Force to expand the capabilities delivered by Fixed Gap Coupling Technology. These designs delivered many of the same benefits derived from Fixed Gap Coupling Technologies, with the added benefits of speed control. Speed control is achieved by applying slight variations to the air gap separating the two main coupling components, a magnet rotor containing the magnet array and a conductor made of copper or aluminum.

As the air gap is widened, the speed of the driven process equipment slows. Early testing and case studies verified that Adjustable Speed Couplings Technology can save as much as 66% of the motor systems energy demand and thousands of dollars of annual maintenance costs.

Adjustable Speed Coupling

Adjustable Speed Magnetic Coupling

In January of 1999, the Northwest Energy Efficiency Alliance awarded a total of $2.1 million in support of the market transformation of Magna Force, Inc.'s Adjustable Speed Coupling Technology through a phased contract for the Field Testing of Breakthrough Speed Control Technology on Fan, Pump and Blower Applications in NW Industrial and Commercial Applications.

In 2001, Adjustable Speed Coupling Technology was chosen as Technology of the Year in Industry Week Magazine's Ninth Annual Technology and Innovation Awards Program.

Fixed Gap Coupling

Reaction & Response

  • "The drives maintain the same 4800 GPM flow while reducing energy demand from 142 to 62 kW, this translates to a savings of over 700,000 kWh per year."
  • "The pump is slowed down, energy demand drops. This reduces energy costs by approximately $18,800 per year, and potentially reduces costly demand charges."
  • "The motor and coupling were downsized from 60 HP to 20 HP, reducing energy demand by nearly 28%."
  • "Vibration and shaking in the piping was eliminated, significantly reducing future maintenance and replacement costs."
  • "Duration of locked rotor current on start-up was reduced significantly, prolonging motor life and eliminating the possibility of voltage sags that disrupt electronic equipment."
  • "Pressure at the pivot is down to 40 pounds; reducing water consumption by 35%."
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