MRO Magazine

New Hybrid Motors Use Less Space And Save Big On Running Costs (June 01, 2009)

What happens when you take the latest in AC induction motor technology and combine it with established brushless permanent magnet motor principles? The Lafert HP series technology answers this questio...


Industry

June 1, 2009
By MRO Magazine

What happens when you take the latest in AC induction motor technology and combine it with established brushless permanent magnet motor principles? The Lafert HP series technology answers this question with a motor that can produce savings of up to 80% in energy costs, while offering the capability of significant frame size reductions and weight savings of approximately 50%. Integrating these technologies provides substantial efficiency advantages over conventional AC induction motors. Stator currents are lower, generating lower losses due to low current demand, which in turn reduces temperature in the windings and bearings. These low-temperature rises can eliminate the need for a cooling fan and its related losses, thereby allowing higher running speeds and extending bearing life.

Furthermore, when the motor is combined with a Lafert sensorless drive, the motor’s operation can be tuned to match an application’s specific requirements to further maximize efficiency. The performance characteristics of this hybrid motor make it ideal for continuous duty applications while delivering constant torque and superior efficiency across the whole speed range.

In essence, the new Lafert HP series offers the possibility of achieving signifi-cant savings on running costs, in smaller frames that will run cooler and quieter, reducing space demands and enhancing the work environment.

The HP series is particularly suited for applications involving pumps, fans and compressors. The range includes single-phase power ratings of 0.75 kW to 2.2 kW and three-phase supply versions of 0.75 kW to 22 kW in both 50 Hz and 60 Hz applications. These units are available with a built-in drive or as a standalone unit that is compatible with most other manufacturer’s drives.

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