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motor windingAchieve an efficiency of 97% without rare earth? This is possible with the alternative motor winding of three-phase asynchronous motors (DAM) and three-phase generators, which the company Umwelt-Technik-Marketing presented at the specialist press days 2020. These motors do not need permanent magnets. Such a winding reduces the use of materials, especially copper. The DAM constructed in this way achieve an efficiency of class IE 4 and dispense with rare earths for the production of permanent magnets in the windings of the motor.

Because of DAM's large production volume, the reduction in the use of critical raw materials in the windings is of considerable importance for ensuring the availability of these raw materials. This applies in particular to areas in which substitution is not possible.

CO2 friendly motor winding

The motor construction uses less copper and completely without permanent magnets. It completely dispenses with the use of rare earths. By saving critical raw materials, production is environmentally friendly. CO2 is reduced. With the new technology, a DAM of efficiency class IE4 can be constructed much more compact and therefore easier. The motors are therefore particularly suitable for installation in tight spaces. It is also possible to retrofit an existing engine. They are easy to wrap around. Areas of application for electric motors with alternative windings are found in trade and industry, as well as in electric cars, electric motorbikes and e-bikes. This is of considerable economic importance.

Crazy Automation Award for motor winding

The editorial office Stutensee presented the Crazy Automation Award for the first time at this year's trade press days. Over 40 specialist journalists from the industry attended and voted and dedicated the prize to innovative motor winding. At the two-day event, 30 companies presented their new developments in the fields of sensors, actuators, control, measurement and regulation technology, production as well as security technology and communication.

Image: The Crazy Automation Award 2020 of the editorial office Stutensee goes to environmental technology marketing for the alternative motor winding for three-phase asynchronous motors.


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