Abstract
This paper presents a novel high-speed drive and frictionless suspension system for a rotor spinning unit which opens up the field for further textile technology development, potentially leading to higher productivity, reduced power consumption, and dust deposit. In contrast to conventional rotor spinning machines, individually driven rotors are open on both sides, which allows better arrangement of related spinning components. To achieve a very high lifetime, the rotor is suspended by means of active magnetic bearing. Outstanding energy efficiency can be achieved due to the frictionless magnetic suspension of the rotor and a slotless electronically commutated permanent-magnet motor in conjunction with an optimized frequency inverter.
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