Synchronous reluctance motors replace induction motors
As is tradition, the Rügenwalder Teewurst is smoked over beechwood. Beechwood is ideal for the purpose as the embers produce a mild, aromatic smoke that is easily absorbed by the meat.
The wood smoke is produced in smoke generators and blown by fans into the smokehouse, which contains the food. Since 1992 the fans had been driven by two-pole induction motors. It was decided to replace these with modern IE4 synchronous reluctance motors, in order to achieve a significant reduction in energy use.
The ABB synchronous reluctance motor is fitted with an innovative rotor in combination with a conventional stator. In contrast to traditional motors, the rotor has no windings and no magnets. The result is that power loss, which accounts for around 40 percent of energy loss in an electric motor, is virtually eliminated.