Ksb Aktiengesellschaft

Ksb Se & Co. Kgaa

Endress+hauser Conducta Gesellschaft Fur Mess- Und Regeltechnik Mbh+co. Kg

Joachim Schullerer

Detlev Wittmer

Michael Gunzert

Jochen Schaab

Daniel Gontermann

Manfred Oesterle

Bernd Schramm

Stefan Laue

Gerd Ebelt

Martin Eckl

Ursula Kronfeld

Georg Herzing

Patrick Hauck

Christoph Hamkins

Alexander BÖHM

A method for controlling a machine with at least one inverter-operated electric drive unit includes determining the instantaneous mains frequency of the mains supply to the machine and a deviation of the determined mains frequency over a standard frequency of the mains supply, determining a frequency correction value for adjusting the target drive frequency at which the electric motor of the machine is operated by weighting the deviation with a factor k, the factor k being specified dynamically as a function of at least one process variable of the drive load and/or of the operated drive process, and operating the machine at the adjusted target frequency.

Control method for machine with inverter-operated electric drive unit

A rotor for an electrical machine, in particular synchronous reluctance machine, is provided. The rotor is formed as a cylindrical structure having a magnetically soft element formed with an even number of salient magnetic poles openings for forming magnetic flux barriers. The openings are at least partially filled with a diamagnetic and/or paramagnetic medium and the diamagnetic and/or paramagnetic medium may axially and tangentially fix the magnetically soft element relative to the rotor. A method for producing such a rotor and apparatus using the rotor, including a reluctance motor, in particular a synchronous reluctance motor, that uses the rotor are provided.

Rotor and reluctance motor

The invention relates to a method for starting a variable-speed electric motor, wherein upon detection of locking of the motor shaft a positive torque is applied to the motor shaft, and wherein the positive torque is continuously modified with different frequencies to overcome the locking.

Method for starting a variable-speed electric motor

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Rheinzabern, Germany

Joachim Schullerer