Lust Antriebstechnik Gmbh

Sulzer Electronics Ag

Levitronix Gmbh

Other

Abb Management Ag

Sulzer Electroncis Ag

Reto Theodor Schob

Thomas Gempp

Christian Gerster

Natale Barletta

A magnetically journalled rotational arrangement includes a substantially disc-shaped or ring-shaped rotor and a stator. The stator includes structure for the production of a field which produces a rotation of the rotor. The rotor has structure which produce a unipolar bias magnetization flux which is spatially modulated when viewed in the circumferential direction.

Magnetically journalled rotational arrangement including a rotor for generating a unipolar bias magnetic flux

An electrical rotary drive, designed as a bearingless motor, has a magnetically journalled rotor ( ) and a stator ( ) which comprises a drive winding ( ) having at least two loops ( ) for producing a magnetic drive field which produces a torque on the rotor ( ), and has a control winding ( ) having at least three loops ( ) for producing a magnetic control field by means of which the position of the rotor ( ) with respect to the stator ( ) can be regulated, with each loop ( ) of the drive winding ( ) belonging to a different electrical drive phase and each loop ( ) of the control winding ( ) belonging to a different electrical control phase, and having a setting device ( ) which supplies each loop ( ) of the drive winding ( ) and each loop ( ) of the control winding ( ) with a phase current or a phase voltage as a setting parameter, with the setting device ( ) being designed in such a manner that the setting parameter for each loop ( ) of the drive winding ( ) and for each loop ( ) of the control winding ( ) can be regulated independently of the setting parameters for the other loops.

Electrical rotary drive

In a method for the determination of the radial position of a permanent magnetic rotor (,) in an electromagnetic rotary drive which is designed as a bearing-free motor with a stator (,) and the magnetically journalled rotor (,) the magnetic flux which is produced by the rotor (,) is determined by means of sensors (LS,, LS,, LS,) in the space between the rotor (,) and the stator (,) at least at two different measurement locations. The radial position of the rotor (,) is established with the help of the magnetic flux which is determined at the measurement locations and with the help of the magnetic flux which results at the measurement locations when the rotor (,) is arranged so as to be centered. Furthermore, a sensor arrangement for the determination of the radial position of the permanent magnetic rotor is proposed.

Method and sensor arrangement for the determination of the radial position of a permanent magnetic rotor

Magnetic bearing apparatus and a method for operating the same

Rotary pump and process to operate it

Gap tube motor

The arrangement or apparatus for operating a magnetically suspended, electromotoric drive apparatus in the event of a mains disturbance comprises a drive converter feeding the drive apparatus, a driver feeding a magnetic bearing and a voltage converter, which are connected to a common intermediate circuit. The voltage converter feeds a stopping control apparatus and the drive converter can be switched to a regeneratively acting mode of operation by the stopping control apparatus in the event of a mains disturbance in order to provide at least the driver feeding the magnetic bearing and the stopping control apparatus with electrical energy via the intermediate circuit.

Arrangement and method for operating a magnetically suspended,

Method for compensation of periodic shaking forces in an electrical

Method and control apparatus for controlling an AC-machine

A method and a device for driving a series circuit of power semicondutor switches (2) are specified. In this case, the voltage loading of the individual switches of the series circuit is balanced by providing that the voltage (Uce1 . . . Ucen) across each switch of the series circuit is measured as the controlled variable, and that this measured voltage is used to vary the switching instants in such a way that the voltage loading during switching is essentially equal for all the switches. In addition, the level of the control voltage (Ugeoff1 . . . Ugeoffn) in the blocking state can be influenced with the aid of the measured voltage in such a way that the blocking voltages of the switches are essentially equal. The advantage of the invention is to be seen in that the voltage loading of the individual semiconductors can be balanced not only during switching, but also in the blocking state. In addition, the control also balances influences of parameter differences and parameter changes, as well as influences of the circuit. As a result, the switches can be optimally utilized in terms both of power and of frequency.

Electronic power converter circuit arrangement and method for driving

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Volketswil, Switzerland

Reto Theodor Schob