Thoratec Corporation

Levitronix Gmbh

Lust Antriebstechnik Gmbh

Sulzer Electronics Ag

Thomas Gempp

Reto Theodor Schob

Reto Schöb

Natale Barletta

Andreas Fleischli

Christian Gerster

Mathias Hoffmann

Giampiero Foiera

Thomas Eberle

A flow rate of a fluid in a flow system is determined based on one or more parameters of the flow system, the parameters not including the flow rate itself. The flow rate is also measured with a calibration sensor, and the measured flow rate is used to calibrate how the flow rate is determined.

Method for the calibration of a flow measurement in a flow system, and flow system for carrying out the method

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

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,

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Z{overscore (u)}rich, Switzerland

Thomas Gempp