Abb Schweiz Ag

Abb Research Ltd.

Ulf Ahrend

Joerg Gebhardt

Paul Szasz

Pedro Rodriguez

Cajetan Pinto

Jörg Gebhardt

Rolf Disselnkötter

Michal Orkisz

James Ottewill

Maciej Orman

Wilhelm Daake

Andreas Decker

Guruprasad Sosale

Holger Kaul

Peter Ude

Pawel Rzeszucinski

Juergen Horstkotte

Francisco Mendoza

Jürgen Horstkotte

Paul Szász

Dirk Petrus Gijsbertus De Jager

John Beniston

Thomas Rodenbusch-Mohr

Jörn Kruse

Falk Zierach

Vladimir Maier

Francisco Mendoza Cervantes

A method for determining a temperature of a fluid flowing through a pipe section includes: determining a temperature of the pipe section; obtaining a reference temperature at a distance from a surface of the pipe section; determining a heat transfer behaviour, in particular a thermal resistance, of a boundary layer of the fluid on an inner wall of the pipe section based on at least one material property and/or at least one value of a state variable of the fluid; and determining the temperature of the fluid based on the heat transfer behaviour of the boundary layer, a heat transfer behavior, in particular a thermal resistance, of the pipe section, the temperature of the pipe section, and the reference temperature.

Method for non-intrusively determining the temperature of a fluid flowing through a conduit portion

A method for identifying a fault condition in an electrical machine in which at least a stator or a rotor has parallel winding branches is disclosed. A measurement is carried out for obtaining a set of circulating current values between two parallel winding branches of which each winding branch includes a single coil. A frequency analysis is applied on the set of circulating current values to obtain at least one frequency component. A fault condition of the electrical machine is determined on the basis of the at least one frequency component.

Method for detecting a fault condition in an electrical machine

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Karlsruhe, Germany

Ulf Ahrend