Abb Schweiz Ag

Abb Technology Ag

Halina Burzanowska

Christian Stulz

Pieder Jörg

Petri Schroderus

Petteri Ämmälä

Petteri Sario

A method is provided for compensating the flux drift caused by measurement and/or calculation errors when controlling a rotating electrical machine. The flux drift of the estimated flux vector may be compensated for by comparing the length of the flux vector with a reference flux magnitude which already has been determined for controlling the inverter. Depending on the comparison, the length of the estimated flux vector may be lengthened or shortened.

Flux offset compensation for a rotating electrical machine

A method and apparatus are provided for operation of a three-phase rotating electrical machine which has at least two stator winding sets and each stator winding set has three phase windings connected in star, and the star circuits of the stator winding sets have a phase shift of 30 degrees electrical with respect to one another, and an associated converting unit is respectively provided for each stator winding set, in which method the respective stator winding set is fed by the associated converter unit, and a respectively associated regulation device is provided for each converter unit, and each converter unit is driven by means of a drive signal from the associated regulation device independently of regulation devices of the respective other converter units.

Method for operation of a three-phase rotating electrical machine, and an apparatus for carrying out the method

A method is specified for operating a rotating electrical machine (), which machine () has at least two sets of stator windings (A, B), in each case one associated converter unit () being provided for each set of stator windings (A, B) and each set of stator windings (A, B) comprising n phase windings, where n&#x2267;3, in which method the respective set of stator windings (A, B) is fed by the associated converter unit (). In order to make it possible to regulate or influence electrical variables of the individual sets of stator windings of the rotating electrical machine in redundant fashion and independently, the currents (i, i, i; i, i, i) of at least n&#x2212;1 phase windings of each set of stator windings (A, B) are measured, and in each case one associated regulating device () is provided for each converter unit () and each converter unit () is driven by means of a drive signal (S) of the associated regulating device () independently of regulating devices () of the respective other converter units (). In addition, the drive signal (S) is formed in the respective regulating device () from the measured currents (i, i, i; i, i, i) of each set of stator windings (A, B). Furthermore, an apparatus is specified for carrying out the method.

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Untersiggenthal, Switzerland

Halina Burzanowska