Device for the field-oriented operation of a converter-fed...

Details Device for the field-oriented operation of a converter-fed... Device for the field-oriented operation of a converter-fed...

H - Electricity

02

P

318/108

H02P 21/14 (2006.01)

Patent

CA 1186727

ABSTRACT OF THE DISCLOSURE Disclosed is an apparatus for operating a converter-fed asynchronous electric motor which comprises a flux computer for determining the position of the flux vector from the input values for the stator voltage provided by said motor by solving all the electrical quantities of the Park equations describing said motor in a given position of the rotor axis, taking into account the parameter values corresponding to the rotor resistance and the stator resistance of said motor whereby signals corresponding to the position of the flux vector and belonging to a solution, can be tapped from said flux computer; a converter control unit coupled to said flux computer and said converter rectifier re- spectivley, forming the control quantities for driving the converter rectifier from the determined position of the flux vector and from the nominal input values which fix the components of the stator current vector parallel and perpendicular to the flux vector.

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