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

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

1981-08-13

1984-05-08

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318805, 318808, H02P 540

Patent

active

044477872

ABSTRACT:
Disclosed is an apparatus for operating a converted-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 convertor rectifier respectively, 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.

REFERENCES:
patent: 3593083 (1971-07-01), Blaschke
patent: 3909687 (1975-09-01), Abbondanti
patent: 3909688 (1975-09-01), Blaschke et al.
patent: 4258302 (1981-03-01), Plunkett
patent: 4388577 (1983-06-01), Blaschke et al.

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