Method and apparatus for stabilizing the locus of a vector forme

Details Method and apparatus for stabilizing the locus of a vector forme Method and apparatus for stabilizing the locus of a vector forme

1985-05-10

1986-12-16

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

324158MG, H02P 540

Patent

active

046299610

ABSTRACT:
In order to determine from a reference vector (for instance from the EMF vector e.sub.s of a rotating field machine given by the current i.sub.s and the voltage u.sub.s) a model vector by integration (for instance the flux vector) and to thereby suppress defects of technical integrators and instabilities of the circuit used, a correction vector is formed which is rotated relative to the model vector (angle .epsilon..sub..phi.) and of which the magnitude is proportional to the derivative of the vector magnitude, or proportional to another volatile quantity. The model vector itself is obtained by integration of the sum vector formed by the reference vector and correction vector. This "voltage model" can optionally be controlled by a reference vector.

REFERENCES:
patent: 3593083 (1971-07-01), Blaschke
patent: 4282473 (1981-08-01), Dreiseitl et al.
patent: 4388577 (1983-06-01), Blaschke et al.
patent: 4423367 (1983-12-01), Blaschke et al.

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