Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1996-05-06
1997-09-16
Ro, Bentsu
Electricity: motive power systems
Induction motor systems
Primary circuit control
318804, H02P 736
Patent
active
056684592
ABSTRACT:
An improved apparatus for generating a magnetic flux of an induction motor, which is capable of more accurately generating a magnetic flux by operating a rotational coordinate system-based current and a phase of a magnetic flux for generating a reference magnetic flux, compensating a magnetic error value which is referred to a difference value between a reference magnetic flux and a really generated magnetic flux, which includes a stator magnetic flux generator for outputting a stator magnetic flux by operating a current of an inputted static coordinate system, a voltage of a static coordinate system, and a compensation voltage; a rotor magnetic flux generator for outputting a rotor magnetic flux by operating a current of a static coordinate system inputted to the stator magnetic flux generator and a stator magnetic flux outputted to the stator magnetic flux generator; a reference magnetic flux generator for outputting a reference magnetic flux by operating a current of an inputted rotational coordinate system and a phase of a magnetic flux; and a compensation voltage generator for generating a compensation voltage so as to compensate a magnetic flux error value which is referred to a difference value between a reference magnetic flux outputted from the reference magnetic flux generator and a rotator magnetic flux outputted form the rotor magnetic flux generator, and then for outputting to the stator magnetic flux generator.
REFERENCES:
patent: 4044285 (1977-08-01), Plunkett et al.
patent: 4418308 (1983-11-01), Bose
patent: 4453116 (1984-06-01), Bose
LG Industrial Systems Co. Ltd.
Ro Bentsu
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