Control circuit for induction motor

Details Control circuit for induction motor Control circuit for induction motor

1992-09-11

1994-01-11

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318809, 388906, H02P 540

Patent

active

052784851

ABSTRACT:
A control circuit for an induction motor calculates the d-axis current and q-axis current of a rotor in the motor and estimates the variation of the flux and resistance of the rotor on the basis of the d-q axis currents. As a result, a three-phase current for compensating for the resistance of the rotor varied due to the temperature and environment is suitably controlled to obtain high-performance of the motor.

REFERENCES:
patent: 4023083 (1977-05-01), Plunkett
patent: 4215305 (1980-07-01), D'Atre et al.
patent: 4310791 (1982-01-01), Akamatsu
patent: 4456868 (1984-06-01), Yamamura et al.
patent: 4469997 (1984-09-01), Curtiss et al.
patent: 4617675 (1986-10-01), Ashikaga et al.
patent: 4751447 (1988-06-01), Okachi
patent: 4885520 (1989-12-01), Sugimoto et al.
patent: 4967135 (1990-10-01), Ashikaga et al.

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