Device for controlling the torque of an asynchronous electric mo

Details Device for controlling the torque of an asynchronous electric mo Device for controlling the torque of an asynchronous electric mo

1992-11-24

1994-05-31

Wysocki, Jonathan

Electricity: motive power systems

Constant motor current, load and/or torque control

318805, H02P 700

Patent

active

053172469

ABSTRACT:
A device controls the torque of an asynchronous electric motor by controlling the phase of the motor stator voltage relative to a motor flux on the basis of a set point for the quadrature component of the stator current in a frame of reference related to the flux in turn derived from the motor torque set point. The device includes a first difference detector for detecting any difference between the set point and the current value of the quadrature component and a first regulator operating on the basis of the difference to provide the phase value to be applied to the motor to reduce the difference.

REFERENCES:
patent: 4607206 (1986-08-01), Sember et al.
patent: 4724373 (1988-02-01), Lipo
patent: 4767976 (1988-08-01), Mutoh et al.
patent: 4800327 (1989-01-01), Fujioka et al.
patent: 4926105 (1990-05-01), Mischenko et al.
patent: 5010288 (1991-04-01), Poline
Automatisierungstechnische Praxis, vol. 29, No. 2, 1987, Munich, Germany, pp. 83-88; K. Klausecker et al: "Eine neue Generation digital geregelter Drehstrom-Hauptspindelantriebe".

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