Field weakening induction drive

Details Field weakening induction drive Field weakening induction drive

1986-03-13

1987-06-30

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318805, H02P 540

Patent

active

046773606

ABSTRACT:
A speed control using decoupled flux and torque commands obtains constant horsepower operation by modifying the slip according to the torque requirements. The slip is modified by a value representative of the torque producing current. Control is kept in the torque command and the slip command with the field producing command free to change according to the motor speed, voltage available and the rotor time constant.

REFERENCES:
patent: 4310791 (1982-01-01), Akamatsu
patent: 4338559 (1982-07-01), Blaschke et al.
patent: 4484128 (1984-11-01), Jotten et al.

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