Regulating the torque of an induction motor

Details Regulating the torque of an induction motor Regulating the torque of an induction motor

1975-01-02

1977-01-04

Rubinson, Gene Z.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318230, 318231, H02P 540

Patent

active

040016609

ABSTRACT:
A motor control circuit and method for regulating the torque of an ac induction motor operated at a variable frequency utilizes as a controlled variable the modified in-phase component of stator current which is compensated for the voltage drop across the stator resistance. Both positive and negative torque are approximately linear assuming the slip frequency is changed linearly, and only the per phase line current and voltage are sensed. A traction application is described.

REFERENCES:
patent: 3500158 (1970-03-01), Landau et al.
patent: 3512067 (1970-05-01), Landau
patent: 3619749 (1971-11-01), Scheiman
patent: 3824437 (1974-07-01), Blaschke
patent: 3909687 (1975-09-01), Abbondanti

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