PWM motor drive with torque determination

Details PWM motor drive with torque determination PWM motor drive with torque determination

1985-10-09

1986-07-22

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318798, 318806, H02D 540

Patent

active

046022015

ABSTRACT:
A pulse-width-modulated motor drive includes means for the derivation of a signal representative of the torque by sensing the DC-link current directly, or indirectly, and by dividing the sensed signal by the modulation index of the motor drive to obtain proportionality through the duty-cycle long range succession.

REFERENCES:
patent: 4158163 (1979-06-01), Eriksen et al.
patent: 4521840 (1985-06-01), Hoadley

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