Induction motor slip control

Details Induction motor slip control Induction motor slip control

1983-12-30

1985-09-24

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318811, H02P 540

Patent

active

045435200

ABSTRACT:
A variable frequency AC induction motor servo control system wherein slip is generated as a function of stator current. In a preferred embodiment the slip per ampere ratio is constant in the range from zero to approximately base speed and thereafter increases exponentially as the rotor speed increases above base speed.

REFERENCES:
patent: 3477002 (1969-11-01), Campbell
patent: 3899725 (1975-08-01), Plunkett
patent: 3983463 (1976-09-01), Nabae et al.
patent: 4263542 (1981-04-01), Schulze et al.
patent: 4281276 (1981-07-01), Cutler et al.
patent: 4377779 (1983-03-01), Plunkett
patent: 4456868 (1984-06-01), Yamamura et al.
patent: 4459534 (1984-07-01), Nagase et al.

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