Control system for induction motor

Details Control system for induction motor Control system for induction motor

1985-12-18

1988-10-25

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318805, H02P 540

Patent

active

047806583

ABSTRACT:
A control system for an induction motor includes a power presumption circuit for presuming an electric energy F.sub.o, which is associated with a reactive power generated in the induction motor, on the basis of the numerical constants including the secondary winding resistance, the actual primary current and the actual rotation speed or angle of the induction motor. The electric energy F.sub.o is used to compensate for the change of the numerical constants of the induction motor, which is caused by the change in temperature.

REFERENCES:
patent: 3824437 (1974-07-01), Blaschke
patent: 4330741 (1982-05-01), Nagase et al.
Abbondanti, A. "Method of Flux Control in Induction Motors Driven by Variable Frequency, Variable Voltage Supplies", PTO Mailroom Jul. 6, 1981.
Gerces, L. J., "Parameter Adaption for the Speed-Controlled Static AC Drive with a Squirrel-Cage Induction Motor", IEEE Transactions on Industry Applications, vol. 1A-16, No. 2 Mar./Apr. 1980 pp. 173-178.

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