Generalized real-time thermal model

Details Generalized real-time thermal model Generalized real-time thermal model

1983-11-30

1985-10-15

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

361 27, 361103, 364483, 364557, H02H 708

Patent

active

045478260

ABSTRACT:
A generalized real-time thermal model of an induction motor produces values indicative of the transient and steady state temperature condition of the motor. Each of these values is compared with respective predetermined limits and power to the motor is removed when any value exceeds its respective limit in order to prevent damage to the motor.

REFERENCES:
patent: 3573555 (1971-04-01), Lipnitz
patent: 4000410 (1976-12-01), Hentschel et al.
patent: 4286303 (1981-08-01), Grenheimer et al.
patent: 4319298 (1982-03-01), Davis et al.
patent: 4434390 (1984-02-01), Elms
D. R. Boothman et al., "Thermal Tracking--A Rational Approach to Motor Protection", IEEE Technical Paper T 74 029-5 inclusive.
Motor Command by Westinghouse.
F. Shirzadi, "Electronics Improve Motor Protection", Design News, Jun. 6, 1983, pp. 135-138.

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