Drive protection monitor for motor and amplifier

Details Drive protection monitor for motor and amplifier Drive protection monitor for motor and amplifier

1994-10-05

1997-02-04

Cosimano, Edward R.

Boots, shoes, and leggings

330146, H03F 321, H02H 700

Patent

active

056005750

ABSTRACT:
An apparatus for monitoring the temperature of an inaccessible portion of an electrical current carrying device that cannot be directly measured easily comprises circuits for establishing a reference temperature value in the vicinity of the current carrying device and measuring the power dissipated in the current carrying device, a digital computer having ports for inputting the reference temperature value, the power dissipated in the current carrying device, the thermal resistances and thermal time constants of the thermal model simulating the current carrying device to the reference temperature, and a program stored in the digital computer for continuously calculating a differential temperature based upon the power dissipation and thermal model and adding the reference temperature thereto.

REFERENCES:
patent: 3600650 (1971-08-01), Obenhaus et al.
patent: 3990020 (1976-11-01), Porter, III
patent: 4001649 (1977-02-01), Young
patent: 4547826 (1985-10-01), Premerlani
patent: 5225992 (1993-07-01), Kobari et al.

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