Motor temperature sensor system and method to determine...

Details Motor temperature sensor system and method to determine... Motor temperature sensor system and method to determine...

2007-01-23

2007-01-23

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S434000, C318S634000, C318S641000, C318S431000, C318S708000, C318S738000, C318S471000, C318S291000, C310S315000, C310S016000, C310S06800R, C388S934000

Reexamination Certificate

active

11144826

ABSTRACT:
An electric motor system includes an electric motor, a temperature sensor mounted therein capable of measuring a local temperature and generating a temperature related signal, and a processor configured to calculate an actual temperature of a rotor magnet from the temperature related signal, and an actual output torque from the actual rotor magnet temperature. A method for determining the actual output torque of a motor includes sensing a temperature within the motor, calculating a rotor magnet temperature from the sensed temperature, and calculating the actual output mechanical torciue from the rotor magnet temperature.

REFERENCES:
patent: 5612605 (1997-03-01), Tao
patent: 5650700 (1997-07-01), Mutoh et al.
patent: 6205405 (2001-03-01), Pouvreau
patent: 6529135 (2003-03-01), Bowers et al.
patent: 6548981 (2003-04-01), Ishii et al.

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