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...

2005-06-07

2005-06-07

Martin, David (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S641000, C318S471000

Reexamination Certificate

active

06903525

ABSTRACT:
A method and apparatus is herein disclosed for determining the motor performance of an electric motor through monitoring the temperature of rotor magnets. The temperature is determined by initially heating the rotor magnets to two known temperatures and subsequently recording the temperature at each known temperature. From the known and recorded temperatures, an offset, if any, is calculated. An actual temperature is then determined from the subsequent temperatures of the magnets and the offset. The actual temperature is then used as a basis to determine the motor performance.

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