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US 2026/0312468 A1Published application
Electric motor and control device
AssigneeFanuc Corporation
InventorYuusuke FUKUSHIMA
Life of this patent
Estimating the term…
Abstract
This electric motor comprises: a stator core; a first winding that is wound around the stator core and corresponds to a first phase; a second winding that is wound around the stator core and that corresponds to a second phase which is different from the first phase; a thermistor that is attached to the first winding; and a thermostat that is connected in series with the thermistor, and that is attached to the second winding.
Claims4
An electric motor comprising:
- a stator core;
- a first winding wire wound around the stator core and forming a first phase;
- a second winding wire wound around the stator core and forming a second phase different from the first phase;
- a thermistor attached to the first winding wire;
- and
- a thermostat connected in series to the thermistor and attached to the second winding wire.
3 more elements
A controller comprising:
- a detection unit configured to detect composite resistance between resistance of a thermistor wound around a stator core of an electric motor and attached to a first winding wire forming a first phase and resistance of a thermostat wound around the stator core, attached to a second winding wire forming a second phase different from the first phase, and connected in series to the thermistor;
- and
- an output unit configured to output an alarm when a value of the composite resistance detected by the detection unit becomes greater than or equal to a first reference value or less than or equal to a second reference value.
Dependencies are inferred from the claim text.