The invention relates to a method for checking the plausibility of a temperature measurement of a temperature sensor (4) on a component (21, 22) of an electrical machine (2) in a technical device (1), comprising the following steps: monitoring (S1) a current in the electrical machine (2); upon detecting a steady-state load operation, providing (S4) a first temperature measured value of a temperature of the component (21, 22) of the electrical machine (2), the duration of the steady-state load operation, and an ambient temperature; detecting (S7) a second temperature measured value at an end of the steady-state load operation; determining (S8) a modelled temperature value (T.sub.mod) using a data-based temperature model as a function of the first temperature measured value, the duration, and the ambient temperature, wherein the temperature model is trained to assign the first temperature measured value, the duration, and the ambient temperature to a modelled temperature value (T.sub.mod); checking the plausibility (S9) of the second temperature measured value with the modelled temperature value.

The invention relates to a method for checking the plausibility of a temperature measurement of a temperature sensor (4) on a component (21, 22) of an electrical machine (2) in a technical device (1), comprising the following steps: monitoring (S1) a current in the electrical machine (2); upon detecting a steady-state load operation, providing (S4) a first temperature measured value of a temperature of the component (21, 22) of the electrical machine (2), the duration of the steady-state load operation, and an ambient temperature; detecting (S7) a second temperature measured value at an end of the steady-state load operation; determining (S8) a modelled temperature value (T.sub.mod) using a data-based temperature model as a function of the first temperature measured value, the duration, and the ambient temperature, wherein the temperature model is trained to assign the first temperature measured value, the duration, and the ambient temperature to a modelled temperature value (T.sub.mod); checking the plausibility (S9) of the second temperature measured value with the modelled temperature value.

A method of calibrating temperature of a resistive element includes: generating a standard resistance-temperature (R-T) curve for the resistive element in an isothermal condition, wherein the resistive element comprises a material with a Curie temperature; generating an operational R-T curve for the resistive element during a normal operation of the resistive element; shifting the operational R-T curve toward the standard R-T curve at the Curie temperature to generate an adjusted operational R-T curve; and adjusting a measured temperature of the resistive element based on a resistance of the resistive element and the adjusted operational R-T curve.

A method of calibrating temperature of a resistive element includes: generating a standard resistance-temperature (R-T) curve for the resistive element in an isothermal condition, wherein the resistive element comprises a material with a Curie temperature; generating an operational R-T curve for the resistive element during a normal operation of the resistive element; shifting the operational R-T curve toward the standard R-T curve at the Curie temperature to generate an adjusted operational R-T curve; and adjusting a measured temperature of the resistive element based on a resistance of the resistive element and the adjusted operational R-T curve.