Valeo Siemens Eautomotive Germany Gmbh

Valeo Eautomotive Germany Gmbh

Andreas Held

Hans-Georg Köpken

Andreas Walter

Markus Seilmeier

Hrishikesh Joshi

A temperature sensor () comprises an electrical circuit () including a thermistor () intended to be placed next to an object (); a temperature measurement module () configured for determining a measured temperature (T_M) of the thermistor () from a resistance of the thermistor (); and a command module () configured for providing a command (C) to the electrical circuit () for modifying the electrical circuit () in a way that changes a current (IT) flowing in the thermistor (). The temperature sensor () further comprises a thermal loss determination module () configured for determining a thermal loss (L) of the thermistor () from the thermistor measured temperature (T_M) and the command (C); and a temperature estimation module () configured for estimating a temperature (T_E) of the object () from the thermistor measured temperature (T_M) and from the thermal loss (L) of the thermistor (TH).

Temperature sensor

A method determines a correction value for a control device for an electric machine, which describes an angular difference between a position of a d-axis of the electric machine and an actual position of the d-axis. The correction value is determined in a rotating state of a rotor of the electric machine as a function of a d voltage value describing a d component of a stator voltage specified by the control device in the initial configuration, of a q voltage value describing a q component of the stator voltage specified by the control device in the initial configuration, of a flux value describing a magnetic flux of the rotor, a speed value describing the speed of the rotor in the rotating state, and of a calibration value describing a speed-dependent voltage error of the d component of the stator voltage.

Method for determining a correction value which describes an angular difference between an assumed and an actual position of a d-axis, control device and inverter

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Fürth, Germany

Andreas Held