Current and temperature measurement method for e.g. half-bridge circuit of three-phase converter, involves evaluating measured levels with parameters for compensating temperature and current dependence of actual measured value

摘要

The method involves respectively detecting current and temperature levels by sensor components of a power electronic circuit. The sensor components are selected in such a manner that their voltage-current-temperature characteristics are linearly independent from each other. A calibration of the measured levels takes place with different temperatures and current values by a calibration process. The measured levels are evaluated with parameters determined during the calibration process by an evaluation algorithm for compensating temperature and current dependence of an actual measured value. An independent claim is also included for a measuring device for current and temperature measurement in a power electronic circuit.