| 摘要 |
The invention relates to a method and a device for controlling a synchronous machine which has a stator, a rotor and magnets disposed on the rotor. When the synchronous machine (S1) has been produced or serviced, a nominal value ?nenn is first set (S2) for the magnetic flux prevailing in the synchronous machine and a control system is flagged to indicate that no calibration has been carried out yet (S3). Tests are then performed repeatedly in order to check whether the synchronous machine has not been operated for at least a predetermined period of time (S4). If it has not, it is assumed that there is temperature balance between the stator and the rotor, such that the temperature to be measured at the stator is the same as the rotor temperature and can thus be used as a basis for calibration of the magnetic flux ?kalib (S5). The control system is then flagged, to indicate that the flux has been calibrated (S6). Normal operation can then continue (S7), checks being carried out continually to see whether the flux has already been calibrated (S8). |
