CONTROL DEVICE FOR AN ASYNCHRONOUS MACHINE AND METHOD FOR OPERATING AN ASYNCHRONOUS MACHINE

摘要

The present invention provides a method and a device to determine the rotor field angle of an asynchronous machine even during the magnetising phase, in which the rotor field of a rotor of the asynchronous machine is built up. The asynchronous machine can then be actuated in a controlled operating mode even during the magnetising phase. The startup properties of the asynchronous machine can thus be improved, the magnetising phase of the asynchronous machine is shortened and it is possible to set a desired torque even during the magnetising phase.