Verfahren zum drehgeberlosen, feldorientierten 4-Quadranten-Betrieb einer Asynchronmaschine

摘要

Actual rotational speed of the rotor is compared with target value, in speed controller (1) which outputs torque consisting of desired value of current component. Based on output torque, the actual torque is controlled by adjusting rotating field frequency to zero or to near zero or changing the supply voltage.