| Abstract |
A new method for rotor flux orientation in a speed sensorless induction motor drive has
been proposed recently. The method adopts the simple space vector motor model from the
fundamental-wave realm, but yet applies a low-frequency signal injection. Driving the response from
the mechanical system to zero makes it possible to reach zero stator frequency operation. The original
derivation of the method includes various assumptions regarding the controller, the motor and the
mechanical load. In this paper, the effect of these assumptions and the applicability of the method are
studied. In addition, the range of applicable controller parameter settings is investigated in
experiments, where a simplified version of the controller is used. |
