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In this paper, we present a methodology for the design of the rotor flux observer for induction motors and its applications to fault detection. We start with the well-known α-β model of induction motors. We employ a change of coordinates to transform the fifth order α-β model to a third order model expressed in terms of complex differential equations. After that, an inverse transformation is used...
In this paper, we present a methodology for the design of a speed sensorless flux observer for induction motors using a behavioral model of the angular speed. We start by developing a reduced order model of the induction motor using complex differential equations. After that, we formulate a behavioral model whose data represents the angular speed of the physical model of the induction motor. This...
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