EXPERIMENTAL EVALUATION OF A ROTOR FLUX ORIENTED CONTROL ALGORITHM FOR BRUSHLESS DOUBLY-FED MACHINES

The brushless doubly-fed machine (BDFM) has shown potential for adjust able speed drive applications, Although the BDFM is readily applicable for industrial drives requiring only slow speed response, control met hods for higher performance operation need to be explored, With the he lp of a suitable synchronous reference frame dq model, this paper defi nes a BDFM synchronous angle and employs an electric torque estimator to establish a rotor flux oriented control algorithm, Experimental res ults show the effectiveness of the proposed controller.