Torque Pulsation Reduction in Three-Phase Doubly Fed Induction Machine for Wireless Energy Transfer Applications

Rotary assembly platforms are commonly used in the packaging industry. One of the problems that the designers have faced is how to transfer the power to the auxiliary actuators mounted on the rotating disk. This paper solves the problem above by adopting a direct drive three-phase wound-rotor induction machine that can independently control the rotor torque and the power flow delivered to the rotor loads. For this result, high-frequency harmonics are added to the air-gap magnetic field. In addition, the minimization of the torque pulsation of the machine is considered. Experimental results confirm the feasibility of the proposed solution.