Control of a Direct Drive Five-Phase Wound-Rotor Induction Machine for Rotary Platforms in Automation Applications

The use of rotary assembly platforms, such as the automated box-fill system rotary table, is widespread in automation applications. One of the problems that the designers have to face is how to transfer the power to the auxiliary actuators mounted on the rotating platform. In this paper, this problem is solved by adopting a direct drive wound-rotor five-phase machine that can independently control the rotor torque and the power flow delivered to the rotor loads. Some simulation results are shown to confirm the effectiveness of this multiphase electric drive.