| Abstract |
This paper presents an integrated DC charger using a six-phase synchronous machine with two isolated neutrals. The synchronous motor provides isolation between the DC grid and the battery and does not require a separate transformer. Control techniques are developed which allow charging without generating electromechanical torque inside the machine. The concept is validated experimentally using a six-phase, wound field synchronous machine (WFSM), showing isolated DC charging with zero torque production. Simulation results using an equivalent permanent magnet synchronous machine (PMSM) model are provided, indicating the potential for this system as a means to achieve high-power, high-efficiency isolated DC charging. |
