An apparatus and corresponding systems and methods for managing electric power, particularly a transformer system and method, and more specifically a transformer for transforming direct current to alternating current. An example apparatus includes a chamber configured to contain plasma. The apparatus includes input electrodes disposed at least partially within the chamber, and configured to receive direct current input into the chamber. The input electrodes are configured to cause the input direct current to induce motion in the plasma. Motion induced in the plasma transforms current flowing there-through. Output electrodes extend from the chamber, which output electrodes may rotated in a controlled manner. The output electrodes conduct a three or one phase alternating current, from the induced motion in the plasma, for delivery from the chamber.