Rotor, separately excited synchronous machine and motor vehicle

A rotor of a separately excited synchronous machine, the rotor comprising:

• at least one rotor winding that, in operation, generates a rotor field;
• a secondary coil that, in operation, receives inductive energy from a primary coil;
• and
• an active converter that, in operation, rectifies an alternating current (AC) voltage induced in the secondary coil and provides a direct current (DC) voltage supplied to the rotor winding,
• wherein the active converter includes a potted assembly,
• wherein the potted assembly includes a first half-bridge and a second half-bridge,
• wherein the first half-bridge connects a first voltage input of the potted assembly via a first switching circuit of the first half-bridge to a first voltage output of the potted assembly,
• wherein the second half-bridge connects a second voltage input of the potted assembly via a second switching circuit of the second half-bridge to a second voltage output of the potted assembly,
• wherein the secondary coil is connected to the potted assembly via the first voltage input and the second voltage input, and
• wherein the rotor winding is connected to the potted assembly via the first and second voltage outputs.