Three-phase/two-phase rotary transformer

A three-phase/two-phase rotary transformer comprising:

• a three-phase portion and a two-phase portion that are movable in rotation relative to each other about an axis A;
• the three-phase portion comprising a first body made of ferromagnetic material and three-phase coils, the two-phase portion comprising a second body made of ferromagnetic material and two-phase coils;
• the second body defining a first annular slot of axis A and a second annular slot of axis A, the first slot being defined by a first side leg, a central leg, and a ring, the second slot being defined by the central leg, a second side leg, and the ring;
• and
• the two-phase coils comprising a first toroidal coil of axis A in the first slot, a second toroidal coil of axis A in the first slot, a third toroidal coil of axis A in the second slot, and a fourth toroidal coil of axis A in the second slot, the first coil and the second coil being connected in series, the second coil and the third coil being connected in series;
• wherein given winding directions and connection directions of the coils, a current flowing in the first coil and the fourth coil corresponds, for the first coil, to a first magnetic potential and, for the fourth coil, to a second magnetic potential opposite to the first magnetic potential, and a current flowing in the second coil and in the third coil corresponds, for the second coil, to a third magnetic potential and, for the third coil, to a fourth magnetic potential opposite to the second magnetic potential.