Stator structure and supercritical carbon dioxide high-speed permanent magnet synchronous motor

Abstract

The invention provides a stator structure and a supercritical carbon dioxide high-speed permanent magnet synchronous motor, the stator structure comprises a motor rotor, the motor rotor is sleeved with a motor stator, the motor stator is provided with a plurality of closed grooves uniformly distributed along the circumferential direction of the motor stator, and each closed groove is internally provided with a motor winding; a slot of a motor stator is designed into a closed notch structure, and a cover is designed to weaken flux density distortion caused by a cogging effect occurring at a stator notch of an existing supercritical carbon dioxide high-speed permanent magnet synchronous motor, the height of the notch is too high, and alternating loss caused by a cogging opening is weakened, so that air gap flux density harmonic waves and cogging torque are effectively reduced; the composite sleeve of stainless steel and a carbon fiber layer is adopted, so that the surface heat dissipation capability of the rotor is effectively improved, the eddy current loss of the rotor is weakened, and the demagnetization problem caused by excessive temperature rise of the permanent magnet is avoided.