A fully superconducting magnetic gear motor and its application

Abstract

The invention discloses a magnetic gear motor. The magnetic gear motor comprises a stator iron core, an inner rotor iron core, a low temperature Dewau insulation wall and an outer rotor iron core, wherein the stator iron core, the inner rotor iron core, the low temperature Dewau insulation wall and the outer rotor iron core are coaxial successively sleeved from the inside out. A number of permanent magnets are circumferentially arranged on the inner wall of the outer rotor iron core. A number of magnetic modulation rings are fixedly circumferentially arranged on the outer peripheral surface, which is opposite to the permanent magnets, of the low temperature Dewau insulation wall. The inner rotor iron core is provided with an excitation winding. An armature winding is arranged on the outer peripheral surface of the stator iron core. The magnetic modulation rings can realize magnetic field modulation, so that the permanent magnet magnetic field and the magnetic field generated by the excitation winding are in interaction. The outer rotor iron core drives the inner rotor iron core to rotate, or the inner rotor iron core drives the outer rotor iron core to rotate. The armature winding in the stator iron core generates induced electromotive force, or the energy of the armature winding drives the outer rotor iron core to rotate to realize energy conversion. According to the magnetic gear motor provided by the invention, the magnetic gear structure is introduced into a full superconducting motor; the torque density is increased; rotation leakage is avoided; and the power density and the reliability are improved.

Description

technical field [0001] The invention belongs to the field of superconducting electromagnetic devices, and in particular relates to a fully superconducting magnetic gear motor and its application. technical background [0002] Due to the high current-carrying and zero-resistance characteristics of superconducting materials, superconducting windings can significantly improve the working characteristics of motors. A superconducting motor is a motor using superconducting windings, which can be applied to superconducting wires only on DC excitation windings, or superconducting wires can be applied to both DC excitation windings and AC armature windings. However, superconducting wires will produce AC loss under alternating electromagnetic conditions, which increases cooling costs and reduces the feasibility of superconducting motors. Therefore, most superconducting generators are semi-superconducting motors that only use superconducting wires on the DC excitation winding. With t...

AI Technical Summary

Problems solved by technology

However, there are still some technical difficulties in the current full superconducting motor: firstly, the independent low-temperature cooling container of the stator and rotor will further increase the equivalent air gap, which limits the power density; secondly, the heat leakage of the rotating seal still exists, reducing the overall motor system efficiency

Images