Desaturation magnetic field modulation motor

Abstract

The invention discloses a desaturation magnetic field modulation motor, and the motor comprises an inner stator core, an inner air gap, a rotor modulation ring, an outer air gap and an outer stator core which are sequentially distributed from inside to outside in the radial direction. The motor also comprises an excitation winding which is placed in an inner stator core groove, a magnetic steel which placed at an opening of the inner stator core groove, an armature winding which is placed in an outer stator core groove, and a cryostat which is used for wrapping the excitation winding, whereinthe inner stator core, the rotor modulation ring and the outer stator iron core are all made of ferromagnetic materials. The excitation winding and the armature winding are placed on the two stators respectively, rotary excitation, an electric brush and a slip ring are not needed, the maintenance cost of the motor is reduced, and the reliability of the structure is improved; meanwhile, the doublestators and the rotor modulation ring are made of ferromagnetic materials, so the torque density of the motor can be effectively improved, and the superconducting consumption is reduced; and the modular cryostat is adopted, so the equivalent air gap flux density can be effectively reduced, and the torque density of the motor is further improved.

Description

technical field [0001] The invention belongs to the field of superconducting electromagnetic devices, and more specifically relates to a desaturation magnetic field modulation motor. Background technique [0002] Nowadays, offshore wind energy as a clean and renewable energy is developing rapidly, and offshore wind farms have attracted more and more attention all over the world. With the development of wind power from land to sea, in order to improve power generation efficiency and reduce the cost of power generation per unit capacity, the capacity of a single unit is getting larger and larger, and 5MW wind power generation units have been put into operation. At present, 10MW or greater capacity is being developed internationally. Wind Turbines. Due to the high current-carrying capacity of HTS strips, HTS coils can generate higher magnetic flux densities compared with traditional copper windings and permanent magnets, so HTS wind turbines have high torque density , light w...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects and improvement needs of the prior art, the present invention provides a desaturated magnetic field modulation motor, the purpose of which is to solve the problem that the magnetic field generated by the superconducting excitation coil in the existing superconducting motor is very large, which leads to serious saturation of the stator teeth, thereby Technical issues hindering the improvement of motor torque density

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