Dual-stator structure type high temperature superconducting permanent magnet wind driven generator

Abstract

The invention discloses a dual-stator structure type high temperature superconducting permanent magnet wind driven generator. In the housing, the rotor is a hollow cup-shaped rotor, the bottom portion of the rotor is fixedly connected with a spindle, permanent magnets are attached and distributed uniformly and separately on inner and outer walls of the rotor in the circumferential direction; inner and outer stators are arranged inside and outside the rotor in the circumferential direction separately, an air gap exists between the inner and the outer stators and the permanent magnets on the inner and outer walls of the rotor; outer stator grooves are distributed uniformly and separately on the inner side of the outer stator in the circumferential direction, a first superconducting armature winding is wound on two adjacent outer stator grooves; inner stator grooves are distributed uniformly and separately on the outer side of the inner stator in the circumferential direction, a second superconducting armature winding is wound on two adjacent inner stator grooves, and the first and second superconducting armature windings are sealed through first and second cooling devices separately. The wind driven generator of the invention adopts the dual-stator structure, so the rotary sealing problem with cooling liquid does not exist, advantages of simple and reliable structure, less loss and high power density can be realized, and the wind driven generator is suitable for direct drive type low-speed wind turbine generator systems.

Description

technical field [0001] The invention relates to a high-temperature superconducting permanent magnet motor with a double-stator structure, in particular to a high-temperature superconducting permanent-magnet wind power generator with a double-stator structure. Background technique [0002] The stand-alone capacity of wind turbines has reached the megawatt level, and the volume and weight of generators have also increased, which will increase the installation and maintenance costs of motors. The development of superconducting technology is expected to solve these problems. Superconducting motors have the advantages of high power density, low loss, and high efficiency, and can effectively reduce the volume and weight of the motor. Although the superconducting wire has no loss when it is connected to direct current, it will produce loss when it is connected to alternating current. Therefore, the DC excitation winding of a traditional superconducting motor is a superconductor, wh...

AI Technical Summary

Problems solved by technology

However, the DC excitation winding is located on the rotor, which is a rotating part, which will make it difficult to seal the coolant when it is rotating, which is an unreliable factor

Images