Offshore type superconducting wind power generator

Abstract

The invention relates to an offshore type superconducting wind power generator which is suitable for offshore areas. The offshore type superconducting wind power generator comprises a stator system, a rotor system and a cooling system, wherein a rotor coil subassembly of the rotor system comprises a magnet framework, high-temperature superconducting coils and a coil fastening piece; the magnet framework is in an annular runway shape and the hollow part of the magnet framework is a refrigeration medium flow channel; an annular groove is arranged on the side face of the magnet framework and double layers of the high-temperature superconducting coils are wound through the groove and the outer parts of the high-temperature superconducting coils are provided with the coil fastening piece for preventing the high-temperature superconducting coils from being loosened outwards; meanwhile, one end of the coil fastening piece is provided with a current lead wire connector so as to enable the coil fastening piece to conveniently penetrate through a high-temperature superconducting current lead wire; and the cooling system is used for cooling the rotor system to realize the closed loop cooling work. The offshore type superconducting wind power generator provided by the invention has the advantages of high single-machine capacity, small volume and light weight, namely high power density; a rotor coil of the rotor system is made of the high-temperature superconducting material so that the rotor coil does not have resistance heating loss and the efficiency of a motor is high.

Description

technical field [0001] The invention relates to a superconducting wind-driven generator suitable for offshore, in particular to an offshore superconducting wind-driven generator whose rotor is composed of high-temperature superconducting magnets and whose stator is composed of conventional copper coils. Background technique [0002] Due to the limitation of its electromechanical performance, traditional wind turbines will encounter many technical obstacles in the process of expanding their stand-alone capacity. Due to the harsh environment, difficult maintenance and high cost of offshore wind power, extremely high requirements are placed on the stability of wind turbines. [0003] For wind turbines, the gearbox has the highest failure rate. The components in the gearbox are prone to wear and tear as the fan rotates at high speed for many years; at the same time, it increases the mechanical load and friction loss of the entire fan system, thereby greatly increasing the maint...

AI Technical Summary

Problems solved by technology

The number of poles of the traditional direct drive unit is very large, usually more than 80 poles, and the volume and weight are very large, and the permanent magnet components of the permanent magnet direct drive unit have long-term impact vibration and magnetic stability problems under the conditions of large-scale temperature changes

At the same time, the permanent magnet is limited by the existing material technology, and it is difficult to further increase the surface magnetic field, which restricts the increase of the capacity of a single machine

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