Built-in large double-stator permanent magnet direct-driven wind power generator

Abstract

The invention relates to a built-in large double-stator permanent magnet direct-driven wind power generator, which comprises a wheel hub consisting of a wheel hub front half part and a wheel hub rear half part; one end of a motor rotor is fixed on the wheel hub front half part; the wheel hub is supported on a hollow shaft through a front bearing and a rear bearing; the front bearing is arranged and compacted at the front part of the hollow shaft by a front bearing locking nut and a front shaft sleeve are; the front end of the inner ring of the rear bearing is fastened on the hollow shaft by a locking nut and a rear shaft sleeve; a bearing mounting flange of the wheel hub is provided with a variable-blade bearing through a circle of bolts; a blade is arranged on the inner ring of the variable-blade bearing; a front bearing cover is arranged on the front end face of a bearing pedestal of the wheel hub front half part; a rear bearing cover is fastened on the end face of a rear bearing pedestal of the wheel hub rear half part; an inner stator and an outer stator of the power generator are fastened on the hollow shaft through a stator bracket; the hollow shaft and a stand are fastened together; the opened end of the outer stator is provided with an outer stator centering bearing; and the opened end of the motor rotor is provided with a rotor centering bearing. The built-in large double-stator permanent magnet direct-driven wind power generator has the advantage that: the whole volume is reduced, so the weight and the cost of the whole device are reduced. The built-in large double-stator permanent magnet direct-driven wind power generator can be widely applied to wind power generation systems.

Description

technical field [0001] The invention relates to a large-scale permanent magnet direct-drive wind generator, in particular to a built-in large-scale double-stator permanent-magnet direct-drive wind generator in which the generator is arranged inside the fan hub. Background technique [0002] As the power of the motor increases, the volume of the motor will become larger and larger. Especially for low-speed motors, such as permanent magnet direct-drive wind turbines, when the power is greater than megawatt or more than several megawatts, the volume will become quite large, which will bring great difficulties to transportation. SUMMARY OF THE INVENTION [0003] In view of the above problems, the purpose of the present invention is to provide a built-in large-scale double-stator permanent magnet direct-drive wind generator with small size, which can reduce the weight of the whole machine and greatly reduce the cost of the whole machine. [0004] In order to achieve the above-...

AI Technical Summary

Problems solved by technology

Especially for low-speed motors, such as permanent magnet direct-drive wind turbines, when the power is greater than megawatts or more than several megawatts, their volume will become quite large, which will bring great difficulties to transportation

Images