Double-stator direct-drive permanent magnet wind powered generator

Abstract

The invention relates to a double-stator direct-drive permanent magnet wind powered generator. The generator comprises an inner stator, an outer stator, a cup-shaped rotor, a front flange, a rear flange, a shell, a main shaft, a front bearing, a front shaft sleeve, a front bearing outer cover, a front bearing inner cover, a rear bearing, a rear shaft sleeve, a rear bearing inner cover, a rear bearing outer cover, a lock sleeve and a lock nut, wherein both the inner and outer stators comprise a stator iron core and a polyphase winding arranged in the stator iron core respectively; the outer stator is fixed on the shell; the inner stator is fixed on the flange opposite to the opening of the cup-shaped rotor; the cup-shaped rotor comprises a rotor iron core, a supporting frame supporting the rotor iron core, and permanent magnets which are crossly arranged on the rotor iron core and are different in polarity; the main shaft runs through the front and rear flanges and the cup-shaped rotor through the front bearing, the front shaft sleeve, the front bearing outer cover, the front bearing inner cover, the rear bearing, the rear shaft sleeve, the rear bearing inner cover and the rear bearing outer cover and is extended out of the front flange; and the front and rear flanges are fixed on the shell. The generator can effectively improve the efficiency of a motor and reduce the cost of the motor, and can be widely applied to various sea and land wind powered generation fields.

Description

Technical field [0001] The invention relates to a wind power generator equipment, in particular to a double stator direct drive permanent magnet wind power generator. Background technique [0002] At present, special generators for wind power generation are developing in the direction of high reliability, low maintenance, reduced components, lower costs, high efficiency, and high integration. The general trend is that the capacity of a single unit continues to increase. In variable-speed and constant-frequency wind power generation systems, doubly-fed asynchronous generators and permanent magnet synchronous generators are mostly used. Among them, the doubly-fed asynchronous generator has a gearbox and carbon brushes and slip rings on the rotor, which in turn makes the system high in cost, poor in reliability, large in maintenance, and serious noise pollution. And when it runs at low load, the efficiency is low, especially as the capacity of a single machine increases, the proble...

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Problems solved by technology

However, this type of generator has complex structure, high cost and low efficiency

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