Powerful asynchronous wind driven generator with duplex winding in dual speeds

A technology of wind power generators and double windings, applied in the direction of asynchronous induction motors, windings, electromechanical devices, etc., can solve the problems of motor heating, large size, affecting motor operation and power generation, and achieve stable operation, high efficiency, and practical structural design Effect

Inactive Publication Date: 2007-05-09
XIANGTAN ELECTRIC MFG CORP LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The winding adopts loose-embedded winding, which is easy to damage the surface insulation of the wire during the process of embedding the wire, which is likely to cause weak links in the inter-turn and phase-to-phase insulation of the motor, and the motor will heat up, so that the insulation breaks down, affecting the normal operation of the motor and power generation
At present, the two-speed double-winding wind turbines above the MW level adopt an air-cooled structure, the cooling effect of the motor is not good, and the volume is large, which is not suitable for the small moment of inertia of the stall-type wind turbines.

Method used

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  • Powerful asynchronous wind driven generator with duplex winding in dual speeds

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0009] Referring to Fig. 1, this embodiment includes a casing 1, a formed stator winding 2, a stator core 3, and a rotor 4. The casing 1 is made into a water-cooled interlayer, and a ventilation pipe 5 is embedded in the interlayer of the casing 1. Two sets of Connected into double-molded stator windings 2 with different numbers of poles, and a centrifugal fan 6 is installed on the rotor. The soft end hoops 7 at the ends of the forming winding 2 are bound, and the two windings are separated by double soft end hoops 8 intermittent bindings. The rotor core 3 is provided with axial ventilation holes 9 . Centrifugal fan 6 presses the hot air generated on the rotor from the non-drive end into the water jacket ventilation pipe for heat exchange, and the cold air after heat exchange cools the end of the stator winding, and at the same time, axially enters the ...

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Abstract

The asynchronous generator consists of the chassis, the formed stator winding, the stator iron core and the rotator. Special points are that the chassis possesses a water cooling twin layers; the wind tube is buried within this twin layers; two sets of twin formed stator windings with different pole numbers are adopted; A centrifugal fan is set on the rotator. The end of the formed winding is colligated with a soft end hoop. The two windings are separated by a discontinuous colligation with the double soft end hoops. The axis directional vent holes are made on the rotator core. The invention ensures a stable, safe, reliable and efficient running. Its power can reach 1300 / 250 KW.

Description

technical field [0001] The invention relates to a generator, in particular to a high-power double-speed double-winding asynchronous wind power generator. Background technique [0002] At present, the supporting motors of the main models of 600kW and 750kW wind turbines are double-winding air-cooled asynchronous generators. In order to improve the design and manufacture level of wind turbines and keep up with the development trend of large-scale wind turbines, MW-level two-speed double-winding wind turbines are used as one of the main models of stall-type wind turbines. The structure of the existing general asynchronous generator is not suitable for the MW-level wind asynchronous generator involved in the present invention. It is specifically manifested in that the general two-speed double-winding wind power generator adopts an air-cooled cooling structure, and the inner fan and the outer fan on the rotor generate relatively Large wind friction red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/42H02K5/20H02K9/06H02K3/50H02K1/32
Inventor 余冰尹曾锋邹本飞张越雷
Owner XIANGTAN ELECTRIC MFG CORP LTD
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