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Direct drive type wind turbine generator system

A wind turbine, direct-drive technology, applied in the direction of wind motor combination, wind engine, wind power generation, etc., can solve the problems that increase the difficulty of unit design, the difficulty of wind farm construction, large volume and weight, and excessive motor volume and weight. , to achieve the effect of improving economy and reliability, reducing weight and reducing load

Inactive Publication Date: 2012-11-07
GUODIAN UNITED POWER TECH
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AI Technical Summary

Problems solved by technology

However, traditional permanent magnet direct drive wind turbines or electric excitation synchronous wind turbines are too bulky and heavy
According to AMSC's prediction, if a 10-megawatt-class direct-drive permanent magnet generator manufactured by traditional technology is used, its weight will reach about 300 tons. Design Difficulty and Wind Farm Construction Difficulty

Method used

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  • Direct drive type wind turbine generator system

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Embodiment Construction

[0018] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0019] see figure 1 As shown, a direct-drive wind power generating set of the present invention includes a frame 20, a main shaft 3, a hub 5 and a generator 21, wherein the generator 21 adopts a high-temperature superconducting generator, that is, its rotor 2 adopts a superconducting excitation coil 16 Excite the motor.

[0020] The rotor 2 of the generator 21 of the present invention can be fixedly connected with the hub 5 through the rotor bracket 6, and the rotor bracket 6 is rotatably supported on the main shaft 3, so that the rotor 2 and the hub 5 can rotate around the main shaft 3 at the same speed. Preferably, the present invention adopts a double bearing la...

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Abstract

The invention relates to a direct drive type wind turbine generator system, comprising a frame, a main shaft, a hub and a power generator, wherein a rotor magnetic exciting coil of the power generator adopts a superconducting magnetic exciting coil. Since the direct drive type wind turbine generator system adopts a direct drive type structure, a high temperature superconducting power generator, and a main shaft layout form with double bearings, the weight and the size of a motor and the weight of a cabin can be decreased greatly, the loads on a tower frame of the system and a foundation can be reduced, and the bending moments of the main shaft and the bearings can be decreased; and therefore, the economy and the reliability of system operation are improved.

Description

technical field [0001] The invention belongs to the application field of wind power generation technology, and relates to a wind power generating set, in particular to a direct-drive wind generating set using a high-temperature superconducting generator. Background technique [0002] As we all know, the current onshore wind power technology is very mature, but the utilization of onshore wind energy is limited by geographical conditions and exploitable capacity. In contrast, offshore wind power has the characteristics of rich resources, high wind speed, low turbulence, high power generation utilization hours, no land occupation and suitable for large-scale development. It is the latest frontier of global wind power development. Therefore, in recent years, European and American countries have begun to shift the focus of wind power development to offshore wind power. As of 2011, there were 15 offshore wind farms in Europe with a generating capacity of more than 100 MW. In Jun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K55/04F03D9/00
CPCY02E40/625Y02E10/72Y02E40/60
Inventor 王文亮秦明代海涛周志超许伟
Owner GUODIAN UNITED POWER TECH
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