Wind generating set

Abstract

The invention provides a wind generating set. The wind generating set comprises an engine room and a tower barrel, wherein the engine room is mounted at the top of the tower barrel; the engine room is connected with the tower barrel through a yaw bearing; a rotating shaft which is coaxial with the yaw bearing is mounted at the bottom of the engine room; two or more rotor slides which are arranged at intervals and are mutually insulating are arranged on the rotating shaft; each rotor slide correspondingly communicates with one engine room cable; stator slides which are in one-to-one fit with the rotor slides are arranged in the tower barrel; and each stator slide communicates with one tower barrel cable. According to the wind generating set provided by the invention, the engine room cables and the tower barrel cables are connected through slip rings and are adopted as main cables for power transmission, the engine room cables are in the relative static state relative to the engine room, the tower barrel cables are in the static state relative to the tower barrel, the cables are not twisted during the yaw process of the engine room, the technical characteristic requirement of the main cables is reduced, the cables do not need to have high torsion resistance and high abrasion resistance, and cost of the cables is reduced.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a wind power generating set in which the cable connection between the nacelle and the tower is realized through a conductive slip ring. Background technique [0002] The yaw system is one of the important components of the wind turbine. It has two main functions: 1. The yaw system of the wind turbine is also called the wind-facing device. Its function is to quickly Align the wind direction smoothly so that the wind rotor can obtain the maximum wind energy; 2. When the wind turbine generator set is entangled due to the yaw effect, the cable drawn out of the nacelle will be uncabled automatically. [0003] Generally, the yaw system is composed of a slewing support bearing, a spring damping device and a gear transmission mechanism driven by a motor. The yaw bearing with internal teeth is connected to the top of the tower with bolts, the inner ring is connected to the c...

AI Technical Summary

Problems solved by technology

Ordinary cables are not suitable for twisting at low temperatures. These requirements limit the cables used in the yaw section to have characteristics such as wear resistance, torsion resistance, and low temperature resistance, which makes the cost of the main cable high.

[0007] 2. With the introduction of 5MW, 6MW and above high-power units, the diameter of the main power cable bundle of the unit under the voltage of 1000V is very large (for example, the diameter of the 6MW-level main cable bundle reaches 600mm), and it is very difficult to implement twisting cables, which will make the deviation The power of the navigation system increases, and the number of faults increases

[0009] 4. In order to adapt to the yaw twisted cable, the cable length margin at the saddle platform must be reserved, which increases the cost of the supporting cable

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