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Horizontal shaft cable-twisting-free wind driven generator

A technology of wind power generator and horizontal axis, which is applied in the direction of wind power generator, wind power motor combination, wind power generation, etc., which can solve the problems affecting power generation, reduce cable specifications, reduce mechanical and electrical insulation performance requirements, and reduce cross-sectional area Effect

Inactive Publication Date: 2013-09-18
齐同庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Regardless of whether it is an active or passive yaw unit, when untwisting, the power generation operation must be stopped, which will affect the power generation

Method used

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  • Horizontal shaft cable-twisting-free wind driven generator

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Embodiment Construction

[0031] The methods and steps of the present invention are not different in overall design. Only the load calculation and structural analysis of the unit must be consistent with the specific layout adopted.

[0032] 1. On the chassis of the nacelle, only the main drive chain such as the wind wheel and the gearbox, and related devices are left.

[0033] 2. Fix the generator in another generator cabin above the tower under the engine room ( figure 1 , item 8). The lower part of the nacelle is fixedly connected with the tower, and the upper part is connected with the nacelle through the yaw bearing. It is best to choose a low- and medium-speed (direct drive, semi-direct drive) generator. Because of the large diameter, a flange directly connected to the tower and yaw bearing can be made on the shell, that is, the generator shell is used as the engine room. . Because the generator (chamber) is fixed, there is no twisted cable. figure 1 Item 8 in is a low speed (direct drive) ...

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Abstract

The invention discloses a horizontal shaft cable-twisting-free wind driven generator, which belongs to a power industry wind power machine technology. When the horizontal shaft wind driven generator yaws, a cable between a cabin and a tower moves in a following way, and relative angular displacement, namely, cable twisting is performed at the two ends, so that the cable is twisted helically and is shortened axially, and shear stress is generated. If the horizontal shaft wind driven generator yaws continuously in the same direction, the cable tends to be broken by shearing and pulling, thus reverse yawing, namely, cable untwisting needs to be performed at a proper moment. Operations of cable twisting and cable untwisting cause a plurality of safety problems such as increase in cost. In the horizontal shaft cable-twisting-free wind driven generator (see figure), a generator (part 8) is fixed axially below a cabin (part 5); the cable is prevented from being twisted in an immovable engine cabin on the top of a tower (part 10); a yawing bearing (part 6) is coaxial with a generator rotor; an intersecting shaft is used for driving a gear pair (part 4); the horizontal shaft power of a wind wheel is transmitted onto a generator shaft (part 7); and untwisting electric connection of the cable between the cabin and the tower is realized by using a ''cable-twisting-free power and signal conduction system'' (part 9), and the defect of cable twisting is eliminated. The horizontal shaft cable-twisting-free wind driven generator is most suitable for a downwind unit.

Description

technical field [0001] The invention belongs to the technical scope of wind power machinery in the power industry, and is a novel horizontal axis wind power generator. technical background [0002] At present, the large grid-connected wind turbines in the world are mainly horizontal axis wind turbines. Its main drive chain from the wind rotor to the generator is installed on the chassis of the nacelle. To efficiently capture wind energy requires the nacelle (active or passive) to yaw (ie rotate about the tower axis) to bring the rotor into the wind. When the wind direction changes, the nacelle automatically yaws to align the wind rotors with the wind direction. When yawing, the cables (including signal cables) between the nacelle and the tower rotate along with it, but the other end of the cables is fixed, so the cables have a relative angular displacement; therefore, the cables originally arranged at a certain distance are helical like a hemp rope twisted together and ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D9/00F03D1/00
CPCY02E10/72Y02P70/50
Inventor 齐同庆
Owner 齐同庆