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Transmission chain for wind power equipment and method for controlling rotation speed or torque

A technology of wind power generation equipment and transmission chain, applied in the field of transmission chain, can solve the problems of expensive manufacturing, reduced overall efficiency, high technical cost and the like

Inactive Publication Date: 2012-02-29
AMSC风技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem with both solutions is that the current produced by the generator must be accurately synchronized with the grid, which requires complex control devices and circuits or converters, which are not only expensive to manufacture, but also have large or small power losses
This not only requires high technical outlay, but also reduces the overall efficiency to a large extent due to the two additional auxiliary drives or generators and the converter between them

Method used

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  • Transmission chain for wind power equipment and method for controlling rotation speed or torque
  • Transmission chain for wind power equipment and method for controlling rotation speed or torque
  • Transmission chain for wind power equipment and method for controlling rotation speed or torque

Examples

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Embodiment Construction

[0020] like figure 1 and 2 As shown schematically, a rotor 1 with a plurality of rotor blades 2 drives a transmission, preferably a planetary gear 4 , via a rotor shaft 3 . A three-phase AC motor (synchronous motor 5 in the exemplary embodiment shown) and an auxiliary drive (for example in the form of an asynchronous motor 7 ) are connected to the planetary gear 4 via a main shaft 6 , via an auxiliary shaft. The synchronous motor 5 is directly connected to the grid via a wire 9 . In contrast, the asynchronous motor 7 is connected to the line 9 or the grid 12 via a converter 10 and a line filter 11 . Between the line 9 and the grid 12, a transformer 13 and a main switch 14 can be connected as usual.

[0021] The device as a whole is controlled by a control unit 15 . The control unit obtains the following data: the rotational speed of the drive shaft 6 of the synchronous motor 5 and the auxiliary shaft of the asynchronous motor 7 via lines 16 and 17; the current of the async...

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Abstract

The invention relates to transmission chain for wind power equipment and a method for controlling revolving speed or torque, wherein a power train for a wind power plant comprising a rotor (1) for driving a gear (4), wherein the rotor blades (2) of the rotor are pivotally arranged around the longitudinal axis thereof on the hub of the rotor (1). A three-phase generator (5) is connected to the gear (4) and a power supply network (12). The gear (4) is also provided with an auxiliary variable speed drive (7). Each rotor blade (2) is provided with a drive for individually rotating around the longitudinal axis thereof for levelling the rotation speed and / or the torque of the power train.

Description

technical field [0001] The invention relates to a transmission chain of a wind power plant, comprising a rotor as a drive for a transmission, wherein rotor blades are mounted on a rotor hub rotatable about its longitudinal axis; further comprising a connection between the transmission and a grid a connected three-phase alternator; and an auxiliary drive including variable speed for the transmission. [0002] The invention also relates to a method for controlling the rotational speed or torque in a drive train of a wind power plant, wherein a three-phase alternator is driven by a transmission which in turn is driven by the rotor of the wind power plant shaft and an auxiliary drive. Background technique [0003] In wind power plants, there is in principle the possibility of using synchronous generators or asynchronous generators for generating the current supplied to the grid. [0004] The problem with both solutions is that the current produced by the generator must be accu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/02F03D7/04F03D11/02F03D9/00
CPCF03D7/024F03D7/0276Y02E10/723Y02E10/725F05B2270/1014F03D7/042Y02E10/722F03D9/003F03D9/00F03D7/0224F03D11/02F16H3/724F03D15/00F03D9/255Y10T74/1987F03D15/10Y02E10/72F03D7/02F03D7/04
Inventor 格拉尔德·黑亨贝格尔
Owner AMSC风技术有限公司