Wind generating set

A technology for wind turbines and magnets, applied in wind turbines, wind power generation, wind turbine control, etc., can solve the problems of increased use of magnets, rising costs, high costs, etc., and achieve the effect of reducing the risk of loss of magnetism

Active Publication Date: 2012-02-15
XINJIANG GOLDWIND SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, choosing a magnet with a higher material grade means higher cost
In addition, with the continuous enlargement of wind power generators, the size of the generator is also increasing, and the use of magnetic steel is also increasing, resulting in rising costs

Method used

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Embodiment Construction

[0025] The invention provides a control method for a wind power generating set, the basic concept of which is to control the output power of the generating set according to the temperature of the magnetic steel of the wind generating set. In general, the higher the output power of the generator set, the greater the heat generated by the winding part of the generator set, which will make the temperature of the magnetic steel higher. When it is detected that the temperature of the magnetic steel is rising and approaching a predetermined value (it can be the design limit value or a different gradient value), the generator set is controlled to reduce the output power accordingly, so that the heat generation of the winding part is reduced, thereby Keep the temperature of the magnetic steel at a safe working temperature to protect the performance of the magnetic steel and prolong the service life of the magnetic steel.

[0026] Hereinafter, embodiments of the present invention will ...

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Abstract

The invention provides a control method of a wind generating set. The control method comprises the following steps of: detecting the magnetic steel temperature T of the wind generating set; judging whether the detected magnetic steel temperature T is greater than the preset magnetic steel detection contrast temperature T0; and if the detected magnetic steel temperature T is greater than the magnetic steel detection contrast temperature T0, reducing the output power of the wind generating set to protect the performance of the magnetic steel. According to the control method of the wind generating set, the magnetic steel of the wind generating set can work at a safe design temperature, and excitation loss risk of the magnetic steel due to temperature rise is reduced.

Description

technical field [0001] The invention belongs to the field of wind power generation, and relates to a control method for a wind power generating set. Background technique [0002] The direct-drive wind turbine can be directly connected to the wind wheel, which saves the gearbox components with high failure rate in the traditional wind power generation system, reduces the maintenance work of the generator set, and reduces the noise, and has high efficiency and reliability. It is widely used because of its advantages. [0003] figure 1 It is a structural schematic diagram of the generator part of a permanent magnet direct drive wind power generating set, wherein, the number 1 indicates the stator, the number 2 indicates the bearing, the number 3 indicates the rotor, the number 4 indicates the iron core, the number 5 indicates the winding (coil), and the number 5 indicates the winding (coil). 6 represents magnetic steel. [0004] refer to figure 1 , the process of wind power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/02H02P9/00H02H5/04H02H7/06
CPCY02E10/72
Inventor 王栋吴凯
Owner XINJIANG GOLDWIND SCI & TECH
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