Variable pitch method for tidal current energy generating set

A generator set and tidal current energy technology, applied in ocean energy power generation, engine control, engine components, etc., can solve the problems of reducing power generation efficiency and achieve the effect of increasing power generation and energy capture efficiency

Inactive Publication Date: 2015-03-25
GUODIAN UNITED POWER TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this design simplifies the structure and saves costs, it has the disadvantage of not being able to adjust the energy

Method used

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  • Variable pitch method for tidal current energy generating set
  • Variable pitch method for tidal current energy generating set

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Embodiment Construction

[0017] Different from wind power generators, for tidal current energy generating units, due to the consideration of the complex and harsh underwater environment and the reciprocating flow characteristics of tidal currents, in order to realize the normal power generation of the unit in two-way flow, a double impeller structure is set , using 0-270 degree pitch system.

[0018] Such as figure 1 As shown, the tidal current energy generating set includes a blade 1, a nacelle 2, and a hub 3, wherein the pitch control system is arranged in the hub or the blade. The implementation of the pitch system is as follows:

[0019] (1) First set the feathering angle of the forward incoming flow to be 0°. When the maximum energy needs to be captured, the pitch needs to be changed, and the maximum angle of the positive incoming flow to capture energy is 90°; (2) When the forward incoming flow, It is equivalent to power adjustment at 0° and 90°; (3) when the reverse incoming flow, the blade n...

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Abstract

The invention discloses a variable pitch method for a tidal current energy generating set. The variable pitch angle of the tidal current energy generating set ranges from 0 degree to 270 degrees. The method comprises the steps that the full feathering angle of forward incoming currents is set to be 0 degree, the angle for capturing the maximum energy of the forward incoming currents is set to be 90 degrees, the full feathering angle of reverse incoming currents is set to be 180 degrees, and the angle for capturing the maximum energy of the reverse incoming currents is set to be 270 degrees; in the condition of the forward incoming currents, oar blades are set at 0-90 degrees to conduct power adjustment; in the condition of the reverse incoming currents, the oar blades are set at 180-270 degrees to conduct power adjustment. According to the variable pitch method for the tidal current energy generating set, the bidirectional variable pitch is adopted, it is ensured that the generating set can work in the bidirectional tidal currents by rotating the blades by 0-270 degrees, the tidal current energy is fully captured, application is conducted flexibly, the energy capture efficiency can be improved, and the power generation capacity can be increased.

Description

technical field [0001] The invention relates to the technical field of tidal current energy generation, in particular to a method for changing the pitch of a tidal current energy generating set. Background technique [0002] Ocean energy is one of the inexhaustible clean energy sources. The development and utilization of ocean energy is the direction that many countries are striving to develop. Tidal current energy generation is a branch of ocean energy utilization, and its development process is similar to that of other clean energy sources. The use of ocean energy power generation has experienced a development process from small power to high power, and finally reached the development process of grid-connected operation with large power grids. The sign of truly utilizing ocean energy is to build an ocean energy power generation system that can reach the level of a commercial power station and be truly connected to the grid. [0003] my country's coastline is long and tort...

Claims

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Application Information

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IPC IPC(8): F03B13/26F03B15/00
CPCF03B13/26F03B15/06F05B2270/329F05B2270/335Y02E10/30
Inventor 杨建锋张莹博李明辉武春晓王彦龙
Owner GUODIAN UNITED POWER TECH
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