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Method for smoothing output power of direct-drive type ocean wave electric generator

An output power and generator technology, applied in the control of generators, electrical components, control systems, etc., can solve the problems of high investment and high cost of energy storage equipment, reduce cost investment, enhance power output quality, and improve operation. performance effect

Inactive Publication Date: 2014-10-01
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cost of electric energy storage equipment is relatively high, especially for large-scale ocean wave power generation systems, adding electric energy storage equipment means a high investment in the overall cost

Method used

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  • Method for smoothing output power of direct-drive type ocean wave electric generator
  • Method for smoothing output power of direct-drive type ocean wave electric generator
  • Method for smoothing output power of direct-drive type ocean wave electric generator

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Such as figure 1 , figure 2 Shown is a direct-drive ocean wave generator, which includes an annular outer buoy 2, a cylindrical inner buoy 3, a linear motor composed of a mover 5 and a stator 6, and the outer buoy 2 is set in the inner buoy 3. On the outside, a triangular platform 4 is fixed on the top of the outer buoy 2 , the mover 5 is fixed to the triangular platform 4 through a rigid connecting rod, and the stator 6 is fixed inside the inner buoy 3 . Under the action of the ocean wave 1, according to the theory of ocean wave dynamics, the outer buoy 2 will reciprocate in the vertical direction with the ups and downs of the ocean wave, while the inner buoy 3 is approximately stationary, so the distance between the outer buoy 2 and the inner buoy 3 At the same time, the mover 5 and the stator 6 will also produce relative motion, and finally generate electr...

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Abstract

The invention discloses a method for smoothing output power of a direct-drive type ocean wave electric generator. On the premise of conducting direct electric generation through ocean wave energy, the purpose is realized that the power output by the electric generator is enabled to be smooth and steady through the method of adjusting the current iq of a shaft q of the electric generator, instead of additionally arranging electrical energy storage devices required by a regular ocean wave electric generation system. The prediction method of ocean wave heights based on an ARMA model is introduced to the calculation process of the ocean wave energy, the magnitude of the current iq of the shaft q of the electric generator is properly adjusted according to the work efficiency of the ocean wave electric generator, so that the process of converting the ocean wave energy into electric energy is enabled to be smooth and steady, and thus it is guaranteed that the output power of the ocean wave electric generator is enabled to be smooth and steady. According to the method for smoothing the output power of the direct-drive type ocean wave electric generator, on the one hand, the electrical energy storage devices required by the regular ocean wave electric generation system are omitted, and thus input cost is greatly reduced, on the other hand, the electrical energy quality output by the ocean wave electric generation system is improved, and the operation performance of parallel grid power transmission of a direct-drive type ocean wave electric generation system is improved.

Description

technical field [0001] The invention relates to a method for stabilizing the output power of a direct-drive ocean wave generator, which belongs to the marine renewable energy power generation technology. Background technique [0002] Ocean wave energy comes from solar energy, which is a clean and renewable energy source. Reasonable and efficient development and utilization of ocean wave energy is of great significance to the healthy and sustainable development of the ocean economy and to alleviate the global energy shortage. [0003] According to the motion characteristics of ocean waves, the wave energy of the same wave particle at different times is different. Therefore, in the process of converting ocean wave energy into electrical energy, the output power of the ocean wave generator is non-stationary. In order to suppress the non-stationarity of the output power of the ocean wave generator and consider the grid-connected transmission of the output power of the ocean wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/10
Inventor 余海涛陈中显胡敏强黄磊
Owner SOUTHEAST UNIV
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