Low-frequency and frequency-adjustable float-type wave power generation device

A wave power generation and float-type technology, applied in safety devices, ocean energy power generation, engine components, etc., can solve the problems of large space occupation and complex structure of the wave power generation system, and achieve extremely low frequency self-vibration, reduced volume, small size, etc. The effect of long space

Active Publication Date: 2020-11-27
THE HONG KONG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems existing in the prior art, the present invention provides a low-frequency and frequency-adjustable float type wave power generation device to overcome the problems of large space occupation and complex structure of the wave power generation system in the prior art

Method used

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  • Low-frequency and frequency-adjustable float-type wave power generation device
  • Low-frequency and frequency-adjustable float-type wave power generation device
  • Low-frequency and frequency-adjustable float-type wave power generation device

Examples

Experimental program
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experiment example 1

[0080] Experimental Example 1 Free Vibration Test

[0081] In this test, the position of the second mass body 3 is fixed, and the first mass body 2 is gradually moved downward from the top, Figure 10 The natural frequency of the dual-mass vibrator device under free vibration conditions is shown when the first mass body 2 is at different adjustment positions. see Figure 10 , the frequency of the dual-mass vibrator device can reach an extremely low frequency of 0.2 Hz in experiments. When the position of the first mass body 2 continues to move downward, the natural frequency increases, and finally reaches a maximum value of 1.4 Hz, which shows the effectiveness of the dual-mass vibrator device in realizing extremely low-frequency self-vibration and frequency tuning.

experiment example 2

[0082] Experimental example 2 wave tank test

[0083] Place the device in a wave tank for testing. Figure 11 When the position of the second mass body 3 is fixed, when the position of the first mass body 2 is different, the output voltage of the buoy generating device under different wave periods is shown. The symbol h in the figure represents the wave height. see Figure 11 , when the position of the first mass body 2 is different, its natural vibration frequency is different. In the wave tank test, a lower natural vibration frequency of 0.67 Hz can be observed. The change of the frequency of the vibrator makes the buoy device suitable for different sea conditions, which is beneficial to improve the energy output.

[0084] In summary, Figure 10 and Figure 11 Both have shown that the floater-type wave power generation device with the double-mass vibrator as the core can achieve a very low natural vibration frequency (<1 Hz), and can effectively realize the frequency mo...

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Abstract

The invention relates to the field of renewable energy power generation, and discloses a low-frequency and frequency-adjustable float-type wave power generation device. The low-frequency and frequency-adjustable float-type wave power generation device comprises a dual-mass vibrator device, wherein the dual-mass vibrator device comprises a first mass body, a second mass body, a connecting rod, a rotating shaft, a coupling and a generator; the generator is connected with the rotating shaft through the coupling; the connecting rod perpendicular to the rotating shaft is arranged on the rotating shaft in a penetrating manner; the two ends of the connecting rod are movably connected with the first mass body and the second mass body respectively; and the distances between the first mass body andthe rotating shaft and between the second mass body and the rotating shaft can be adjusted. The low-frequency and frequency-adjustable float-type wave power generation device adopts a dual-mass vibrator form, so that the required structural space is also obviously reduced while extremely low-frequency self-vibration is realized; a frequency tuning factor is considered, and the relative positions of the two mass bodies can be adjusted in real time to realize frequency modulation, so that resonance is realized and the output power is further improved; and the low-frequency and frequency-adjustable float-type wave power generation device has important application prospects in the aspects of maritime systems, new energy power supply and the like.

Description

technical field [0001] The invention relates to the field of renewable energy power generation, in particular to a low-frequency and frequency-adjustable float type wave power generation device. Background technique [0002] Renewable energy sources include, but are not limited to, solar energy, wind energy, and wave energy. Among them, due to its high predictability and high energy density of 2-3kW / m 3 , gradually attracting the attention of researchers. In recent years, different types of wave energy collectors have been gradually proposed, with the buoy type being the main type. The principle of the buoy type wave collection device is to drive the energy output system (usually pneumatic transmission, mechanical transmission, high-pressure hydraulic transmission) through the relative motion between the buoy itself and the seabed, or the platform, or the submerged device, and then convert the buoy movement caused by the wave for electrical energy. [0003] From the poin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B13/20F03B15/00
CPCF03B13/20F03B15/00Y02E10/30
Inventor 朱松晔蔡亲霖
Owner THE HONG KONG POLYTECHNIC UNIV
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