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Non-linear direct-drive float type wave power generation device

A power generation device, float type technology, applied in the field of new renewable energy technology and marine equipment

Active Publication Date: 2016-06-22
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the defects of the current wave energy generation device, the present invention provides a wave energy generation device, which can not only increase the energy capture of waves at low frequencies, but also broaden the bandwidth of the energy spectrum. At the same time, the vibration of the float is relatively small when resonating. Conducive to prolonging the service life of power generation equipment

Method used

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  • Non-linear direct-drive float type wave power generation device
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  • Non-linear direct-drive float type wave power generation device

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Embodiment approach 1

[0025] The first embodiment of the present invention provides a non-linear direct-drive buoy type wave energy generating device, which includes a base, which is a heave plate 4 fixed in the sea by several anchor lines. The energy output system 3 is fixed on the upper surface of the heave plate 4, and a through hole through which the connecting shaft 2 passes is provided on the top of the energy output system 3. The through hole is provided with a seal, and the seal is sleeved on the connecting shaft On, the connecting shaft can slide up and down relative to the seal. A first magnet 7 and several second magnets 6 are arranged inside the energy output system 3 , and the second magnets 6 are arranged around the first magnet 7 . The N poles of the first magnet 7 and the second magnet 6 point to the top or bottom of the energy output system 3 . The bottom of the first magnet 7 and the bottom of the energy output system 3 are connected to each other by an elastic member, which can ...

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Abstract

The invention provides a non-linear direct-drive float type wave power generation device. When the non-linear direct-drive float type wave power generation device is placed in sea, sea wave drives a float to perform up-down movement and further drives a first magnet to perform up-down movement, an induction coil is enabled to cut magnetic field line generated by the first magnet, and therefore the function of generating power by utilizing wave energy is realized; meanwhile, a magnetic force generated by second magnets positioned at the periphery of the first magnet and that generated by the first magnet interact with an elastic force generated by a spring in an energy output system, so that the system has negative stiffness, the vibration energy is increased, the potential energy well of the energy output system shows a double-well characteristic, and the energy capture efficiency, especially the energy capture efficiency at a low frequency is improved.

Description

technical field [0001] The invention belongs to the field of novel renewable energy technology and marine equipment, in particular to a float type wave energy generating device. Background technique [0002] At present, the power generation methods mainly include wind power generation, water power generation, wave power generation and so on. Compared with wind energy, wave energy is a more durable and more energy-dense clean energy. If it can be effectively developed, it will provide human beings with sufficient and abundant clean energy. According to different energy conversion methods, wave energy generating devices can be divided into oscillating float type, oscillating water column type and shrinking ramp type. The oscillating buoy type wave energy power generation device is a well-developed energy conversion device at present. The device mainly uses the heave motion of the float to absorb wave energy, convert the wave energy into mechanical energy or hydraulic energy a...

Claims

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Application Information

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IPC IPC(8): F03B13/18F03B11/00H02K35/02
CPCF03B11/00F03B13/18H02K35/02Y02E10/20Y02E10/30
Inventor 肖晓龙肖龙飞李扬
Owner SHANGHAI JIAO TONG UNIV
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