Multi-degree of freedom oscillation floater wave energy power generation device and power generation method

Abstract

The invention discloses a multi-degree of freedom oscillation floater wave energy power generation device and a power generation method. The multi-degree of freedom oscillation floater wave energy power generation device comprises a bracket fixed on the sea surface, and two parallel supporting rods with racks are arranged on the bracket in the horizontal direction, each supporting rod is sleeved with a sliding bearing, and a gear capable of meshing with each rack on each supporting rod is installed on a horizontal guide rod. A horizontal through hole is formed in the side portion of a floaterplaced on the sea surface, a rotating shaft is installed in the through hole, in addition, both ends of the rotating shaft are respectively connected with a vertical guide rod with a rack through a bearing, and the two vertical guide rods are parallel to each other and are respectively connected with each horizontal guide rod through a bearing. The gears which can mesh with the racks on each vertical guide rods are installed on the horizontal guide rods. The multi-degree of freedom oscillation floater wave energy power generation device and the power generation method are provided with three degrees of freedom of vertical oscillation, longitudinal oscillation and longitudinal shaking. Under the condition that the incident wave is constant, the monomer efficiency can be improved and the wave energy in multiple directions can be captured, and thus the wave energy is absorbed to a greater extent to increase energy conversion efficiency and power generation efficiency.

Description

technical field [0001] The invention belongs to the field of wave energy generating devices, in particular to a multi-degree-of-freedom oscillating float wave energy generating device and a generating method in the field. Background technique [0002] Energy is an important material basis for human survival. In today's world, fossil fuel energy is being exhausted, and the development and utilization of renewable energy has become an inevitable trend of development. Ocean energy, as a kind of renewable energy with abundant reserves, clean and environment-friendly, has attracted great attention of people. There are various forms of ocean energy, such as tidal energy, salinity difference energy, tidal current energy, temperature difference energy, wave energy, etc. Among them, wave energy is the most widely distributed, has extremely rich reserves, and has a high energy flow density. are available. [0003] Wave energy power generation devices generally involve three energy c...

AI Technical Summary

Problems solved by technology

However, the power capture performance of the oscillating buoy is not satisfactory. The average energy capture width ratio of the heave-type oscillating buoy wave energy conversion device is 16%. , the ideal capture power can be obtained around this frequency

The wave energy conversion device of the traditional single-degree-of-freedom oscillating float linear energy harvesting system has very low energy conversion efficiency under the condition of non-resonant frequency, and the capture width is relatively small, the energy absorption and utilization rate of the wave field is low, and the manufacturing cost of equipment and cables Relatively high

Due to the characteristics of short period, small wave height, and low energy-flux density of my country's waves, it is difficult to achieve good results by simply increasing the structure size to obtain higher energy conversion efficiency.

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