Inverted hanging type wave energy generation device and optimal capturing method thereof

Abstract

The invention discloses an inverted hanging type wave energy generation device and an optimal capturing method thereof. Wave energy is captured through a cylinder floater. A rotor of a linear motor isdriven by a crank connecting rod and a change wheel in a speed raising mode so as to generate electricity, and the wave energy capture power is adjusted by means of an uncontrollable rectifier and aBOOST converter. Wave energy capturing is improved by adopting the collaborative optimal capturing method including capturing control stabilization optimization and capturing control disturbance optimization. Wave energy feature extraction is achieved based on omnibearing collection of sixteen buoys internally comprising accelerometers and gyroscopes. Capturing control stabilization optimization is achieved on the basis of collaborative optimization of a cylinder floater dynamic model and effective output power of a linear generator. Capturing control disturbance optimization is achieved by disturbance adjustment of parameters of a controller based on steady-state optimization of the controller in combination with on-line optimization of the output power of the generator. The inverted hanging type installing and optimal capturing method greatly lowers the sealing and corrosion prevention requirements of equipment, and greatly improves wave energy capturing power.

Description

technical field [0001] The invention discloses an upside-down wave energy power generation device and its optimal capture method, which is a new type of power generation that is applied to vast oceans, effectively regulates the fluctuation of offshore wind power output power, and provides reliable electric energy for remote islands, coastal areas, and passing ships. device and its optimal capture method. Background technique [0002] As the world's energy crisis and environmental pollution become more and more serious, new energy sources such as wind power and wave energy are generally favored by countries all over the world. my country clearly proposes to speed up the development of marine resources and promote the upgrading of energy structure. As a clean energy, wave energy has a large content in the sea, and has become an important research direction for scientific researchers in various countries. At present, the research and development and trial production of wave ene...

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Problems solved by technology

As a clean energy, wave energy has a large content in the sea, and has become an important research direction for scientific researchers in various countries. At present, the research and development and trial production of wave energy power generation equipment have achieved rapid development, especially the sea snake wave energy device in the United Kingdom and the Power- Buoy has been successfully applied in the sea, but the key equipment for wave energy conversion is submerged in seawater. The high salinity and high pressure environment of seawater can easily lead to corrosion and distortion of equipment, which makes the sealing, material stiffness and corrosion resistance of wave energy capture equipment, etc. Higher requirements in terms of equipment greatly increase the cost of equipment production, installation and maintenance, and reduce the service life of wave energy capture equipment; because the wave energy capture equipment is completely submerged in the water, the capture base point of the wave energy capture equipment changes with wave fluctuations, At the same time, due to the use of energy storage equipment such as hydraulic pressure or compressed air to regulate the damping force and spring force of the wave energy capture device, there is a serious hysteresis, which restricts the efficient capture of wave energy and the real use of wave energy power generation devices.

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