Active resonance C-type buoyancy pendulum wave energy power generation device

Abstract

The invention discloses an active resonance C-type buoyancy pendulum wave energy power generation device which is a cabin-shaped wave energy power generation device completely immersed in water. The active resonance C-type buoyancy pendulum wave energy power generation device comprises an energy harvesting system, a power generation system and a raft type base, wherein the energy harvesting systemcomprises a cabin-shaped pendulum body, an automatic mass center adjusting device is arranged in the pendulum body, the pendulum body is fixedly connected to a main shaft, the main shaft is connectedwith the power generation system, the main shaft is further provided with an encoding disc used for testing the swing of the pendulum body, the two side surfaces of the pendulum body are parallel, awave-sheltering surface is of a structure with a larger arc on the upper portion and a smaller arc on the lower portion, wherein the two arcs are concentric, a spiral line, an involute and a high-order curve are adopted for transition between the two arcs, the distance between the outer normal of the transition curve and the axis of the main shaft is the smallest, the wave-facing surface is a plane or an inward-concave arc surface or a curved surface the same as the wave-sheltering surface, the power generation system comprises a chain, a ratchet wheel, a reversing shaft, a speed increaser anda permanent magnet generator, and the power generation system is internally arranged in a pendulum body cabin or located outside the pendulum body. By adjusting the mass center position of the activeresonance C-type buoyancy pendulum wave energy power generation device, real-time resonance between the pendulum body and the wave is realized, and efficient conversion of wave energy is realized.

Description

technical field [0001] The invention relates to an active resonance C-type buoyancy pendulum wave energy power generation device, in particular to a power generation device using sea wave energy, which belongs to the technical field of new energy. Background technique [0002] Wave energy is one of the main forms of ocean energy. It is a clean and renewable energy that is easy to use, has a large reserve, is widely distributed, and has a high energy flow density. Among them, the utilization of wave energy is a research hotspot in the world today. Ocean powers around the world are conducting research in this area, and more than 4,500 technical solutions have been proposed. According to the 2016 JRC Ocean Energy Status Report, Attenuator / Point absorber / OWC / OWSC four types of devices The technology maturity level TRL has reached level 8, which is close to commercialization. The technical maturity of the current research mainly reflects the deployment, operation and maintenance...

AI Technical Summary

Problems solved by technology

However, further research is needed on the wave-facing surface of the eagle-type device. The increase of the distance between the normal direction of the wave-facing surface and the hinge axis will increase the radiation moment on the wave-facing surface, which is not conducive to absorbing waves. It is also not conducive to energy absorption of the device. Similarly, waves will break on the water surface, increasing viscous damping, which is not conducive to wave absorption.

[0006] From the above analysis, it can be seen that the existing wave energy utilization device has: the natural vibration period of the wave energy system brought about by the excessively large attached mass of the device is much higher than the actual wave period, so it is difficult to resonate. On the other hand, the attached damping is too large , making the pendulum amplitude smaller, reducing the stroke of wave force acting on the wave energy system, thereby reducing the input of wave energy to the wave energy system

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