Multidirectional bistable wave energy converter

Abstract

The multidirectional bistable wave energy converter comprises a left raft body, a right raft body and a hinged body between the left raft body and the right raft body, hinged structures on the two sides of the hinged body are arranged in a cross shape, the raft body on one side can do pitching motion relative to the hinged body, and the hinged body on the other side can do yawing motion relative to the hinged body; bistable devices capable of stretching and retracting longitudinally are symmetrically arranged between the center positions of the two sides of the hinged body and the center positions of the hinged ends of the two raft bodies, and hydraulic power generation systems are arranged at the hinged ends of the two raft bodies respectively. The bistable device has the following advantages that the elastic force of the bistable device forms an elliptical potential energy well on pitching and yawing phase planes, so that pitching and yawing of the two rafts tend to be opposite, and the wave energy capturing efficiency is improved; the equivalent inherent frequency of the transducer can be effectively reduced, and the wave energy capturing efficiency of the transducer in a low-frequency region is improved. The jumping characteristic between the two wells can effectively widen the wave energy conversion frequency band of the transducer, improve the conversion efficiency, increase the generating capacity, and improve the adaptability of the transducer under complex sea conditions.

Description

technical field [0001] The invention belongs to the field of marine engineering renewable energy, and relates to a multidirectional bistable wave energy converter. Background technique [0002] The vast ocean contains abundant energy, and wave energy is one of its most common forms. Compared with renewable and clean energy such as wind and solar energy, wave energy has the characteristics of high energy density. However, in the actual development and utilization of wave energy, there are reasons such as low conversion efficiency of wave energy devices, high installation and maintenance costs, and poor universality, which have not yet been applied in large-scale production and practice. [0003] There are many concepts of wave energy conversion. Among the wave energy conversion devices proposed so far, the articulated floating body wave energy converter has high wave energy conversion efficiency and does not need to rely on fixed restraint structures. is widely adopted. Al...

AI Technical Summary

Problems solved by technology

In the spring negative stiffness mechanism, it is mostly realized through the form of auxiliary spring compression. However, when the length of the compression spring is large, it is prone to instability after being loaded, and it is difficult to adjust it in actual complex and changeable sea conditions.

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