A vortex vibration power generation device with broadband energy harvesting characteristics

Abstract

The invention discloses a vortex vibration power generation device with broadband energy collection characteristics, which includes a generator, a rack, a nonlinear energy well, a hollow cylinder and a connecting frame; the connecting frame is installed at both ends of the hollow cylinder; the non-linear The linear energy well and the gear rack are installed on the connecting frame; the end of the connecting frame extends into the nonlinear energy well; the gear rack is meshed with the gear of the generator. In the present invention, through the setting of the nonlinear energy well, the nonlinear energy well has the characteristic of cubic nonlinearity, and can broaden the frequency band of the objects connected to it, so that it can generate vortex-induced vibration in a wide wind speed range, thereby generating electricity. The problem that the frequency of vortex shedding varies momentarily is solved; the invention directly converts the vibration energy into electric energy, has a simple structure, and has low energy loss.

Description

technical field [0001] The invention relates to a vortex vibration power generation device, in particular to a vortex vibration power generation device with broadband energy collection characteristics, belonging to the fields of fluid mechanics and new energy power generation. Background technique [0002] As a relatively easy-to-develop new energy, wind energy is inexhaustible and green, and has developed rapidly in recent years. my country's wind energy resources are abundant, but the distribution is uneven. The areas with rich wind resources are mostly located in remote areas such as coastal areas, mountains and northwest China. The complex terrain conditions increase the difficulty of wind energy utilization. As the main equipment currently using wind power generation, wind turbines occupy a large area, have complex structures, require high cut-in wind speed, are difficult to miniaturize, and are difficult to use breeze to generate electricity, and have many limitations....

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a power generation device based on fluid-solid coupling vortex-induced vibration to solve the problem of the vortex shedding frequency changing momentarily in the prior art

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