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Wind-energy piezoelectric conversion generator by using vortex-induced vibration

A technology of piezoelectric conversion and vortex-induced vibration, which is applied in the direction of battery circuit devices, circuit devices, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve the problem of low utilization rate of wind energy, affecting power generation efficiency, wind speed, etc. Higher requirements and other issues, to achieve the effect of simple structure, sufficient driving force and wide application range

Inactive Publication Date: 2013-04-24
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have the disadvantages of low utilization rate of wind energy and high requirements on wind speed.
A single use of wind blowing through the piezoelectric sheet may cause the piezoelectric sheet to stop vibrating due to uneven force under certain conditions, thereby affecting power generation efficiency

Method used

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  • Wind-energy piezoelectric conversion generator by using vortex-induced vibration
  • Wind-energy piezoelectric conversion generator by using vortex-induced vibration
  • Wind-energy piezoelectric conversion generator by using vortex-induced vibration

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the drawings and specific embodiments.

[0036] Such as figure 1 As shown, the wind energy piezoelectric conversion power generation device using vortex-induced vibration includes a housing 1, an air collecting duct 2, a bluff body 3, a support frame 4, a piezoelectric sheet 5, a box body 6, an amplifying sheet 13, and a box The electric bridge 7, the DC voltage stabilizer 8, the battery 9, the controller 11 and the inverter 12 in the body 6.

[0037] The casing 1 has a cylindrical structure, and one end of the casing 1 of the cylindrical structure is an air inlet, and the other end is an air outlet. figure 1 Among them, the upper end of the casing 1 is an air inlet, the lower end of the casing 1 is an air outlet, and the air outlet is designed as a divergent nozzle to facilitate air outlet.

[0038] The air collecting duct 2 is a horn structure, such as figure 2 As shown, the small port of th...

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Abstract

The invention discloses a wind-energy piezoelectric conversion generator by using vortex-induced vibration. The generator comprises a shell, an air duct, bluff bodies, a support frame, piezoelectric plates, a box body, an electric bridge, a direct-current voltage regulator and a storage battery, wherein the electric bridge, the direct-current voltage regulator and the storage battery are arranged in the box body; the air duct is connected with an air inlet of the shell; a plurality of bluff bodies are arranged near the air inlet in the shell; the support frame is installed in the shell, and at least one piezoelectric plate is arranged on the support frame; the free ends of the piezoelectric plates correspond to the internal concave arcs of the bluff bodies; the metal electrodes of the piezoelectric plates are connected with the electric bridge via leads; the electric bridge is used for rectifying alternating current into direct current and transmitting the direct current to the direct-current voltage regulator; and the storage battery is used for storing the direct current output by the direct-current voltage regulator. The generator produces karman vortex street by bypassing reproducible and clean wind from the bluff bodies and then generates power through vibration by driving the piezoelectric plate with large energy density and high generating efficiency, thereby increasing the energy utilization rate, saving energy resources, implementing unmanned automatic control continuous self-power supply and protecting the atmospheric environment.

Description

Technical field [0001] The invention relates to a power generation device, in particular to a device that uses wind energy to generate a vortex street through a bluff body to drive piezoelectric materials to generate vortex-induced vibration power generation. Background technique [0002] Unmanned sensors are a relatively common research project worldwide. In remote areas and harsh environments, the use of batteries for power supply is extremely inconvenient and technically difficult. Therefore, designing a device that solves continuous and stable power supply in a smaller power range has strong practical significance and application value. [0003] The piezoelectric effect was discovered by the Curie brothers 100 years ago. If stress is applied to the piezoelectric material, a voltage difference will occur between the top and bottom of the piezoelectric sheet due to the piezoelectric effect, which is called the positive piezoelectric effect; Applying a voltage will cause the...

Claims

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Application Information

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IPC IPC(8): H02N2/18H02J7/00
Inventor 冉景煜王军雷黎柴佐丁林张力杨仲卿
Owner CHONGQING UNIV
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