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A Theoretical Research and Innovative Design of Wind Energy Converting Device with Piezoelectric Materials

Author: ZhangCunE
Tutor: MuAnLe
School: Xi'an University of Technology
Course: Mechanical Design and Theory
Keywords: piezoelectric oscillator wind energy conversion device windmill device ANSYS software
CLC: TM614
Type: Master's thesis
Year: 2009
Downloads: 114
Quote: 0
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Abstract


In recent years, with the development of communication technology, human beings are increasing level of electricity requirement. At the same time, human beings are improving awareness of environmental protection and enhancing the emissions standards strictly Therefore, the academia has been concerned to electrical energy and the environment extensively. Because of the inconvenience of power supply through power networks in the remote areas such as the forest, roads, mountains and so on the communication technology applications, the batteries have been used to provide the power for communications equipment. However, the battery-powered solution is only resolves temporary needs and is not a long-term power supplied, on the other hand, the batteries contain the harmful substances which can pollute environment. Thus, a piezoelectric device made of piezoelectric materials by the piezoelectric effect can resolve those communication problems that power can not be provided and the battery is replaced difficultly in the remote area. The principle is that piezoelectric material can vibrate to generate electricity under the external force, so it is feasible that the environment wind as an excitation source forces piezoelectric material to vibrate for generating electricity. Simultaneity, the wind energy can be converted to electrical energy, which is the role of energy saving and environmental protection, in addition, it provides an micro-mW power to substitute for the conventional battery for small or micro-wireless measuring instruments in the wild remote areas and is an ideal renewable energy battery. According to the technology of piezoelectric power generation in this article, a new type of wind energy conversion device has been proposed based on the piezoelectric effect, and its working principle and characteristics has been explained theoretically.The main contents of the thesis are as follows:(1)Theoretical Analysis of piezoelectric power device:Based on mechanics of materials, dynamics and piezoelectric, to calculate the vibration characteristics and voltage characteristics of cantilever piezoelectric oscillator in piezoelectric generator, it is the core of wind energy conversion device in accordance with the basic knowledge of piezoelectric power generation and wind power generation.(2)Structure design of new type of wind energy conversion device:A new type of wind energy conversion device based on piezoelectric material is designed by SolidWorks software.(3)Working principle of wind energy conversion device:The first program is that the wind energy captured by windmill is passed to piezoelectric devices through the rotation axis, and the piezoelectric device rotates with the rotation axis. After the ball in piezoelectric generator hit free-end of the cantilever beam, the piezoelectric chip and the cantilever beam vibrate transversely together in order to convert the wind energy to electric energy. The second program is that using the principle of cylindrical cam windmill provides forced amplitude for piezoelectric oscillator to generated charges in order to the wind energy is converted to electrical energy.(4)Simulation and analysis of cantilever-type piezoelectric oscillator:After the modal analysis and static analysis of the piezoelectric oscillator has been done by ANSYS software, the frequency and the vibration patterns of piezoelectric oscillator are obtained, at the same time, the static analysis the relations which is voltage produced by piezoelectric oscillator with force of the piezoelectric oscillator’s free-end and the size parameters.(5)The output performance analysis of wind energy conversion device:To analysis the relationship which is between output power of wind energy conversion device and the wind speed limit when the charge can be produced.

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CLC: > Industrial Technology > Electrotechnical > Power generation, power plants > Variety of power generation > Wind power
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