Design And Analysis Of The Thermoelectric Micro-generator

Thermoelectric micro-generator is a device that provides difference in temperature and can convert directly heat energy to electricity employing seeback effect of semiconductor. It has many advantages such as high reliability, no motive part, no pollution, and quiet. With the appearances of high performance the thermoelectric material, the application scope of it expands.Introduced research of thermoelectric micro-generator in the world, we study the thermoelectric properties of the thermoelectric device and the thermoelectric micro-generator's design method, design the practical device, and optimize the design by emulation. The dissertation is divided into introduction, relational theories, the research of the thermoelectric device, the design of thermoelectric micro-generator, emulation and the summarization and expectation.In introduction, we expatiate the development of the research in semiconductor thermoelectric materials and thermoelectric micro-generator. We also explain the part the research's source, research content.Relational theories introduce the fundamental principle of thermoelectric effects, performance parameters of thermoelectric material and theory of heat transfer.The research of the thermoelectric device deduces the practical model from the theoretical model. By experiment of the different number of the pair of thermoelectric unit with same length and the same number of that with different length, analyze the thermoelectric performance and the effect of the contact.The design of thermoelectric micro-generator gives a few design plans of the three parts of thermoelectric micro-generator, realizes several thermoelectric micro-generator with different size and tests the output.Emulation introduces ANSYS software, analyzes stable heat conduction of thermoelectric device and transient heat conduction of thermoelectric micro-generator by finite element method (FEM), and provides calculation and optimization for further design and analysis.At the end of dissertation, it is summed up the work and brought up the deeper research aim.