【摘要】 以多P-N结构成的半导体热电装置为研究对象,通过对热电装置模型的简化,并考虑材料参数随温度变化的实际情况,建立了热电效率随尺寸变化的数学模型。分析得出了影响热电装置热电效率的尺寸参数,为优化分析确定了设计变量和状态变量,并使有限元优化分析得到了简化。借助ANSYS优化分析模块,计算出了热电装置的最优化尺寸方案。更多还原

【Abstract】 The dimension of a multi-couple semiconductor thermoelectric devices as a generator was investigated.The model of thermoelectric devices was simplified,and a mathematical model of thermoelectric efficiency which changes with the geometrical parameters was established.This model takes into account the effect which material parameters change along with temperature.The geometrical parameters which influence thermoelectric efficiency were given by analyzing the mathematical model.So,the design variables and the state variables are determined,and the finite element optimization design is simplified.By means of finite element analysis software,an optimum geometrical scheme of thermoelectric device was obtained through calculation.更多还原