热声发电系统最大声功捕获特性分析  

Analysis for maximum acoustic power capturing of thermoacoustic electric generation system

作　　者：张健[1,2] 夏加宽[1] 王雪[3] 何新 李文瑞[1] ZHANG Jian;XIA Jia-kuan;WANG Xue;HE Xin;LI Wen-rui(School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China;School of Electrical Engineering,Yingkou Institute of Technology,Yingkou 115014,China;Electric Motor Research Institute,Kede Numerical Control Co.Ltd.,Dalian 116600,China)

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870 [2]营口理工学院电气工程学院,辽宁营口115014 [3]科德数控股份有限公司电机研究所,辽宁大连116600

出　　处：《沈阳工业大学学报》2021年第2期132-137,共6页Journal of Shenyang University of Technology

基　　金：国家自然科学基金项目(51377108);辽宁省教育厅科学研究经费项目(L2020007).

摘　　要：为了使热声发电系统实现最大声功捕获,提出一种基于热声发电系统声学阻抗设计方法,通过选择合适弹簧刚度系数和谐振电容参数使热声发电系统声学阻抗匹配捕获声功最大.根据相似定理和热声发电系统声学阻抗流源机理,采用类电路相量法建立声功捕获模型,推导声功函数与各元件参数关系.以直线发电机安全运行为约束条件,推导出直线发电机弹簧刚度系数和谐振电容设计表达式,通过数值计算和实验验证了优化设计方法的合理性.In order to achieve the maximum acoustic power capturing in thermoacoustic electric generation system(TAEGS),a design method based on the acoustic impedance of TAEGS was proposed.Through selecting appropriate spring stiffness factors and resonant capacitance parameters,the maximum acoustic power capturing for the acoustic impedance matching of TAEGS was realized.According to the similarity theorem and the mechanism of acoustic impedance current source of TAEGS,a similar circuit phasor method was used to establish an acoustic power capturing model,and the relationship between the acoustic power function and the parameters of each component was deduced.Taking the safe operation of linear generator as constraint conditions,the designing expressions of spring stiffness coefficient and resonant capacitance of linear generator were derived.The rationality of optimization design method was verified by numerical calculation and experiments.

关 键 词：热声发电系统 永磁直线发电机 阻抗匹配 最大声功捕获 机械谐振 热声发动机 分布式能源 刚度系数 

分 类 号：TM615[电气工程—电力系统及自动化]