基于MPPT算法的温差发电回收效率研究  

Research on recovery efficiency of thermoelectric generation based on MPPT algorithm

作　　者：周卫琪[1,2] 张军波 罗丁 汪若尘[1,2] ZHOU Weiqi;ZHANG Junbo;LUO Ding;WANG Ruochen(School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China;Automotive Engineering Research Institute,Jiangsu University,Zhenjiang Jiangsu 212013,China)

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]江苏大学汽车工程研究院,江苏镇江212013

出　　处：《电源技术》2021年第8期1066-1069,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金面上项目(51977100)。

摘　　要：针对目前汽车尾气温差发电效率低的问题,通过搭建温差发电实验平台获取温差发电模型,验证最大功率点追踪(MPPT)算法的可行性。分析热电片的开路电压与温差的工作特性,并绘制负载特性曲线,结合改进的二分梯度MPPT控制算法,以提高温差发电回收效率。通过Matlab/Simulink仿真结果表明:相比于传统开路电压法(OCV)和扰动观察法(P&O),提出的MPPT算法在跟踪精度和速度上实现了较大的提升,对后续温差发电实验及算法研究可提供一定的指导。In view of the low power generation efficiency of the current automobile tail temperature difference,the thermoelectric power generation model is obtained by building a thermoelectric power generation experimental platform to verify the feasibility of the maximum power point tracking(MPPT)algorithm.By building a test platform,analyzing the operating characteristics of the open circuit voltage and temperature difference of the thermoelectric sheet,and drawing the load characteristic curve,combined with the improved bipartite gradient MPPT control algorithm,to improve the recovery efficiency of thermoelectric power generation.The Matlab/Simulink simulation results show that:compared with the traditional open circuit voltage method(OCV)and perturbation and observation method(P&O),the MPPT algorithm proposed in this paper achieves a greater improvement in tracking accuracy and speed,and provides certain guidance for subsequent thermoelectric power generation experiments and algorithm research.

关 键 词：温差发电 最大功率点追踪 二分梯度法 

分 类 号：TM913[电气工程—电力电子与电力传动]