自由活塞膨胀机–直线发电机试验与仿真研究  

Experimental and Simulation Study of a Free Piston Expander-linear Generator

作　　者：许永红 童亮[1] 张红光[2] 侯孝臣 杨富斌[2] 刘荣 XU Yonghong;TONG Liang;ZHANG Hongguang;HOU Xiaochen;YANG Fubin;LIU Rong(College of Electrical and Mechanical Engineering,Beijing Information Science and Technology University, Haidian District,Beijing 100192,China;College of Environmental and Energy Engineering,Beijing University of Technology,Chaoyang District,Beijing 100124,China)

机构地区：[1]北京信息科技大学机电工程学院,北京市海淀区100192 [2]北京工业大学环境与能源工程学院,北京市朝阳区100124

出　　处：《中国电机工程学报》2018年第24期7391-7399,共9页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51575056,51776005,51376011);北京市自然科学基金面上项目(3152005)~~

摘　　要：将自由活塞膨胀机和直线发电机耦合成新型自由活塞膨胀机-直线发电机(free piston expander-linear generator,FPE-LG),用于小型车用有机朗肯循环(organic Rankine cycle,ORC)余热回收系统;基于压缩空气试验平台和Matlab/Simulink软件对FPE-LG进行试验和仿真研究。在相对低的进气压力和工作频率下,FPE-LG的运动特性和输出特性的试验与仿真结果吻合性较好,有效验证了仿真模型的正确性。进而利用FPE-LG仿真模型进行相对高压和高频的仿真研究,结果表明:进气压力和工作频率对FPE-LG的运动特性、输出特性和指示效率具有重要影响。当进气压力为1MPa,工作频率为15Hz,外接电阻阻值为9Ω时,FPE-LG的峰值功率约为676W。This paper presented a new free piston expander-linear generator (FPE-LG)for small-scale organic Rankine cycle (ORC)waste heat recovery system.A FPE-LG experimental test rig was developed and a simulation model based on Matlab/Simulink was established.The simulation model was validated with respect to the experimental results at relatively high intake pressure and operating frequency.Further investigation on the motion characteristics and output performance of FPE-LG were conducted with relatively high intake pressure and operating frequency based on the simulation model.The results show that the intake pressure and operating frequency have a great effect on the motion characteristics and output performance.The peak power output is 676W when the intake pressure,external load resistance,and operating frequency are 10bar,9Ω and 15Hz,respectively.

关 键 词：余热回收 有机朗肯循环 自由活塞膨胀机-直线发电机 输出特性 运动特性 

分 类 号：TK11[动力工程及工程热物理—热能工程]