单气缸自由活塞膨胀机-直线发电机试验研究

doi:10.3969/j.issn.1000-1093.2018.11.002

兵工学报 ›› 2018, Vol. 39 ›› Issue (11): 2092-2099.doi: 10.3969/j.issn.1000-1093.2018.11.002

单气缸自由活塞膨胀机-直线发电机试验研究

田亚明^1,2，张红光^1,2，李健^1,2，赵腾龙^1,2，王焱^1,2

(1.北京工业大学环境与能源工程学院, 北京 100124； 2.北京电动车辆协同创新中心，北京 100124)

收稿日期:2018-03-22 修回日期:2018-03-22 上线日期:2018-12-25
通讯作者: 张红光（1970—），男，教授，博士生导师 E-mail:zhanghongguang@bjut.edu.cn
作者简介:田亚明（1992—），男，硕士研究生。 E-mail： tym6532@163.com
基金资助:
国家自然科学基金项目(51776005、51376011)；北京市自然科学基金项目(3152005)；北京工业大学第十六届研究生科技基金重点项目（ykj-2017-00018）

Experimental Investigation of a Novel Single Cylinder Free Piston Expander-linear Generator

TIAN Ya-ming^1,2, ZHANG Hong-guang^1,2, LI Jian^1,2, ZHAO Teng-long^1,2, WANG Yan^1,2

(1.College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China；2.Collaborative Innovation Center of Electric Vehicles in Beijing， Beijing 100124, China)

Received:2018-03-22 Revised:2018-03-22 Online:2018-12-25

摘要/Abstract

摘要： 为了提高内燃机能量利用率，自主研发了1台可用于有机朗肯循环余热回收系统的单气缸自由活塞膨胀机-直线发电机(FPE-LG)。在压缩空气试验平台上实现了FPE-LG的连续稳定运行，验证了单气缸FPE-LG工作原理的可行性。在大量试验基础上，分析了驱动压力、外接负载电阻对单气缸FPE-LG输出特性的影响机制。研究结果表明：FPE-LG输出功率呈现较为规律的正弦波动，对于该试验样机而言，当驱动压力为0.6 MPa、外接负载电阻为50 Ω时，峰值输出功率可达到58.7 W；提高驱动压力可以明显提高均方根电压和峰值电流，但驱动压力的提高对FPE-LG自由活塞膨胀机膨胀功-直线发电机输出电能转换(简称功-电转换)效率影响很小；当外接负载电阻小于60 Ω时，随着外接负载电阻的增大，FPE-LG的功-电转换效率从13.4%上升到24.7%；对于该FPE-LG而言，当外接负载电阻为60 Ω时，单气缸FPE-LG的实际膨胀功最大，功-电转换效率最佳。

关键词: 自由活塞膨胀机-直线发电机, 单气缸, 余热利用, 自由活塞膨胀机膨胀功-直线发电机输出电能转换效率, 性能试验

Abstract: A single cylinder free piston expander-linear generator (FPE-LG) used for organic Rankine cycle (ORC) waste heat recovery system is developed to improve the energy efficiency of the internal combustion engines. FPE-LG can operate continuously and stably under the condition of high driven pressure, which indicates that the working principle of single cylinder FPE-LG is feasible. The effects of driven pressure and external load resistance on the output characteristics of single cylinder FPE-LG are investigated through experiment. The experimental test results show that the power output of FPE-LG exhibits a regular sinusoidal fluctuation, and the peak power output can reach 58.7 W when the driven pressure is 0.6 MPa and the external load resistance is 50 Ω. The increase in driven pressure can increase the RMS voltage and peak current significantly. However, it has little effect on the power-electric conversion efficiency of FPE-LG. When the external load resistance is less than 60 Ω, the power-electric conversion efficiency η of FPE-LG increases from 13.4% to 24.7% with the increase in external load resistance. When the external load resistance is 60 Ω, actual expansion work (AEW), W_AEW, of the single cylinder FPE-LG is the largest and the power-electric conversion efficiency is the best. The continuous increase in the external load resistance value has little effect on W_AEW and η. Key

Key words: freepistonexpander-lineargenerator, singlecylinder, wasteheatrecovery, power-electricconversionefficiency, performanceexperiment

中图分类号:

TK115

田亚明，张红光，李健，赵腾龙，王焱. 单气缸自由活塞膨胀机-直线发电机试验研究[J]. 兵工学报, 2018, 39(11): 2092-2099.

TIAN Ya-ming, ZHANG Hong-guang, LI Jian, ZHAO Teng-long, WANG Yan. Experimental Investigation of a Novel Single Cylinder Free Piston Expander-linear Generator[J]. Acta Armamentarii, 2018, 39(11): 2092-2099.

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第39卷第11期
2018 年11月兵工学报ACTA
ARMAMENTARIIVol.39No.11Nov. 2018

单气缸自由活塞膨胀机-直线发电机试验研究

Experimental Investigation of a Novel Single Cylinder Free Piston Expander-linear Generator

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