基于Simulink和GT-Power的自由活塞发动机仿真  

Simulation of Free Piston Linear Generator based on Simulink and GT-Power

作　　者：林滨滨[1] 肖进[1] 张磊[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《内燃机与动力装置》2017年第1期17-23,共7页Internal Combustion Engine & Powerplant

基　　金：国家自然科学基金项目(51376116)

摘　　要：自由活塞发动机(Free Piston Linear Generator,以下称FPLG)具有结构简单,效率高,适应燃料多的优点。由于取消了曲柄连杆机构,活塞的位置控制是实现自由活塞发动机稳定运行的关键。本文基于Simulink建立了机械-流体-电控耦合系统模型,并用GT-Power及样机倒拖试验数据进行流体部分的验证。针对FPLG的非稳定状态建立了仿真模型,着重研究FPLG运行过程中换气,燃烧过程的不稳定情况,及其对FPLG运行特性的影响。Free Piston Linear Generator （FPLG） has the advantages of simple structure, high efficiency, and applicable to a variety of fuels. Due to the lack of the crankshaft and flywheel, the control of piston position is the key to achieving stable operation of FPLG. In this paper, a model of mechanical-fluid-electrical coupling system is built based on Simulink. GT-Power as well as proto- type data is used to carry out the verification of fluid part. The model is modified to simulate the un- steady state of the engine, and the instability of the gas exchange and combustion process, and their influences on the operation of the FPLG.

关 键 词：自由活塞 一维仿真 直线电机 稳定性 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]