Stable Compression Ratio Control for Free-Piston Engine Generator

doi:10.7652/xjtuxb201405010

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Stable Compression Ratio Control for Free-Piston Engine Generator

更新时间：2025-07-09

- Stable Compression Ratio Control for Free-Piston Engine Generator
- Vol. 48, Issue 5, Pages: 56-60(2014)
- 作者机构：
  
  北京理工大学机械与车辆学院,北京,100081
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201405010
  CLC： TK441
- Online First：10 May 2014，
  
  Published：2014
- 稿件说明：
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Stable Compression Ratio Control for Free-Piston Engine Generator[J]. 2014, 48(5): 56-60.
DOI：

Stable Compression Ratio Control for Free-Piston Engine Generator[J]. 2014, 48(5): 56-60. DOI： 10.7652/xjtuxb201405010.

摘要

为解决自由活塞内燃发电机的稳定控制问题

根据能量守恒定律建立了连续运行过程周期能量转化与传递模型。通过数值仿真分析

获得了满足稳定运行的基本能量平衡条件

包括压缩能和系统能量余值方程

从而实现了周期能量余值和压缩能的稳定变化。以压缩比为目标建立了连续周期能量动态平衡的控制系统及策略

即以喷油量和压缩比为控制输出变量

采用比例-积分-微分控制器进行控制

进而实现了可控压缩比的连续稳定运转。研究结果表明:采用所建控制系统及策略后

自由活塞内燃发电机运行可靠、稳定; 压缩比在负载变化后出现短暂振荡

但经多个周期后恢复稳定

缸内峰值压力和运行频率具有相似的变化趋势

各参数变化均在可接受的范围内。

Abstract

To stably control free-piston engine generator

a model of energy conversation and transfer in continuous cycles was established. The essential energy balance conditions satisfying stable operation were constructed via numerical simulation

including the equation of the compression energy and system energy residual value

then the stability of cyclic energy residual value and compression energy were sequentially achieved. The control system and strategy for dynamic energy balance in continuous cycle were proposed

where the injection quantity and the compression ratio were taken as the control output variables

the proportion-integral-derivative controller was employed to drive the operation

and the continuously stable operation under the controllable compression ratio thus was realized. The results show that the free-piston engine generator operates reliably and stably under the control system and strategy. The compression ratio shortly oscillates once changing load

then gets back to the set value after undergoing several cycles. The peak pressure in-cylinder and operation frequency tend similarly and the parameters vary within the acceptable range.

关键词

Keywords

references

MIKALSEN R, ROSKILLY A P. A review of free-piston engine history and applications[J]. Applied Thermal Engineering, 2007, 27(14/15): 2339-2352.

ATKINSON C, PETREANU S, CLARK N, et al. Numerical simulation of a two stroke linear engine-alternator combination, SAE 1999-09-21[R]. Washington DC, USA: SAE, 1999.

MIKALSEN R, ROSKILLY A P. The control of a free-piston engine generator: part 1 Fundamental analyses[J]. Applied Energy, 2010, 87(4): 1273-1280.

XU Z, CHANG S. Prototype testing and analysis of a novel internal combustion linear generator integrated power system[J]. Applied Energy, 2010, 87(4): 1342-1348.

XIAO J, LI Q, HUANG Z. Motion characteristic of a free piston linear engine[J]. Applied Energy, 2010, 87(4): 1288-1294.

栾延龙, 李理光, 王哲, 等. 自由活塞发动机关键设计参数及其性能的仿真优化研究[J]. 内燃机工程, 2010, 31(2): 15-21.

LUAN Yanlong, LI Liguang, WANG Zhe, et al. Key design parameters and performance optimization of a free-piston engine based on simulation[J]. Chinese Internal Combustion Engine Engineering, 2010, 31(2): 15-21.

MAO J, ZUO Z, LI W. Multi-dimensional scavenging analysis of a free-piston linear alternator based on numerical simulation[J]. Applied Energy, 2011, 88(4): 1140-1152.

肖翀, 左正兴. 自由活塞发电机动力学过程的非线性模型[J]. 北京理工大学学报, 2008, 28(11): 966-969.XIAO Chong, ZUO Zhengxing. Nonlinear model and first order approximate solution of a free piston genera-tor[J]. Transactions of Beijing Institute of Technology, 2008, 28(11): 966-969.

MIKALSEN R, ROSKILLY A P. Predictive piston motion control in a free-piston internal combustion engine[J]. Applied Energy, 2010, 87(5): 1722-1728.

TIKKANEN S, VILENIUS M. Control of dual hydraulic free piston engine[J]. International Journal of Vehicle Autonomous Systems, 2006, 4(1): 3-23.

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