摘要
本文研究了基于离心压缩机的飞机燃料电池空气管理系统。离心式空气压缩机将高速旋转的动能转化为压力,具有体积小、重量轻的优点。通过建立离心压缩机高空环境模型,研究其在高空环境下的工作特性,分析高度变化对压力、流量的影响,得出工作区间内高度、压力、流量以及转速之间的特性曲线及耦合特性。采用动态模型分析了在高度变化时,压缩机压力、流量及转速的动态特性。基于一个用于氢燃料电池的1k W高速离心式压缩机,对其进行了建模、仿真,并验证了离心空气压缩机在高空环境下的压力与流量工作特性。
This paper studies the air management system based on a centrifugal compressor for the fuel cells in the aircraft. Extensively applied for industry centrifugal compressors converting the kinetic energy of the air into the increase of pressure have the advantage of compactness. A centrifugal compressor model in high altitude was developed and working characteristics were analyzed. The influence of the altitude variation to the air pressure and air flow is investigated. The relationship and coupling property of altitude, air pressure, air flow and speed were obtained. The dynamic characteristics of the air pressure, air flow and speed were analyzed using the dynamic model. A lkW high speed centrifugal compressor model for fuel cells was developed and simulated. The air pressure and air flow dynamics are verified based on the developed model.
出处
《航空科学技术》
2017年第2期64-68,共5页
Aeronautical Science & Technology
基金
国家自然科学基金(51507143)
航空科学基金(2014ZB53018)~~
关键词
离心压缩机
高空
流量
压力
转速
centrifugal compressor
high altitude
air flow
air pressure
speed
