摘要
燃气轮机普遍在中低负荷下效率降低,为提高非设计点效率,燃气轮机–电机混合电推进技术已成为飞机等动力的主流发展趋势。本文提出基于高、低压轴变功率提取的混合电推进方案,通过引入高、低压轴功率提取控制变量,实现高、低压轴转速与发动机负荷解耦,优化非设计点工况下的部件匹配。通过部件级仿真模型研究基于变功率提取的燃气轮机解耦控制策略,特定工况下燃油消耗率降低了12.2%,燃烧室出口总温降低了13.14 K。
The efficiency of gas turbine generally deteriorates at the condition of medium or low load.In order to acquire higher off-design efficiency,the hybrid electric propulsion system based on gas turbines and electric machines becomes a mainstream development trend of the aero and other power system.The hybrid electric propulsion scheme based on variable power offtakes from highand low-pressure shafts is proposed in this paper.The power offtakes of high-and low-pressure shafts are introduced as control variables to decouple the rotational speeds of high-and low-pressure shafts from the gas turbine load and optimize the component match under off-design working conditions.The component-level simulation model is utilized to investigate the decoupling control strategy based on variable power offtakes for gas turbines.Under some working conditions,the specific fuel consumption is decreased by 12.2%,the combustor exit total temperature is decreased by 13.14 K.
作者
王涛
张华良
张郁
尹钊
张贤文
钱叶剑
WANG Tao;ZHANG Hualiang;ZHANG Yu;YIN Zhao;ZHANG Xianwen;QIAN Yejian(School of Automotive and Transportation Engineering,Hefei University of Technology,Hefei 230009,China;Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2022年第12期3292-3299,共8页
Journal of Engineering Thermophysics
基金
国家自然科学青年科学基金(No.52102433)
合肥工业大学青年教师科研创新启动专项A项目(No.JZ2021HGQA0236)。
关键词
燃气轮机
混合电推进
变功率提取
部件级仿真模型
解耦控制
gas turbine
hybrid electric propulsion
variable power offtake
component-level simulation model
decoupling control
