多电全电飞机发动机 波音787 All More Electric Aircraft

高压可变电源
自动 配电技术 电力作动技术 多电发动机技术 整体启动发电技术
提高功率密度和电源效率 ，减小体积 ，可靠性髙、 结构简单，实现余度供电及不中断供电
提高系统的性能、容错能力和可靠性 提高生存能力和可维护性 优化二级能源系统 改善发动机适用性 ，获得较大的电功率
集成组合动力装置技术（IPU）
11
传统环境控制系统（ECS）
B787电环控系统（E-ECS）
Beijing University of Aeronautics and Astronautics
12
表2 ECS与E-ECS比较
Conventional ECS Engine bleed air delivered at 30 PSI / 400 °F. Electric ECS Electrical compressors delivered at 15 PSI / 200 °F determined by minimum temperature of ozone converter. Air cooled by air conditioning pack [pri & sec HEx + Air Cycle Machine (ACM)], requires greater ram air mass flow. Cooled air enters cabin at 11.8 PSI / 60 °F. System only delivers the necessary air ‐ temperature limited by ozone converter characteristics. Reduced interface with engine.
Beijing University of Aeronautics and Astronautics
2
1
Beijing University of Aeronautics and Astronautics
3
表1 AEA/MEA技术研究及验证
时间
80年代以后
研究 内容
分布式功率管理技术中主要研究的是固态功率控制器 电作动刹车系统中主要研究的是机电作动器 直升机电动作动器技术主要研究的是直升机电传控制和电动作动器 大型机电作动器系统和可靠电动作动系统主要研究具有容错功能的永磁无刷电机和相应的控制器 变频发电机和频率转换器
分布式供能方式
16
The level of power of the B787 ram air turbine (RAT) has increased dramatically
Compared with B767 single 90 to 120 kVA per engine Expanded electrical system generating twice as much electricity than conventional aircraft Center hydraulic system is powered by two large 30 GPM / 5000 PSI electric‐motor driven hydraulic pumps (230 VAC), compared with B767 two 7 GPM / 3000 PSI electric
9
传统机械恒定频率发电机
新型可变电压可变频率发电机
Beijing University of Aeronautics and Astronautics
Biblioteka Baidu
10
传 统 方 式 的 能 源 耗 散 多 电 方 式 的 能 源 回 收
Beijing University of Aeronautics and Astronautics
All/More Electric Aircraft Engine & Airframe Systems Implementation
报告人：蒋斌 学号：SY1505508
Beijing University of Aeronautics and Astronautics
1
背景介绍
应用现状 前景展望
Beijing University of Aeronautics and Astronautics
19
Thank you!
Beijing University of Aeronautics and Astronautics
20
Air cooled by air conditioning pack [pri & sec HEx + Air Cycle Machine (ACM)].
Cooled air enters cabin at 11.8 PSI / 60 °F. Much energy wasted as bleed air is delivered at excessive pressure and temperature.
极大地减 轻系统重 量 ，增 加飞机的可靠性和维护性
Beijing University of Aeronautics and Astronautics
14
Beijing University of Aeronautics and Astronautics
15
传统供能方式
Beijing University of Aeronautics and Astronautics
Beijing University of Aeronautics and Astronautics
17
表4 B787技术革新
气
Beijing University of Aeronautics and Astronautics
18
3
Embedded generator
Open rotor engine or propfan
传统发动机
多电发动机
04
Reduce thrust
Beijing University of Aeronautics and Astronautics
6
05
Increase turbine entry temperature (TET)
06
Increase aircraft drag (profile and induced)
90年代末
C-141“电运输星”上验证了机电作动器驱动副翼的作用和效能
F/A“系统研究飞机” 上进行了电静液作动器用于水平安定面的 验证 F16验证机上进行内装式开关磁 阻启动发电机 、综合电源装置的地面和机上试验
21世纪 美国提出 “秃鹰 计划”，开始研制一款全电高空长航时无人机
Beijing University of Aeronautics and Astronautics
Physical interface with engine and potential for distributing air flow.
Beijing University of Aeronautics and Astronautics
13
表3 AEA/MEA关键技术及优势
关键技术 电力电子与电机驱动 技术优势 减轻重量
引气对涡轮进气温度的影响
7
Beijing University of Aeronautics and Astronautics
多电飞机二次电源系统分布
Beijing University of Aeronautics and Astronautics
8
传统飞机
多电飞机
Beijing University of Aeronautics and Astronautics
4
01
Increase both complexity and weight
2
02
Increase maintenance and operational costs
5
Beijing University of Aeronautics and Astronautics
03
Increase Specific Fuel Consumption