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摘要:
全电飞机受限于锂电池能量密度难以满足长航程需求,而增程式飞机通过“电主油辅”架构平衡了环保性与续航里程,成为航空低碳化的重要过渡方案。基于此,聚焦增程式技术路径,系统性对比分析5种典型混合动力架构,明确了增程式定义与工作原理;梳理了国内外代表性增程式机型的技术路线;深入探讨了支撑其发展的高功率密度永磁电机、智能能量管理系统、高效热管理系统及高压局部放电监测与防护技术的进展与挑战。明晰了增程式技术的当前格局与核心壁垒,为全电飞机长航程适应性技术迭代提供了重要依据,并可为航空产业低碳转型战略制定提供参考。
Abstract:All-electric aircraft face limitations in achieving long range due to the energy density constraints of current lithium batteries. Range-extended aircraft, employing an "electric-dominant, fuel-supplement" powertrain architecture, offer a balance between environmental benefits and extended range, positioning them as a crucial transitional solution for aviation decarbonization. This review focuses on the range-extended technology pathway. It provides an overview of the technological roadmaps adopted by representative range-extended aircraft models both domestically and internationally; it compares and analyzes five typical hybrid powertrain architectures, elucidating the definition and operational principles of the range-extended concept. It explores the advances and challenges of key enabling technologies that are driving its development, including high-power-density permanent magnet motors, intelligent energy management systems, efficient thermal management systems, and high-voltage partial discharge monitoring and protection technologies. This review clarifies the current landscape and core barriers of range-extended technology. It provides essential insights to inform the technological evolution towards long-range adaptability for all-electric aircraft and serves as a valuable reference for formulating strategies aimed at the low-carbon transition of the aviation industry.
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表 1 混合动力架构优缺点总结
Table 1. Summary of the advantages and disadvantages of hybrid power architectures
动力架构类型 优点 缺点 串联动力架构 内燃机高效;氢燃料支持;控制简单 能量损耗大;设备增重 并联动力架构 快速供能;独立工作可靠 控制逻辑复杂;策略设计难 混联动力架构 适应任务;动态调配能量 质量大幅上升;切换难控;优化复杂 涡电动力架构 结构简单轻;直接转换效率高 需缓冲装置;排放不减;低负载效率低 部分涡电动力架构 优化能量分配 系统复杂;控制难;排放不减;推力不均衡 表 2 国内外典型增程式飞机关键特性对比[12,19-26]
Table 2. Comparison of key characteristics of typical extended-range aircraft at home and abroad[12,19-26]
机型 类型 座位数 关键动力参数 航程性能 项目状态 E-Fan X 支线验证机 100 发电机:2.5 MW,电机:2 MW 项目终止(2020年) Zunum Aero ZA10 支线客机 12 增程器:500 kW,电机:2×500 kW 增程后: 1126 km地面试飞(2019年) Electra Aero EL-9 eSTOL 9 电机:8×150 kW 纯电:611 km,增程后: 2037 km已获订单,计划首飞(2027年) Nexus 6HX eVTOL 5 增程器:600 kW,电机:6×100 kW 增程后:240 km 项目终止(2020年) 锐翔 RX1E-A 轻型飞机 2 增程器:30 kW,电机:30 kW 增程后:300 km+ 已交付(2025年) DA36 E-Star 滑翔机改装 2 发电机:30 kW,电机:70 kW 增程后:900 km(第二代) 第二代完成首飞 (2013年) eDA40 轻型飞机 4 发电机:110 kW,电机:2×80 kW 增程后: 1333 km验证飞行 (2018年) Panthera hybrid 轻型飞机 4 发电机:100 kW,电机:145 kW 增程后: 1200 km已试飞验证 (2021年) e-Genius 验证机 2 电机:80 kW 纯电:400 km,增程后: 1280 km已完成载人飞行测试 (2021年) 电机 功率密度 效率 功率因数 扭矩脉动 鲁棒性 高速性能 热管理 可操控性 经济性 应用场景 高温超导电机 + + + + 0 - - - - - + - - 推进器、发电机 永磁同步电机 + + + + 0 0 0 0 + 0 推进器、发电机 绕线同步电机 0 - + 0 - - - + + - 推进器、发电机、启动器 开关磁阻电机 0 + - - + + + + + + + + 发电机、启动器 感应电机 - - - 0 + + 0 + + + 启动器 注:“+”表示优势; “0”表示中等; “-”表示劣势。 -
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