航空学报2025，Vol.46Issue(15)：82-102,21.DOI:10.7527/S1000-6893.2025.31513
面向eVTOL/eSTOL的分布式动力能源系统高精度建模与仿真
High-precision modeling and simulation of distributed propulsion energy systems for eVTOL/eSTOL
摘要
Abstract
Addressing the challenges posed by drastic power load variations and high losses in complex transmission systems for distributed electric propulsion aircraft such as electric Vertical Take-Off and Landing/electric Short Take-Off and Landing(eVTOL/eSTOL),this paper proposes a high-precision power and energy system modeling and evalua-tion method applicable to the entire flight process of unmanned aerial vehicles(UAVs).We first establish an energy system model based on a second-order RC battery model,identifying key parameters through a particle swarm algo-rithm using battery discharge experimental data,and construct a propulsion system model including propellers,mo-tors,Electronic Speed Controllers(ESCs),and transmission cables.Subsequently,a working state calculation framework for the UAV power and energy system based on an implicit function equation system is introduced and vali-dated against experimental data.Finally,a simulation assessment of the power and energy system is conducted for a specific project involving a distributed electric propulsion UAV,alongside the optimization design of the transmission cable layout.The results indicate that both the voltage prediction error of the energy system and the errors in the sys-tem state calculation framework are smaller than 2%.The model accurately reflects the operational state changes of each component throughout the entire flight process,and the optimized transmission cable layout reduces voltage loss by 17.2%and average power loss by 16.36%,thereby verifying the accuracy and validity of the proposed method.关键词
分布式电推进/动力能源系统建模/二阶RC模型/工作状态计算框架/输电线缆布局优化Key words
distributed electric propulsion/power and energy system modeling/second-order RC battery model/working state calculation framework modeling/transmission cable layout optimization分类
航空航天引用本文复制引用
孙三亚,邵壮,周洲,王科雷,宗嘉..面向eVTOL/eSTOL的分布式动力能源系统高精度建模与仿真[J].航空学报,2025,46(15):82-102,21.基金项目
特色学科基础研究项目(G2022WD) （G2022WD）
航空科学基金(2024Z006053001) Basic Research Project for Featured Disciplines of China(G2022WD) （2024Z006053001）
Aeronautical Science Foundation of China(2024Z006053001) （2024Z006053001）
