【摘要】 涡轮混合供电系统是未来航空业新能源发展的关键方向之一。然而涡轮轴发动机转速控制特性与负载电气特性之间存在时间尺度差异，易造成供电电压波动。此外，随着飞机供电系统电力电子化程度的提升，高渗透率的非线性恒功率负载易引发涡轮轴发动机自激振荡,进而影响飞机供电系统稳定性。为此，本文针对涡轮发电机、储能系统串联混合供电系统，基于阻抗匹配理论提出了一种增强型虚拟阻抗下垂控制策略，利用储能单元对负载功率流中高频变化量进行平抑，达到弥补涡轮发电机输出功率动态响应低的问题，并解决了恒功率负载造成的自激振荡问题。所提出的方法在保证直流汇流条电压稳定性的同时,减少了涡轮机的转矩应力，拓展了使用寿命周期。本文详细阐述了所提出的控制策略和系统设计，并通过试验验证了理论分析。更多还原

【Abstract】 The turbogenerator-based hybrid power systems represent a pivotal direction in the development of nextgeneration energy solutions for the aviation sector. However, the turbine power generation system exhibits a timescale mismatch between the rotational speed control characteristics of the turboshaft engine and the electrical characteristics of the load, which can easily cause power supply voltage fluctuations. Additionally, with the increasing electrification of aircraft power systems, the high penetration of nonlinear constant power loads(CPL) can induce selfexcited oscillations in the turboshaft engine, thereby compromising the stability of the aircraft power system. To address these issues, this paper proposes an enhanced virtual Impedance Droop(VID) control strategy based on impedance matching theory for the series turbogenerator/energy storage system(TG/ESS) hybrid power supply system. The strategy leverages the energy storage unit to suppress high-frequency variations in load power flow, compensating for the slow dynamic response of the turbogenerator’s output power and mitigating the self-excited oscillations caused by constant power loads. The proposed method ensures DC bus voltage stability while reducing the torque stress on the turbine, thereby extending its service life. The paper provides a detailed explanation of the proposed control strategy and system design, and the theoretical analysis is validated through experimental results.更多还原