多电飞机高压直流并联供电系统发展现状与关键技术

doi:10.7527/S1000-6893.2020.24069

Abstract

Abstract: The integration of onboard secondary energy is gradually realized by the More Electric Aircraft (MEA), improving the efficiency, reliability, and safety of energy utilization. The High-Voltage DC (HVDC) power supply system with outstanding advantages such as lightweight, low loss, and high reliability can, in principle, realize easier parallel operation of the Electric Power System (EPS), enabling the expansion of the power supply capacity in a multi-engine/multi-generator layout, and hence uninterrupted power supply. In addition, both the electric power quality and reliability of the EPS are improved. The characteristics and advantages of the HVDC EPS are analyzed in this paper, followed by a summary of the research status and the key technical issues of the HVDC parallel EPS. A dual-channel HVDC parallel EPS based on novel doubly salient brushless DC generators is proposed and implemented to achieve current sharing control of the system, and the dynamic responses during sudden load changes, paralleling in, and splitting out are examined. The research has proved that the HVDC parallel EPS provides good steady-state accuracy and dynamic performance, exhibiting important value in the MEA or All Electric Aircraft (AEA) applications. The dynamic behaviors, the modeling method, and the protection logic of the HVDC parallel EPS still require further research.

Key words: more electric aircraft, HVDC parallel electric power systems, aircraft power supply systems, current sharing control, energy regeneration, stability analysis, fault protection

CLC Number:

V424.2

ZHANG Zhuoran, XU Yanwu, YU Li, LI Jincai, XIA Yiwen. Parallel HVDC electric power system for more-electric-aircraft: State of the art and key technologies[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(6): 624069-624069.

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Parallel HVDC electric power system for more-electric-aircraft: State of the art and key technologies

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