基于等效时间的混合储能系统高功率密度优化配置

doi:10.7527/S1000-6893.2018.22129

Abstract

Abstract: With the increasing applications of power electric devices in More Electric Aircraft (MEA) power system, the electric load power in MEA displays fluctuating characteristics. The Hybrid Energy Storage System (HESS) is selected to smooth load power fluctuation. To reduce the weight of HESS, a method of optimal configuration of high power density HESS is proposed. Firstly, to build the relationship between the load power and storage cells, a concept of Equivalent Time (ET) is put forward and is used as the basis to select the energy storage system type by comparing the equivalent times. Further, the space vector is proposed:to determine the optimal cell and the cutoff frequency, the load energy is synthesized by the energy storage medium vector and the power storage medium vector, realizing the high-power density configuration of HESS. Meanwhile, the HESS capacity is calculated from the energy constraints and power constraints. Finally, the feasibility and correctness of the proposed method in this paper has been verified through the example configuration and simulation analysis.

Key words: more electric aircraft, hybrid energy storage, high power density, equivalent time, space vector

CLC Number:

V19
TM61

CHENG Long, ZHANG Fanghua, XIE Min, WANG Yu, ZOU Hualei. High power density optimal configuration for hybrid energy storage system based on equivalent time[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(10): 322129-322129.

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High power density optimal configuration for hybrid energy storage system based on equivalent time

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