摘要
针对多电飞机电力系统在负载功率快速波动时,母线电压调节能力差和功率分配问题,提出一种基于蓄电池和超级电容混合储能的多电飞机直流母线电压稳定控制策略。通过将线性自抗扰控制与二阶低通滤波算法相结合,将多电飞机电力系统功率波动分配给不同的储能单元。采用改进的下垂控制策略,实时调整各储能单元的输出电流。通过调整二阶滤波常数,对超级电容的工作区间进行控制,以平抑母线电压波动。仿真结果表明,该母线电压稳定控制策略可实现波动功率在储能单元之间的合理分配,延长储能元件使用寿命,更加快速、有效地平抑多电飞机电力系统的负载功率波动,实现母线电压稳定的目的。
Aiming at the problem of difference of regulating power of bus voltage and power distribution in more electric aircraft power system with fast fluctuation of load power,a DC bus voltage stability control strategy based on accumulator and super capacitor mixed energy storage is proposed.Based on the control strategy of linear disturbance rejection control and second-order low-pass filter algorithm,power fluctuation of more electric aircraft power system is distributed to different energy storage units.Based on the improved droop control strategy,the output current of each energy storage unit is adjusted in real time.By adjusting the second-order filter constant,the voltage of the supercapacitor is controlled to suppress voltage fluctuation.The simulation results show that the power distribution strategy can realize the reasonable distribution of fluctuating power between the energy storage units,prolong the service life of the energy storage elements,reduce the load power fluctuation of the more electric aircraft power system quickly and effectively,and realize the stability of the bus voltage.
作者
何欣凝
王鹤
王冠
张庆超
刘瑞
HE Xinning;WANG He;WANG Guan;ZHANG Qingchao;LIU Rui(Shenyang Aircraft Design&Research Institute,Shenyang 110035,China)
出处
《飞机设计》
2025年第5期33-40,共8页
Aircraft Design
关键词
混合储能
多电飞机电力系统
下垂控制
低通滤波
功率分配
hybrid energy storage
more electric aircraft electrical power system
droop control
low-pass filter
power distribution
