Phase balancing for aircraft electrical distribution systems
Phase balancing for aircraft electrical distribution systems
复制标题
飞机配电系统的相位平衡
DOI：
--
复制
发表时间：
2015
影响因子：
4.4
通讯作者：
D. Schulz
中科院分区：
文献类型：
--
作者：
M. Terorde;Housam Wattar;D. Schulz
未来的飞机将使用几个新概念来改进其电力供应系统，将其转变为一个小型智能配电网。在这些概念中，提出了电源管理系统、提高母线电压、高压直流电网集成、相位平衡和馈线平衡。所有这些方法都旨在减轻飞机的总重量。为了分析相平衡法对飞机减重的潜力，在对某实际客机电负荷分析的基础上进行了仿真。模拟再现了飞机的供电网格和馈线相位的不对称利用。在仿真中，为了使馈线主线和馈线支路的负载更加对称，并使回路电流最小，用不同的目标函数对相位平衡进行了测试。新提出的概念建议，根据固定的切换方案，根据地面/飞行阶段转移负载，这是在飞机首次飞行之前计算的。因此，只有与飞行无关的商业负荷是可切换的。此外，根据以前的出版物，因此考虑了负载的局部分布和负载功率因数。根据仿真结果，对实际飞机的重量效益进行了计算。为了验证这个新概念，建立了一个包含多个多路开关的开关箱，并给出了实验结果。
The aircraft of the future will use several new concepts to improve its electrical power supply system, transforming it into a small smart distribution grid. Among these concepts, power management systems, increase in the main bus voltage, integration of high-voltage direct current grids, phase balancing, and power feeder balancing have been suggested. All these methods aim to reduce the overall weight of the aircraft. In order to analyze the weight-saving potential of aircraft through the phase-balancing method, simulations have been built based on the electrical load analysis of an actual passenger aircraft. The simulations reproduce the electrical power supply grid of an aircraft and the asymmetric utilization of the phases of the power feeders. Within the simulations, phase balancing is tested with different objective functions in order to achieve a more symmetric load of the feeder main line and the feeder branches and to minimize the return current. The new proposed concept suggests that loads be shifted depending on the ground/flight phases based on a fixed switching scheme, which is calculated before the first flight of the aircraft. As a result, only the nonflight-relevant commercial loads have been made switchable. Additionally, based on former publications, the local distribution of the loads and the load power factor have thereby been taken into account. Based on the simulation results, the weight benefit for the actual aircraft has been calculated. To validate the new concept, a switching box containing several multiplex switches has been built, and experimental results are presented.