Electrification of non-propulsive aircraft systems has resulted in the increased proliferation of power electronics embedded grids on aircraft. Typically, power converters on these networks are optimised locally without consideration to the wider grid dynamics, which as a result increases the interactive effect between sub-systems. Filters are typically used to decouple these interactive effects, however since weight is a key design factor for aircraft, filters are typically reduced in size, further increasing interactive effects. Recent studies into $H_2$ control, due to its ability to develop decentralised controls whilst considering the global grid dynamic model, have shown to reduce these interactive effects, however studies concentrate only on fixed frequency systems, atypical to modern variable frequency grids on modern aircraft today. In this paper, $H_2$ optimisation is used to optimise a target converter to a pre-designed converter generating the variable frequency AC bus. The proposed method shows that not only are interactions reduced on the target converter for all frequencies but allows the pre-designed system to run as designed without detrimental performance, even during large power transients for full range of frequencies. This paper includes mathematical derivations, key design points, and has been validated and compared against other popular controls by experiment.

中文翻译：

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考虑子系统相互作用的变频三相电力电子网络分散最优控制器设计

非推进飞机系统的电气化已导致飞机上的电力电子嵌入式电网日益普及。通常，无需考虑更广泛的电网动态就可以对这些网络上的电源转换器进行局部优化，从而增加了子系统之间的交互作用。过滤器通常用于解耦这些交互效果，但是，由于重量是飞机的关键设计因素，因此过滤器通常会减小尺寸，从而进一步增加交互效果。最近的研究$ H_2 $由于在考虑全球网格动态模型的同时还具有开发分散控制的能力，因此控制已经显示出可以减少这些交互作用，但是研究仅集中在固定频率系统上，目前不像现代飞机上的现代可变频率网格那样。在本文中，$ H_2 $优化用于将目标转换器优化为生成变频交流总线的预先设计的转换器。所提出的方法表明，不仅对于所有频率而言，目标转换器上的相互作用都得到了减少，而且即使在整个频率范围内发生大功率瞬变时，也允许预先设计的系统按设计运行，而不会损害性能。本文包括数学推导，关键设计要点，并已通过实验进行了验证和与其他流行控件的比较。