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With the development of More/All electrical aircraft (MEA), the complex, high-powered electronic equipments used on modern aircraft will generate a lot of heat, and with the development of a new generation of electronic equipment, its complexity and energy requirements also increase. Therefore, new methods for conceptual systems design based on the energy optimization are required to cope with the increasing number of potential architecture variations to be evaluated from the energy efficiency and thermal limitation. The most promising aircraft electrical power system (AEPS) architectures based on CFAC and HVDC are evaluated with both system weight and power loss feature regarding the overall flight profiles. A novel Multi-Level evaluation methods are proposed in this paper. The knapsack combinational optimization algorithm is used to optimize the low-voltage DC load allocation in AEPS. Three kinds of optimization method for the overall architecture of AEPS are compared with each other in this paper. The numerical results demonstrate the effectiveness of proposed evaluation and optimization solution approach.
Inspec keywords: avionics; knapsack problems; aircraft power systems; optimisation
Subjects: Optimisation techniques; Aircraft electronics; Aerospace power systems