Aircraft power management - Algorithms and interactions

Power Management Problem for Civil Aircraft under More Electric Environment

“…However, the integration of the more electric concept into the civil aircraft will introduce several challenges for the operation of its power system [3][4][5][6], especially the power management problem (PMP) which is an important scheduling problem before an aircraft executing a flight mission, in order to ensure there generates enough power in any instant in time to be equal to the consumed power within the whole flight duration [6]. The PMP with its dispatched power generation level and load shedding results is one of the critical prerequisites for a conventional aircraft making a reliable and safe flight [7]. As shown in [8], considering the total amount of the load demand for a conventional aircraft power system is relatively small and the load shape is almost "flat" since the commercial and avionics electric loads are usually fixed within the whole flight duration, the PMP of the conventional aircraft is just to select the rated power of each possible load and calculate the sum value as the expected power generation level for the gas turbine generators.…”

“…The conventional PMP is designed to protect electrical generators from overloads through prioritizing the loads as essential or nonessential one and will shed the loads based on the priority list in case of the abrupt generator outage. However, with the development of the MEA, the conventional PMP cannot make use of all generation resources and controllable loads in fulfilling a reliable power balance [7]. One of the significant reasons is that the MEA will introduce a large amount of electrical power demands and these electric loads are usually highly variable accompanied with the aircraft's different flight phases represented by the altitude, velocity, and attitude [6][7][8].…”

“…However, with the development of the MEA, the conventional PMP cannot make use of all generation resources and controllable loads in fulfilling a reliable power balance [7]. One of the significant reasons is that the MEA will introduce a large amount of electrical power demands and these electric loads are usually highly variable accompanied with the aircraft's different flight phases represented by the altitude, velocity, and attitude [6][7][8]. The majority of increased electric loads for the MEA are also closely corresponding to the flight safety subsystems, such as flight control, engine control, cabin pressure hold, and leading-edge wing/elevator ice protection.…”

Solving large-scale resource allocation problems : formulations, solutions and case studies

“…Several different kinds of strategies can be adopted in solving resource allocation problems and they can be mainly categorized into two classes, i.e., the centralized strategies and the distributed strategies [82]. For the centralized strategies, all the system information for decision making will be sent to the control centre and the control commands will be delivered to each component from that control center.…”

“…For a macroscopic view of the traffic system, some descriptions about the non-signalized intersections or uncontrolled intersections can be found in the literature [23,26,39,74,78,[92][93][94]. [82], which are dominantly based on the load shedding feature that detects overloading. This type of load shedding method usually disconnects and connects relevant load(s) according to their priority and power supply capacity.…”