An auxiliary power unit for advanced aircraft electric power systems

Ebrahimi, Hadi; Gatabi, Javad R.; El-Kishky, H.

doi:10.1016/j.epsr.2014.10.023

Cited by 19 publications

(6 citation statements)

References 30 publications

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“…Currently, most of the electrical power required by an MEA is provided by the engine mounted generators which have the maximum efficiency of 40% in flight. This efficiency decreases to 20% on the ground using the emergency power unit and also with noise pollution and gaseous emissions [1]. Now in the era of artificial intelligence, deep learning has achieved great success [2][3][4], because it requires very little engineering by hand, so it can easily use the increase of available computation and data.…”

Section: Motivationmentioning

confidence: 99%

“…Hybridizing the fuel cells with supercapacitors or batteries as the energy storage systems (ESS) can improve their performance and efficiency [10]. The feasibility of using fuel cells as the emergency power unit of aircraft has been considered in many research studies [1], and [11][12][13][14][15]. Therefore, the replacement of the emergency power unit based on the conventional generation system like ram air turbine by the hybrid fuel cell system is a proper solution to get closer to the advancement of electric aircraft [16].…”

Section: Motivationmentioning

confidence: 99%

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Effect of Load Priority Modeling on the Size of Fuel Cell as an Emergency Power Unit in a More-Electric Aircraft

Salehpour

Radmanesh

Rostami³

et al. 2019

Applied Sciences

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The proton exchange membrane fuel cell as a green power source is a suitable replacement of the engine mounted generators in the emergency power unit of a more-electric aircraft. Most existing energy management methods for operation of fuel cells in the more-electric aircraft refer to the hydrogen consumption minimization. But due to the increasing number of electrical components and hence electrical demand in the aircraft, demand-side management should be considered in these methods. In order to determine the effect of demand-side management on the fuel cell operation and size, an efficient load priority model is presented and integrated into an optimization framework. The proposed optimization framework is formulated as mixed-integer quadratic programming using Karush–Kuhn–Tucker optimality condition and is solved by CPLEX optimization tool. The Boeing 787 electrical distribution system is considered as a single-bus case study to evaluate the performance of the proposed optimization framework. Numerical results show that the size of fuel cell as an emergency power unit resource depends on the type and importance of the system’s loads in different emergency conditions. Also, with an efficient priority model, both hydrogen consumption and load shedding can be decreased.

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Section: Motivationmentioning

confidence: 99%

Section: Motivationmentioning

confidence: 99%

Effect of Load Priority Modeling on the Size of Fuel Cell as an Emergency Power Unit in a More-Electric Aircraft

Salehpour

Radmanesh

Rostami³

et al. 2019

Applied Sciences

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“…To reduce the energy consumption of the propulsion system and increase its efficiency, this paper presents an optimization method that coordinates each components of the propulsion system to improve its output efficiency. By increasing the efficiency of the propulsion system, the capacity of the propulsion system can be reduced; consequently, reduce the energy consumed per flight [20], [21].…”

Section: Efficiency Optimization For Electric Propulsion Systemsmentioning

confidence: 99%

An Energy Efficiency Optimization Method for Fixed Pitch Propeller Electric Aircraft Propulsion Systems

Wang

Zhang

2019

IEEE Access

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As a key component of electric aircrafts, electric propulsion systems provide sufficient thrust for electric aircrafts. By improving its efficiency, the power consumed by the electric propulsion system can be reduced. Therefore, the maximum range of electric aircrafts, which is limited by the energy density of batteries, can be further increased. Upon investigating the power demand and the energy consumption of the electric propulsion system in each flight profile phase of fixed pitch propellers electric aircrafts, this paper proposes a novel energy efficiency optimization method tailored for fixed pitch propeller electric aircrafts by minimizing the total energy consumption of one flight over the maximum efficiency of the propeller. The proposed method is adopted to the design of a fixed pitch propeller electric aircraft. Experimental results suggest that the tested fixed propeller electric aircraft designed can achieve better energy efficiency while reducing energy consumption by more than 10%.

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“…Olsen et al presented an invention related to an aircraft auxiliary power unit and a method of isolating an auxiliary power unit in an aircraft in 2013 [6]. Ebrahimi et al proposed a comprehensive model and characterization of the advanced aircraft electric power systems with a hybrid fuel cell battery auxiliary power unit in 2015 [7]. Chen et al designed an automation management system which can achieve the fine management for energy, safety, and using the effect of bridge-borne equipment and then can reflect the implementation situation and enforcement of replacing APU with bridge-borne equipment at the airport in 2014 [8].…”

Section: Introductionmentioning

confidence: 99%

Investment Payback Period Calculating Model for Airport Bridge Facility

Jian

Xia

Zhu

2020

Mathematical Problems in Engineering

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Due to the uncertainty and difficulty of estimating the investment payback period of the airport bridge facility, a model for calculating the investment payback period of bridge facility is proposed in this paper from the perspective of airport routine operation. Based on the actual operational data of Kunming Changshui Airport, Wuhan Tianhe Airport, and Lijiang Sanyi Airport in 2018, the factors influencing the payback period of bridge facility are the number of bridge facilities and service time, which have been discussed in this paper. According to the simulation, it is concluded that the number of bridge facilities and service time are the key points to the length of the investment payback period, and the annual operating cost of the airline can be saved quite a lot. The research results can be used to assist the leaders’ decision-making of airports and airlines for the promotion of the service of bridge facilities.

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An auxiliary power unit for advanced aircraft electric power systems

Cited by 19 publications

References 30 publications

Effect of Load Priority Modeling on the Size of Fuel Cell as an Emergency Power Unit in a More-Electric Aircraft

Effect of Load Priority Modeling on the Size of Fuel Cell as an Emergency Power Unit in a More-Electric Aircraft

An Energy Efficiency Optimization Method for Fixed Pitch Propeller Electric Aircraft Propulsion Systems

Investment Payback Period Calculating Model for Airport Bridge Facility

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