On parallel hybrid-electric propulsion system for unmanned aerial vehicles

Hung, Jane Y.; Gonzalez, Felipé

doi:10.1016/j.paerosci.2011.12.001

Cited by 119 publications

(47 citation statements)

References 15 publications

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“…For road vehicle applications, the series hybrid architecture has the lowest fuel consumption [21]. However, it has a larger weight than a parallel architecture, which is especially important in aerospace applications [22]. In a design study by Friedrich and Robinson, which was limited to light aircraft, it was demonstrated that the parallel configuration provides the highest efficiency for aerospace applications [23].…”

Section: Hybrid Electric Propulsion System Architecturementioning

confidence: 99%

Analysis and design of hybrid electric regional turboprop aircraft

2017

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The potential environmental benefits of hybrid electric regional turboprop aircraft in terms of fuel consumption are investigated. Lithium-air batteries are used as energy source in combination with conventional fuel. A validated design and analysis framework is extended with sizing and analysis modules for hybrid electric propulsion system components. In addition, a modified Bréguet range equation, suitable for hybrid electric aircraft, is introduced. The results quantify the limits in range and performance for this type of aircraft as a function of battery technology level. A typical design for 70 passengers with a design range of 1528 km, based on batteries with a specific energy of 1000 Wh/kg, providing 34% of the shaft power throughout the mission, yields a reduction in emissions by 28%. Keywords Hybrid electric propulsion

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Section: Hybrid Electric Propulsion System Architecturementioning

confidence: 99%

Analysis and design of hybrid electric regional turboprop aircraft

2017

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“…In the literature [11] one can find the prospect of development of the unmanned actuators towards the use of internal combustion engine with rotary piston or with horizontally-opposed cylinders (boxer type). The engine will be controlled by a digital circuit that will send information about its parameters to the operator in real time.…”

Section: Prospects For the Development Of Bpl Propulsion Unitsmentioning

confidence: 99%

Overview of solutions and analysis of the ability to evaluate the performance parameters of unmanned aerial vehicles propulsion systems

Karpiński

Galant

2017

MATEC Web Conf.

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Abstract. The aim of aircraft engines development is the propulsion which is characterized by high powerto-mass ratio. Therefore, the alternative solutions that provide the required power by the low weight propulsion are sought after. The main advantage of these solutions is improvement of environmental and economic properties. This paper presents the overview of solutions and studies conducted for the unmanned aerial vehicles propulsion. For the purposes of studies a test bench was prepared. Its enables the comparison of the propulsion operating parameters taking into account changes in the values of thrust and propulsion power. The summary includes a proposal to improve the environmental indicators of propulsion systems for unmanned aerial vehicles.

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“…This strategy is known as hybridization, and its implementation ensures high values of both energy and specific power [4]. The first hybrid powerplants (HPP) were based on ICEs, and achieved a significant reduction in consumption rates [5,6]. Hybrid electric control systems can be active or passive.…”

Section: Introductionmentioning

confidence: 99%

“…As the stack has 50 cells with an active surface of 81.28 cm 2Fig. 2can be easily rescaled to depict the total current, voltage and power6 values. In particular, current should go up to 60 A, total stack voltage corresponds to an interval extending from 15 V to 50 V, and power ranges between 100 W and 1,100 W. Dashed lines correspond to the operating point for the maximum power demanded by the DC bus during the ascending flight (30.6 V, 22.5 A, and 686.3 a) Polarization curve of the HT-PEMFC stack; b) flow diagram with the main sensors.…”

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confidence: 99%

Analysis of the performance of a passive hybrid powerplant to power a lightweight unmanned aerial vehicle for a high altitude mission

Renau

Sánchez

Lozano

et al. 2017

Journal of Power Sources

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The objective of this research is to analyze the performance of a passive hybrid powerplant control system to be implemented in a lightweight unmanned aerial vehicle capable to ascend up to the high troposphere (10,000 m). The powerplant is based on a high-temperature PEM fuel cell connected in parallel to a set of lithium-polymer batteries and regulated by two power diodes. Test performed in steady state demonstrates that the use of the hybrid system increases the efficiency of the stack by more than 7% because the voltage at the main DC bus is limited by the batteries. The robustness of the passive control system is proved in a longterm test in which random perturbations of ±15% are applied to the average power that would be demanded during the ascent flight. The hybridization of the stack with the batteries eliminates sudden peaks in the current generated by the stack, which are responsible for prompt degradation phenomena that drastically reduce its useful lifetime. The study demonstrates that with the passive hybrid powerplant it is possible to reach the target height with the gas storage system considered in the application, contrary to what happens with the simple power plant.

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On parallel hybrid-electric propulsion system for unmanned aerial vehicles

Cited by 119 publications

References 15 publications

Analysis and design of hybrid electric regional turboprop aircraft

Analysis and design of hybrid electric regional turboprop aircraft

Overview of solutions and analysis of the ability to evaluate the performance parameters of unmanned aerial vehicles propulsion systems

Analysis of the performance of a passive hybrid powerplant to power a lightweight unmanned aerial vehicle for a high altitude mission

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