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

Renau, Jordi ; Sánchez, Fernando ; Lozano, Antonio (Universidad de Zaragoza) ; Barroso, Jorge (Universidad de Zaragoza) ; Barreras, Félix (Universidad de Zaragoza)

Resumen: 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 long-term 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.

Idioma: Inglés

DOI: 10.1016/j.jpowsour.2017.04.090

Año: 2017

Publicado en: JOURNAL OF POWER SOURCES 356 (2017), 124-132
ISSN: 0378-7753

Factor impacto JCR: 6.945 (2017)

Categ. JCR: CHEMISTRY, PHYSICAL rank: 26 / 146 = 0.178 (2017) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 34 / 285 = 0.119 (2017) - Q1 - T1
Categ. JCR: ENERGY & FUELS rank: 9 / 97 = 0.093 (2017) - Q1 - T1
Categ. JCR: ELECTROCHEMISTRY rank: 3 / 28 = 0.107 (2017) - Q1 - T1

Factor impacto SCIMAGO: 2.202 - Electrical and Electronic Engineering (Q1) - Renewable Energy, Sustainability and the Environment (Q1) - Physical and Theoretical Chemistry (Q1) - Energy Engineering and Power Technology (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/T03
Financiación: info:eu-repo/grantAgreement/ES/MINECO/DPI2015-69286-C3-1-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/ENE2012-38642-C02-01

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Mecánica de Fluidos (Dpto. Ciencia Tecnol.Mater.Fl.)