Supercapacitors applications for aircraft engine start systems

Аuthors

Vyshkov Y. D.^*, Reznikov S. B.^**

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: yuvyshkov@mail.ru
**e-mail: rezn41@mail.ru

Abstract

The aircraft engine start fr om standstill to rated idle in ground conditions can be carried out by electric starting gear fed by either onboard or ground-based power sources. The onboard power sources herewith are accumulators, while voltage can be boosted in ground conditions. Accumulators limit the power of electric start systems. Thus, for starting high-power aircraft engines non-electric systems are used. To increase the power of the ground based engine start systems a high-voltage power supplies can be used. The goal of the article consists in demonstrating the possibility of supercapacitors application to start aircraft engine by electric system. As far as a supercapacitor specific power is greater than that of an accumulator, they can be effectively used for increasing the power rating of aircraft engine start electric systems, wh ere accumulators were previously used. Since the energy accumulated in supercapacitor increases with voltage rise, the supercapacitors can be effectively used in higher voltage systems to increase their power.

The goal of the presented work consists in studying and comparing characteristics and processes of the starting mode of electric motor, fed by power supply containing supercapacitor and without it, based on the results obtained by computer simulation with Electronic Workbench V5.12.

The simulation results confirm the possibility of increasing the aircraft engine start electric system's power by supercapacitor implementation. It means that in many cases it will allow replace aircraft engine start air-compressing and gas turbine systems by electric systems, which possess many advantages and are of great importance for all-electric aircraft.

Keywords:

aircraft engine start electric installation, supercapacitor, DC motor, engine starting simulation model

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