Browsing by Author "Lalanne, Fermin Rodriguez"
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Item Algorithm for the Optimal Design of a Fault-Tolerant Aircraft Power Transmission Network(2022-12-01) Zarraga-Rodriguez, Marta; Insausti, Xabier; Lalanne, Fermin Rodriguez; Velasco, Javier; Gutierrez-Gutierrez, Jesus; Tecnalia Research & Innovation; DIGITAL ENERGYAircraft manufacturers aim to decrease the fuel consumption based on reducing weight and increasing the subsystem efficiency. Hence, the electric power system (EPS) acquires great relevance because it must be efficient and lightweight. Any change in the EPS must not affect the aircraft's electrical safety, which under a traditional decentralized EPS strategy is ensured by redundancy. Recently, several decentralized EPS strategies based on the introduction of multiport power converters have arisen. Such strategies meet the established safety goals since the aforementioned devices make it possible to recalculate the path to continue powering the loads in case of failure. However, the literature does not address how to connect such multiport power converters. The main contribution of this article is to present a low-complexity algorithm that minimizing the redundancy of wiring, provides a fault-tolerant power transmission network. This is done under a decentralized EPS strategy where multiport power converters are used. The proposed strategy is evaluated on Boeing 787 aircraft, where we compare the length of the cables both under a traditional decentralized network configuration (where the redundancy option is used to ensure the safety of operation) and in the network provided by our algorithm. A saving of 66.6% is obtained.Item Novel Modular Device for a Decentralised Electric Power System Architecture for More Electric Aircraft(2022) Martinez, Gaizka; Lalanne, Fermin Rodriguez; Sanchez-Guardamino, Ignacio; Benito, Sergio Rodriguez; Echeverria, Jose Martin; Tecnalia Research & Innovation; DIGITAL ENERGYThe aeronautical industry is one of the last groups which has decided to join the distributed architecture trend in order to increase both the safety and efficiency of future aircraft. However, the actual power system used in aircrafts has certain limitations that makes it difficult to achieve this objective due to its high centralisation. This paper proposes a novel methodology for the design of a new modular power electronic device that is based on semiconductor technology, which provides the equipment and functionality that makes the full decentralisation of the aircraft DC power system possible in the near future. The proposed and developed device can be adapted to the requirements of the system where it is going to be implanted, as it is possible to add as many devices as the system needs and have as many modules as needed. All the modules are bidirectional, which makes the system more redundant and fault tolerant, as the number of possible paths to feed the loads is increased. Tests were carried out with 5 devices (4 modules per device), 3 power supplies and 2 loads, where the correct operation of the system (path search, load feed and failure management) was proved.