The development of more efficient propulsion systems for aerospace vehicles is essential to achieve key objectives. These objectives are to increase efficiency while reducing the amount of carbon-based emissions. …
These are specific energy (Wh/kg), specific power (kW/kg), and volumetric energy density (Wh/L). There are four technologies for storage systems that are critical in the design of electric aircraft: battery, fuel cell, super capacitor, and flywheel.
The optimization variables are the aircraft power system degree of hybridization (DOH) and G in power distribution algorithm. The DOH is defined as the ratio between battery energy storage capacity E b and aircraft energy consumption E s in standard mission profile: (14) D O H = E b E s × 100 %
All-electric systems use electro-chemical energy storage, typically batteries, for propulsive power. The size of aircraft that can use an all-electric solution is closely coupled to the development of batteries with higher …
Storage devices can take or provide prescribed power, if available. Consequently, the optimization potential of energy manage-ment functions strictly depends on the complexity and dimen-sion …
One of the proposed solutions for this 50 MW, superconducting, turboelectric, distributed propulsion power train is shown in Fig. 4 and includes cross-strapping of generation and propulsion for aircraft safety and the …
Recovering compression waste heat using latent thermal energy storage (LTES) is a promising method to enhance the round-trip efficiency of compressed air energy storage …
To improve efficiency, the rated power of FC should be enlarged, which could bring serious weight penalty problems for the aircraft. After the battery is deployed in the aircraft energy storage system, the working points of the FC stack can be generally moved to the high-efficiency zone.
Recent developments in fuel cell (FC) and battery energy storage technologies bring a promising perspective for improving the economy and endurance of electric aircraft. However, aircraft power system configuration and power distribution strategies should be reasonably designed to enable this benefit.
Principle battery metrics include volumetric and gravimetric energy and power density, cost, life and safety. These attributes reflect on the design of battery cells and the …
This research paper introduces an avant-garde poly-input DC–DC converter (PIDC) meticulously engineered for cutting-edge energy storage and electric vehicle (EV) …
To summary, both the optimal power system configuration and energy management strategy can be derived with the developed integrated optimization method, aircraft hydrogen economy and FC anti-aging performance can be significantly improved.
Firstly, a novel aircraft hybrid propulsion system topology is designed, in which the battery energy storage system can work synergistically with the fuel cell to provide power …
The energy involved in the bond breaking and bond making of redox-active chemical compounds is utilized in these systems. In the case of batteries and fuel cells, the …
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