A Method Combined with the Genetic Algorithm for Design of High Efficiency Propeller

2014 ◽  
Vol 709 ◽  
pp. 172-175
Author(s):  
Song Xiang ◽  
Wei Ping Zhao ◽  
Li Guo Zhang ◽  
Gang Tong
Keyword(s):  
Genetic Algorithm ◽  
Rotational Speed ◽  
Pitch Angle ◽  
Present Method ◽  
High Efficiency ◽  
Design Method ◽  
General Aviation ◽  
Li Ion Battery ◽  
Li Ion ◽  
Mach Numbers

In this paper, a design method combined with the genetic algorithm is proposed to design the propeller of general aviation aircraft. The inputs of this method are the cruise speed, rotational speed, propeller diameter, number of blade, thrust, Reynolds and Mach numbers. The chord and pitch-angle angle distributions along the blade are the outputs of this method. The propeller of a kind of Li-ion battery powered aircraft is designed by the present method.

A universal cross-linking binding polymer composite for ultrahigh-loading Li-ion battery electrodes

2020 ◽  
Vol 8 (19) ◽  
pp. 9693-9700
Author(s):  
Dong Wang ◽  
Qian Zhang ◽  
Jie Liu ◽  
Erying Zhao ◽  
Zhenwei Li ◽  
...  
Keyword(s):  
Polymer Composite ◽  
High Efficiency ◽  
Cross Linking ◽  
Li Ion Battery ◽  
Li Ion

A general, facile-operability, and sustainable strategy to achieve ultrahigh-loading electrodes has been proposed that is simply replacing the traditional PVDF binder with an eco-friendly and robust c-PAA-XG binder with a high-efficiency damper.

Determination of possible configurations for Li0.5CoO2 delithiated Li-ion battery cathodes via DFT calculations coupled with a multi-objective non-dominated sorting genetic algorithm (NSGA-III)

2018 ◽  
Vol 20 (41) ◽  
pp. 26405-26413 ◽  
Author(s):  
Woo Gyu Han ◽  
Woon Bae Park ◽  
Satendra Pal Singh ◽  
Myoungho Pyo ◽  
Kee-Sun Sohn
Keyword(s):  
Genetic Algorithm ◽  
Dft Calculations ◽  
Redox Potential ◽  
Band Gap ◽  
Magnetic Moment ◽  
Band Gap Energy ◽  
Li Ion Battery ◽  
Gap Energy ◽  
Li Ion

A plausible configuration for Li0.5CoO2 was pinpointed using NSGA-III-assisted DFT calculations involving redox potential, band gap energy and magnetic moment.

scholarly journals A new high speed charge and high efficiency Li-Ion battery charger interface using pulse control technique

2022 ◽  
Vol 12 (2) ◽  
pp. 1168
Author(s):  
Mustapha El Alaoui ◽  
Karim El Khadiri ◽  
Rachid El Alami ◽  
Ahmed Tahiri ◽  
Ahmed Lakhssassi ◽  
...  
Keyword(s):  
High Speed ◽  
High Efficiency ◽  
Control Technique ◽  
Constant Current ◽  
Li Ion Battery ◽  
Pulse Control ◽  
Battery Charger ◽  
Small Surface ◽  
Charging Mode ◽  
Li Ion

A new Li-Ion battery charger interface (BCI) using pulse control (PC) technique is designed and analyzed in this paper. Thanks to the use of PC technique, the main standards of the Li-Ion battery charger, i.e. fast charge, small surface area and high efficiency, are achieved. The proposed charger achieves full charge in forty-one minutes passing by the constant current (CC) charging mode which also included the start-up and the constant voltage mode (CV) charging mode. It designed, simulated and layouted which occupies a small size area 0.1 mm2 by using Taiwan Semiconductor Manufacturing Company 180 nm complementary metal oxide semi-conductor technology (TSMC 180 nm CMOS) technology in Cadence Virtuoso software. The battery voltage VBAT varies between 2.9 V to 4.35 V and the maximum battery current IBAT is 2.1 A in CC charging mode, according to a maximum input voltage VIN equal 5 V. The maximum charging efficiency reaches 98%.

scholarly journals A High Efficiency Li-Ion Battery LDO-Based Charger for Portable Application

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Youssef Ziadi ◽  
Hassan Qjidaa
Keyword(s):  
High Efficiency ◽  
Cmos Technology ◽  
High Accuracy ◽  
Constant Current ◽  
Li Ion Battery ◽  
Constant Voltage ◽  
Battery Charger ◽  
Charging Current ◽  
Li Ion ◽  
Simulation Results

This paper presents a high efficiency Li-ion battery LDO-based charger IC which adopted a three-mode control: trickle constant current, fast constant current, and constant voltage modes. The criteria of the proposed Li-ion battery charger, including high accuracy, high efficiency, and low size area, are of high importance. The simulation results provide the trickle current of 116 mA, maximum charging current of 448 mA, and charging voltage of 4.21 V at the power supply of 4.8–5 V, using 0.18 μm CMOS technology.

Utilization of Li-Ion Battery Assisted Fuel Cell System in Warships

2011 ◽  
Vol 8 (6) ◽  
Author(s):  
Mahmut Turhan ◽  
Nurettin Abut
Keyword(s):  
Fuel Cells ◽  
High Efficiency ◽  
Parallel Implementation ◽  
Good Alternative ◽  
Cell System ◽  
Inrush Current ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Power Intensity ◽  
Li Ion

In this study, design principles required for fuel cells to be used in systems that need inrush current are disclosed. The most important difference that separates this study from others is the consideration of utilizing Li-ion batteries to provide power where inrush current is needed in order to spread. In previous studies, lead acid batteries were used instead of Li-ion batteries. Noiselessness and effective electric production ability make fuel cells a good alternative for military applications. The Li-ion battery is the state of the art technology and while advantages include their light weight and the facts that they occupy less space, charge quickly, and have high power intensity, one can experience problems charging because of their charge characteristics. The desired voltage and current can be obtained through serial and parallel implementation of Li-ion batteries. Li-ion batteries and fuel cells are the technology of our day and it is desirable to obtain a more effective system by bringing the advantages of both to the same system. A high efficiency and silent energy is obtained through the use of fuel cells, and Li-ion batteries will enable their use in systems requiring inrush current. Noiseless maneuvering capability in the operational area for a battle ship is a very important factor to preserve. In this study, a way in which these two technologies can be used in cooperation and in an efficient way is described. Fuel cells that have output power 1000 W, output voltage 115 V, and output frequency 60 Hz were tested in the radio room of a corvette of the Turkish Navy.

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