scholarly journals A Review on Flexible and Transparent Energy Storage System

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2280 ◽  
Author(s):  
Jie Li ◽  
Qianqian Jiang ◽  
Nannan Yuan ◽  
Jianguo Tang
Keyword(s):  
Energy Storage ◽  
Carbon Nanomaterials ◽  
Electronic Device ◽  
Storage System ◽  
Electronic Devices ◽  
Lithium Ion ◽  
Energy Storage System ◽  
Storage Device ◽  
Energy Storage Device ◽  
Super Capacitor

Due to the broad application prospect, flexible and transparent electronic device has been widely used in portable wearable devices, energy storage smart window and other fields, which owns many advantages such as portable, foldable, small-quality, low-cost, good transparency, high performance and so on. All these electronic devices are inseparable from the support of energy storage device. Energy storage device, like lithium-ion battery and super capacitor, also require strict flexibility and transparency as the energy supply equipment of electronic devices. Here, we demonstrate the development and applications of flexible and transparent lithium-ion battery and super capacitor. In particular, carbon nanomaterials are widely used in flexible and transparent electronic device, due to their excellent optical and electrical properties and good mechanical properties. For example, carbon nanotubes with high electrical conductivity and low density have been widely reported by researchers. Otherwise, graphene as an emerging two-dimensional material with electrical conductivity and carrier mobility attracts comparatively more attention than that of other carbon nanomaterials. Substantial effort has been put on the research for graphene-based energy storage system by researchers from all over the world. But, there is still a long way to accomplish this goal of improving the performance for stretchable and transparent electronic device due to the existing technical conditions.

An energy storage system

SIMULATION ◽  
1969 ◽  
Vol 13 (3) ◽  
pp. 155-164 ◽  
Author(s):  
Billy H. Easter
Keyword(s):  
Energy Storage ◽  
Power Systems ◽  
Physical Properties ◽  
System Simulation ◽  
Storage System ◽  
Energy Storage System ◽  
Storage Device ◽  
Energy Storage Device ◽  
Relative Timing ◽  
Load Demand

To harness the energy contained in such unconventional sources as winds, tides, and sunlight, a power system must incorporate an energy storage device to act as a buffer between the source and the load. Since the size of the energy storage device depends upon the relative timing of the availability of energy and the load demand, a system simulation is a logical approach to the study and design of power systems using these unconventional en ergy sources. GPSS is presented as an excellent simula tion vehicle. The physical properties to be simulated are discussed and the resulting GPSS programs are presented. Some proposed applications for these power systems are presented.

Optimal Control of Energy Storage Based on Fuzzy Dependent-Chance Programming

2014 ◽  
Vol 530-531 ◽  
pp. 1003-1006 ◽  
Author(s):  
Jin Liu ◽  
Shu Qiang Zhao
Keyword(s):  
Optimal Control ◽  
Energy Storage ◽  
Control Method ◽  
Storage System ◽  
Energy Storage System ◽  
Mean Value ◽  
Storage Device ◽  
Energy Storage Device ◽  
Optimal Control Method ◽  
Matching Degree

In order to maximize the match between the output of the Hybrid Wind/Photovoltaic/ Energy storage System and the scheduling curve,the article takes the measure that optimizes and controls the energy storage device one day ahead.Due to the fuzziness of the wind and photovoltaic output, the optimal control method of energy storage is proposed based on a fuzzy dependent-chance programming theory. This method considers the constraints of the energy storage device including the power output and energy constrain, and the matching degree of each time is represented by credibility value.So the final goal is maximizing the mean value of the total credibility within a day of 96 periods.The genetic algorithm based fuzzy simulation is used to solve the model,then we can get the different periods of energy storage charge and discharge power corresponding to the credibility of maximum mean value.

scholarly journals DC Feeder Voltage Control Strategy of Bidirectional DC to DC converter for Railway Traction

2019 ◽  
Vol 8 (4) ◽  
pp. 5270-5274
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Buck Converter ◽  
Storage Device ◽  
Voltage Control Strategy ◽  
Super Capacitor ◽  
Railway Traction ◽  
Traction System ◽  
Regenerative Energy

The regenerative energy which is generated during the period of braking of railway traction increases voltage of DC feeder line which makes it crucial and important to consider. Regenerative energy storage system is one of the key solutions to use regenerative energy more effectively and efficiently. Super capacitor has advanced version of the conventional capacitor because of its instant charging and discharging, making it suitable to use as energy storage device for traction system. In this paper, operation of half bridge type bidirectional DC-DC converter for both running and braking operation of traction motor is modeled & simulated and performance analysis is carried out. During charging mode of supercapacitor this converter works as buck converter and during discharge works as boost converter to control the DC feeder voltage at appropriate levels.

Study on Charging and Discharging Characteristics of Energy Storage System in Wind Storage Power Plant under the Condition of Black Start

2014 ◽  
Vol 1070-1072 ◽  
pp. 443-448 ◽  
Author(s):  
Feng Sun ◽  
Yi Zhao ◽  
Gang Wang ◽  
Xiao Xu Lu
Keyword(s):  
Energy Storage ◽  
Power Plant ◽  
Wind Power ◽  
Storage System ◽  
Energy Storage System ◽  
The Self ◽  
Storage Device ◽  
Wind Power Plant ◽  
Energy Storage Device ◽  
Start Process

Grid black start refers to the process that power with self-start ability starts and leads the restart of the entire grid in "full blackout" status. In this paper, it selects the wind power plant containing energy storage device as the black-start power to study the charging/discharging problems of VRB in the self- start process in wind field.

scholarly journals Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4000
Author(s):  
Eunhwan Kim ◽  
Juyeon Han ◽  
Seokgyu Ryu ◽  
Youngkyu Choi ◽  
Jeeyoung Yoo
Keyword(s):  
Ionic Liquid ◽  
Energy Storage ◽  
Lithium Ion ◽  
Electrochemical Energy Storage ◽  
Storage Device ◽  
Energy Storage Device ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Storage Ability ◽  
Electrochemical Energy

For decades, improvements in electrolytes and electrodes have driven the development of electrochemical energy storage devices. Generally, electrodes and electrolytes should not be developed separately due to the importance of the interaction at their interface. The energy storage ability and safety of energy storage devices are in fact determined by the arrangement of ions and electrons between the electrode and the electrolyte. In this paper, the physicochemical and electrochemical properties of lithium-ion batteries and supercapacitors using ionic liquids (ILs) as an electrolyte are reviewed. Additionally, the energy storage device ILs developed over the last decade are introduced.

Wind-Solar-Hydrogen Hybrid Energy Control Strategy Considering Delayed Power of Hydrogen Production

2021 ◽  
Vol 69 (2) ◽  
pp. 5-12
Author(s):  
Zheng Li ◽  
Yan Qin ◽  
Xin Cao ◽  
Shaodong Hou ◽  
Hexu Sun
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Reactive Power ◽  
Storage System ◽  
Energy Storage System ◽  
Storage Device ◽  
Solar Hydrogen ◽  
Dc Voltage ◽  
Hybrid Energy ◽  
Load Demand

In order to meet the load demand of power system, BP based on genetic algorithm is applied to the typical daily load forecasting in summer. The demand change of summer load is analysed. Simulation results show the accuracy of the algorithm. In terms of power supply, the reserves of fossil energy are drying up. According to the prediction of authoritative organizations, the world's coal can be mined for 216 years. As a renewable energy, wind power has no carbon emissions compared with traditional fossil energy. At present, it is generally believed that wind energy and solar energy are green power in the full sense, and they are inexhaustible clean power. The model of wind power solar hydrogen hybrid energy system is established. The control strategy of battery power compensation for delayed power of hydrogen production is adopted, and different operation modes are divided. The simulation results show that the system considering the control strategy can well meet the load demand. Battery energy storage system is difficult to respond to short-term peak power fluctuations. Super capacitor is used to suppress it. This paper studies the battery supercapacitor complementary energy storage system and its control strategy. When the line impedance of each generation unit in power grid is not equal, its output reactive power will be affected by the line impedance and distributed unevenly. A droop coefficient selection method of reactive power sharing is proposed. Energy storage device is needed to balance power and maintain DC voltage stability in the DC side of microgrid. Therefore, a new droop control strategy is proposed. By detecting the DC voltage, dynamically translating the droop characteristic curve, adjusting the output power, maintaining the DC voltage in a reasonable range, reducing the capacity of the DC side energy storage device. Photovoltaic grid connected inverter chooses the new droop control strategy.

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