scholarly journals Iodide Electrolyte-Based Hybrid Supercapacitor for Compact Photo-Rechargeable Energy Storage System Utilising Silicon Solar Cells

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2708
Author(s):  
Magdalena Skunik-Nuckowska ◽  
Patryk Rączka ◽  
Justyna Lubera ◽  
Aleksandra A. Mroziewicz ◽  
Sławomir Dyjak ◽  
...  
Keyword(s):  
Storage System ◽  
Energy Storage System ◽  
Solar Irradiation ◽  
Hybrid Supercapacitor ◽  
Storage Element ◽  
Pv Systems ◽  
Parallel Connections ◽  
The One ◽  
A Charge ◽  
Applicability Evaluation

The one of the most important issues in constructing light-harvesting photovoltaic (PV) systems with a charge storage element is its reliable and uninterrupted use in highly variable and weather-dependent conditions in everyday applications. Herein, we report the construction and applicability evaluation of a ready-to-use portable solar charger comprising a silicon solar cell and an enhanced energy hybrid supercapacitor using activated carbon electrodes and iodide-based aqueous electrolyte to stabilise the PV power under fluctuating light conditions. The optimised electrode/electrolyte combination of a supercapacitor was used for the construction of a 60 F/3 V module by a proper adjustment of the series and parallel connections between the CR2032 coin cells. The final photo-rechargeable device was tested as a potential supporting system for pulse electronic applications under various laboratory conditions (temperature of 15 and 25 °C, solar irradiation of 600 and 1000 W m−2).

scholarly journals The Optimal Allocation and Operation of an Energy Storage System with High Penetration Grid-Connected Photovoltaic Systems

2020 ◽  
Vol 12 (15) ◽  
pp. 6154 ◽  
Author(s):  
Hui Wang ◽  
Jun Wang ◽  
Zailin Piao ◽  
Xiaofang Meng ◽  
Chao Sun ◽  
...  
Keyword(s):  
Energy Storage ◽  
Power Loss ◽  
Power Flow ◽  
Optimal Allocation ◽  
Storage System ◽  
Distribution Network ◽  
Energy Storage System ◽  
Pv Systems ◽  
High Penetration ◽  
Storage Optimization

High-penetration grid-connected photovoltaic (PV) systems can lead to reverse power flow, which can cause adverse effects, such as voltage over-limits and increased power loss, and affect the safety, reliability and economic operations of the distribution network. Reasonable energy storage optimization allocation and operation can effectively mitigate these disadvantages. In this paper, the optimal location, capacity and charge/discharge strategy of the energy storage system were simultaneously performed based on two objective functions that include voltage deviations and active power loss. The membership function and weighting method were used to combine the two objectives into a single objective. An energy storage optimization model for a distribution network considering PV and load power temporal changes was thus established, and the improved particle swarm optimization algorithm was utilized to solve the problem. Taking the Institute of Electrical and Electronic Engineers (IEEE)-33 bus system as an example, the optimal allocation and operation of the energy storage system was realized for the access of high penetration single-point and multi-point PV systems in the distribution network. The results of the power flow optimization in different scenarios were compared. The results show that using the proposed approach can improve the voltage quality, reduce the power loss, and reduce and smooth the transmission power of the upper-level grid.

Development of a Charge Path Optimization Controller Block for a Battery Energy Storage System

2014 ◽  
Vol 47 (3) ◽  
pp. 8583-8587 ◽  
Author(s):  
Robert J.W. de Groot ◽  
Bram M.J. Vonk ◽  
Hans J.A. Beckers ◽  
Johannes G. Slootweg
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Path Optimization ◽  
Battery Energy Storage System ◽  
Battery Energy Storage ◽  
Battery Energy ◽  
A Charge

Assessment of the Energy Gain of Photovoltaic Systems by Using Solar Tracking in Equatorial Regions

2018 ◽  
Vol 140 (3) ◽  
Author(s):  
Freddy Ordóñez ◽  
Carlos Morales ◽  
Jesús López-Villada ◽  
Santiago Vaca
Keyword(s):  
Tracking System ◽  
Solar Irradiation ◽  
Pv Systems ◽  
Pv Array ◽  
Solar Arrays ◽  
The North ◽  
Operation Conditions ◽  
Solar Tracking ◽  
The One ◽  
The Impact

Solar tracking is a major alternative to increase the electric output of a photovoltaic (PV) module, and therefore, improves the global energy collected by PV systems. Nonetheless, solar-tracking PV systems require more resources and energy than static systems. Additionally, the presence of cloudiness and shadows from near buildings may reduce the profitability of these systems. Therefore, their feasibility must be assessed in order to justify their application. In equatorial latitudes, the sun's movement through the sky is in the zenith East–West axis. It may be advantageous, since the best tilt in such latitudes is the horizontal. In these terms, the main objective of this research is to numerically assess the performance of a PV array with solar tracking and under typical operation conditions in equatorial latitudes. For this, the assessment of the solar resource in Quito was analyzed in first place. Then, the comparison between three solar arrays was studied to evaluate the feasibility of solar tracking (two-axes tracking, horizontal one-axis tracking, and horizontal fixed). Additionally, the impact of cloudiness and shadows in the system was analyzed. The results showed that the horizontal one-axis tracking is the most beneficial option for equatorial latitudes as the two-axes tracking system only surpasses the gains of the one-axis tracking marginally. Furthermore, the use of a strategy to place the PV modules horizontally in cloudy conditions seems to be marginally advantageous. Finally, the shadows created from neighboring buildings in the East and West of the system may reduce considerably the solar irradiation on the PV-array (not the ones in the north and south).

scholarly journals Energy Storage System with the use of Supercapacitors

2018 ◽  
Vol 212 (1) ◽  
pp. 137-151
Author(s):  
Wiesław Tarczyński ◽  
Ryszard Kopka
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Conditions ◽  
Storage Element ◽  
Uninterruptible Power Supply ◽  
Voltage Balancing ◽  
Uninterruptible Power ◽  
Supply Systems ◽  
Analysis Of Performance

Abstract The article presents an analysis of performance of an energy storage element used in uninterruptible power supply systems built with the use of supercapacitors. It describes the operation of the voltage balancing system during charging and discharging of the capacitors. Attention has been drawn to the energy conditions of the system's operation and solutions that provide enhanced energy efficiency have been described.

scholarly journals Numerical modeling of hybrid supercapacitor battery energy storage system for electric vehicles

2019 ◽  
Vol 158 ◽  
pp. 2750-2755 ◽  
Author(s):  
Lip Huat Saw ◽  
Hiew Mun Poon ◽  
Wen Tong Chong ◽  
Chin-Tsan Wang ◽  
Ming Chian Yew ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Energy Storage ◽  
Electric Vehicles ◽  
Storage System ◽  
Energy Storage System ◽  
Hybrid Supercapacitor ◽  
Battery Energy Storage System ◽  
Battery Energy Storage ◽  
Battery Energy

Second Law Optimization of a Sensible Heat Thermal Energy Storage System With a Distributed Storage Element—Part II: Presentation and Interpretation of Results

1991 ◽  
Vol 113 (1) ◽  
pp. 27-32 ◽  
Author(s):  
M. J. Taylor ◽  
R. J. Krane ◽  
J. R. Parsons
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Distributed Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Storage Element ◽  
Thermodynamic Performance ◽  
Thermal Energy Storage System ◽  
Dwell Period

This study explores the behavior of a flat-slab, sensible heat thermal energy storage system, the physical design and operation of which have been optimized to minimize the production of entropy by thermodynamic irreversibilities. The analytical model is developed in Part I of this work. This part includes a description of the numerical model and the presentation and interpretation of the results of a system optimization study. The major results of this study show that: 1) any Second Law model of a thermal energy storage system must include a distributed storage element in order to make realistic estimates the thermodynamic performance of the system; 2) unconstrained optimization of the design of a thermal energy storage system tends to yield a system that is undesirably large, but by constraining the number of transfer units (NTU), it is possible to design systems of a realistic size without seriously degrading the thermodynamic performance; 3) counterflow systems operated without a dwell period are the most efficient type of system; and 4) the use of a dwell period with a counterflow system, or the operation of a system in parallel flow instead of counterflow, degrades the thermodynamic performance of the system and increases the required system size (NTU) in comparison to a counterflow system operated without a dwell period.

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