scholarly journals Study of Photovoltaic Energy Storage by Supercapacitors through Both Experimental and Modelling Approaches

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Pierre-Olivier Logerais ◽  
Olivier Riou ◽  
Mohamed Ansoumane Camara ◽  
Jean-Félix Durastanti
Keyword(s):  
Energy Storage ◽  
Solar Irradiance ◽  
Electrical Circuit ◽  
Experimental Setup ◽  
Equivalent Electrical Circuit ◽  
Stored Energy ◽  
Photovoltaic Energy ◽  
Photovoltaic Array ◽  
Energy Conversion Systems ◽  
Charge Discharge

The storage of photovoltaic energy by supercapacitors is studied by using two approaches. An overview on the integration of supercapacitors in solar energy conversion systems is previously provided. First, a realized experimental setup of charge/discharge of supercapacitors fed by a photovoltaic array has been operated with fine data acquisition. The second approach consists in simulating photovoltaic energy storage by supercapacitors with a faithful and accessible model composed of solar irradiance evaluation, equivalent electrical circuit for photovoltaic conversion, and a multibranch circuit for supercapacitor. Both the experimental and calculated results are confronted, and an error of 1% on the stored energy is found with a correction largely within ±10% of the transmission line capacitance according to temperature.

Research of DC Micro-Grid Photovoltaic Energy Storage System Control Strategy

2013 ◽  
Vol 860-863 ◽  
pp. 2474-2480
Author(s):  
Li Liu ◽  
Yue Chao Wang ◽  
Song Jie Shi ◽  
Chang Liu
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Synthesis Method ◽  
Optical Storage ◽  
Test System ◽  
Control Mode ◽  
Storage Device ◽  
Photovoltaic Energy ◽  
Photovoltaic Array ◽  
Micro Grid

This document focuses on the DC micro-grid photovoltaic energy storage device, the design of energy storage systems are optical storage hybrid power system which composes the photovoltaic array, battery pack, management systems, photovoltaic inverter, load and power grid. According to the characteristics of the battery and the development of the switching device control technology, the charging and discharging control strategy of battery is studied. In this paper, three-phase inverter is based on the space vector control mode that is called SVPWM, after introducing the basic principle and synthesis method of SVPWM, the on-grid and off-grid system working mode control strategy is studied. Finally the control theory develops the inverter used in the optical storage complementary power generation system, and the article builds test platform to test system, verifying the validity of the control strategy.

scholarly journals Reduction of Power Imbalances Using Battery Energy Storage System in a Bulk Power System with Extremely Large Photovoltaics Interactions

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 522
Author(s):  
Rajitha Udawalpola ◽  
Taisuke Masuta ◽  
Taisei Yoshioka ◽  
Kohei Takahashi ◽  
Hideaki Ohtake
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Solar Irradiance ◽  
Storage System ◽  
Energy Storage System ◽  
Mixed Integer ◽  
Battery Energy Storage System ◽  
Large Power ◽  
Battery Energy Storage ◽  
Battery Energy

Power imbalances such as power shortfalls and photovoltaic (PV) curtailments have become a major problem in conventional power systems due to the introduction of renewable energy sources. There can be large power shortfalls and PV curtailments because of PV forecasting errors. These imbalances might increase when installed PV capacity increases. This study proposes a new scheduling method to reduce power shortfalls and PV curtailments in a PV integrated large power system with a battery energy storage system (BESS). The model of the Kanto area, which is about 30% of Japan’s power usage with 60 GW grid capacity, is used in simulations. The effect of large PV power integration of 50 GW and 100 GW together with large BESS capacity of 100 GWh and 200 GWh has been studied. Mixed integer linear programming technique is used to calculate generator unit commitment and BESS charging and discharging schedules. The simulation results are shown for two months with high and low solar irradiance, which include days with large PV over forecast and under forecast errors. The results reveal that the proposed method eliminates power shortfalls by 100% with the BESS and reduce the PV curtailments by 69.5% and 95.2% for the months with high and low solar irradiance, respectively, when 200 GWh BESS and 100 GW PV power generation are installed.

Current measurements across a nematic cell submitted to an external voltage and its equivalent electrical circuit

2008 ◽  
Vol 461 (1-3) ◽  
pp. 164-169 ◽  
Author(s):  
R. Atasiei ◽  
A.L. Alexe-Ionescu ◽  
J.C. Dias ◽  
L.R. Evangelista ◽  
G. Barbero
Keyword(s):  
Electrical Circuit ◽  
Equivalent Electrical Circuit ◽  
External Voltage

Dynamic Modeling of Li-Ion Batteries Using an Equivalent Electrical Circuit

2011 ◽  
Vol 158 (3) ◽  
pp. A326 ◽  
Author(s):  
T. K. Dong ◽  
A. Kirchev ◽  
F. Mattera ◽  
J. Kowal ◽  
Y. Bultel
Keyword(s):  
Dynamic Modeling ◽  
Electrical Circuit ◽  
Equivalent Electrical Circuit ◽  
Li Ion Batteries ◽  
Li Ion
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