Quintessential strategy to operate photovoltaic system coupled with dual battery storage and grid connection

2021 ◽  
Author(s):  
Jamshaid Mannan ◽  
Muhammad Ahmad Kamran ◽  
Muhammad Umair Ali ◽  
Malik Muhammad Naeem Mannan
Keyword(s):  
Photovoltaic System ◽  
Battery Storage ◽  
Grid Connection

Grid-Connected Photovoltaic System Based on QZSI

2013 ◽  
Vol 722 ◽  
pp. 166-170
Author(s):  
Jie Liu ◽  
Fei Wu
Keyword(s):  
Coordinate System ◽  
Energy Conversion ◽  
Network Structure ◽  
Control Strategy ◽  
Decoupling Control ◽  
Photovoltaic System ◽  
Voltage Source ◽  
Matlab Simulink ◽  
Grid Connection ◽  
Reactive Current

Quasi-Z-source inverter (QZSI) is a new topology, which has been proposed to be simple and realize the single stage energy conversion in recent years. Due to the unique impedance network structure, it has the characteristic of shoot-through. In this paper the voltage-source QZSI is applied to grid-connected photovoltaic system. Firstly the operating principle of QZSI is deep analyzed, and then a grid-connected photovoltaic system using a QZSI is proposed. In order to conform to the requirement of grid-connection, the decoupling control thought of active current and reactive current by d-q rotating coordinate system and the modified PWM strategy of this system are studied. The rationality and feasibility of the proposed control strategy is verified through MATLAB/Simulink.

scholarly journals Designing of an off-grid Photovoltaic system with battery storage for remote location

TECCIENCIA ◽  
2021 ◽  
Vol 16 (31) ◽  
pp. 15-28
Author(s):  
Asad A. Naqvi ◽  
Talha Bin Nadeem ◽  
Ahsan Ahmed ◽  
Asad Ali Zaidi
Keyword(s):  
Energy Demand ◽  
Net Present Value ◽  
Energy Requirement ◽  
Maximum Energy ◽  
Environmental Benefits ◽  
Photovoltaic System ◽  
Solar Irradiation ◽  
Battery Storage ◽  
Pv System ◽  
Battery Capacity

Off-grid Photovoltaic (PV) system along with battery storage is very effective solution for electrification in remote areas. However, battery capacity selection is the most challenging task in system designing. In this study, an off-grid PV system along with battery storage is designed for the remote area of Karachi, Pakistan. The system is designed by considering the maximum energy requirement in summer season. The battery storage is selected to fulfill the energy demand during the night and cloudy seasons. On the basis of load, a total of 6 kW system is required to fulfill the energy demand. For such system, 925 Ah of battery is required to meet the energy requirement for a day in absence of solar irradiation. A regression-based correlation between battery capacity and energy demand is prepared for suitable battery sizing using Minitab. An economic analysis of the project is also carried out from which a net present value and simple payback are determined as USD 10,348 and 3 years, respectively. The environmental benefits are also been determined. It is found that the system will reduce around 7.32 tons of CO2 per annum which corresponds to the 183.69 tons of CO2 not produced in the entire project life.

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