scholarly journals Energy Efficiency of LVDC Supplies Including PV Sources

2021 ◽  
Vol 15 ◽  
pp. 46-53
Author(s):  
Anis Ammous ◽  
Abdulrahman Alahdal ◽  
Kaiçar Ammous
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Energy Efficiency ◽  
Renewable Energy ◽  
Low Voltage ◽  
Power Source ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Pv Systems ◽  
High System

The Low Voltage Direct Current (LVDC) system concept has been growing in the recent times due to its characteristics and advantages like renewable energy source compatibility, more straightforward integration with storage utilities through power electronic converters and distributed loads. This paper presents the energy efficiency performances of a proposed LVDC supply concept and others classical PV chains architectures. A PV source was considered in the studied nanogrids. The notion of Relative Saved Energy (RSE) was introduced to compare the studied PV systems energy performances. The obtained results revealed that the employment of the LVDC chain supply concept is very interesting and the use of DC loads as an alternative to AC loads, when a PV power is generated locally, is more efficient. The installed PV power source in the building should be well sized regarding to the consumed power in order to register a high system RSE.

scholarly journals Energy Efficiency Performances of LVDC Nanogrids Powered Buildings

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Anis Ammous ◽  
Ammar Assaidi ◽  
Abdulrahman Al Ahdal ◽  
Kaiçar Ammous
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Energy Efficiency ◽  
Renewable Energy ◽  
Low Voltage ◽  
Power Source ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Pv Systems ◽  
High System

The Low Voltage Direct Current (LVDC) system concept has been growing in the recent times due to its characteristics and advantages like renewable energy source compatibility, more straightforward integration with storage utilities through power electronic converters, and distributed loads. This paper presents the energy efficiency performances of a proposed LVDC supply concept and other classical PV chains architectures. A PV source was considered in the studied nanogrids. The notion of relative saved energy (RSE) was introduced to compare the studied PV systems energy performances. The obtained results revealed that the use of the proposed LVDC chain supply concept increases the nanogrid efficiency. The installed PV power source in the building should be well sized regarding the consumed power in order to register a high system RSE. The efficiency of the new LVDC architecture is 10% higher than the conventional LVDC one.

scholarly journals Optimal planning of renewable energy source and energy storage in a medium- and low-voltage distributed AC/DC system in China

2019 ◽  
Vol 2019 (16) ◽  
pp. 2354-2361 ◽  
Author(s):  
Lei Huang ◽  
Zexin Chen ◽  
Qiong Cui ◽  
Jiyuan Zhang ◽  
Hao Wang ◽  
...  
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Renewable Energy ◽  
Energy Storage ◽  
Low Voltage ◽  
Optimal Planning ◽  
Dc System

scholarly journals A Local Control Strategy for Distributed Energy Fluctuation Suppression Based on Soft Open Point

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1520 ◽  
Author(s):  
Guo Xinming ◽  
Huo Qunhai ◽  
Wei Tongzhen ◽  
Yin Jingyuan
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Renewable Energy ◽  
Local Control ◽  
Control Strategy ◽  
Low Voltage ◽  
Mathematic Model ◽  
Voltage Distribution ◽  
Voltage Fluctuation ◽  
Open Point

This paper proposes a local control strategy applied in the soft open point (SOP) to suppress voltage fluctuation when adding a renewable energy source into the system. The mathematic model of the grid connected to SOP is established based on the characteristics of a low-voltage distribution network. Combined with the mathematic model and local voltage information, the local control strategy is proposed to optimize the active and reactive power distribution and consume the minimum apparent power of the converter. The local control strategy can effectively suppress the voltage fluctuation caused by renewable energy access, which was testified by MATLAB/Simulink simulation. In addition, the local control strategy can deduce the communication resource and increase the response speed compared to global optimization. This paper is meaningful for renewable energy source distribution and voltage balance in low-voltage distribution systems.

Results Concerning the Combustion of Liquid Biofuels

2012 ◽  
Vol 245 ◽  
pp. 113-119
Author(s):  
Florentina Călugăru ◽  
Antoaneta Maria Bărăscu
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Energy Efficiency ◽  
Renewable Energy ◽  
Vegetable Oils ◽  
Combustion Process ◽  
Point Of View ◽  
Liquid Fuels ◽  
Environment Protection ◽  
The Stability

This paper presents results concerning the vegetable oils as an renewable energy source, with applications for production of electricity or heat. The experiments followed the ignition and the stability of the combustion process of the liquid biofuels and the evaluation of pollutants emissions. The combustion process of liquid fuels additivated with vegetable oils proves their advantage from the point of view of energy efficiency and of the environment protection, the emissions values falling in the allowed interval.

Utilization of pomegranate waste-peel as a novel substrate for biodiesel production by Bacillus cereus (MF908505)

2020 ◽  
Vol 4 (3) ◽  
pp. 1199-1207
Author(s):  
Amruta P. Kanakdande ◽  
Chandrahasya N. Khobragade ◽  
Rajaram S. Mane
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Renewable Energy ◽  
Bacillus Cereus ◽  
Fossil Fuels ◽  
Biodiesel Production ◽  
Energy Needs

The continuous rising demands and fluctuations in the prices of fossil fuels warrant searching for an alternative renewable energy source to manage the energy needs.

Sign in / Sign up

Export Citation Format

Share Document