scholarly journals Design Analysis on Transient, Steady-State and Fault Condition of the Grid connected Renewable Energy Systems and its Correction Techniques

2021 ◽  
Vol 7 (09) ◽  
pp. 211-216
Author(s):  
R Sekar, Suresh D S and H Naganagouda
Keyword(s):  
Steady State ◽  
Alternative Energy ◽  
Electrical Power ◽  
Energy Systems ◽  
Renewable Energy Systems ◽  
Electrical Stress ◽  
Technical Issues ◽  
Bus Structure ◽  
The Common ◽  
Alternative Energy Resources

In the recent years, using the existing electrical resources to meet the electrical power demand is a challenging one. To address the issues, an alternative energy resources are bringing together to support the existing resources. And it is known that integrating the electrical resources together having lot more technical issues because of their unique features. So bringing them into the common platform and making them together is a wise solution. This paper also an attempt to address one of the issues on the electrical resources integration in the common DC bus structure. In the common bus, various loads with different ratings use to be connected and its recurrent changes such as ON and OFF are not in the control. Due to this the electrical stress in the common bus will increase. In order to minimize the variations a compensation mechanism must be used for avoiding the disturbance during transient, steady-state and fault conditions.

scholarly journals A two stage battery charger for EV charging applications

2020 ◽  
Vol 19 (2) ◽  
pp. 593
Author(s):  
V. Kalyanasundaram ◽  
George S Fernandez ◽  
K. Vijayakumar ◽  
S. Vidyasagar
Keyword(s):  
Global Warming ◽  
Alternative Energy ◽  
Electrical Power ◽  
Energy Utilization ◽  
Matlab Simulation ◽  
Battery Charger ◽  
Two Stage ◽  
Good Efficiency ◽  
Transportation Sector ◽  
Alternative Energy Resources

<p><span>Electric power generation and consumption are indicating an unprecedented change in recent decades. Electrical power industry and transportation sector lie at the core of this development and hence this change. This change is one of the major causes of polluting environmental and global warming. </span><span>So, to decrease the dependency on conventional fuels and greenhouse gas emissions, countries around the globe are actively finding alternative energy resources. It will help to develop clean and green energies to build a sustainable society. Simultaneously, energy utilization in the field of transportation is witnessing a change from fossil fuel to electricity-based fuel. Electrified transportation system is a solution to endorse sustainable energy development and addressing environmental pollution, global warming issues. In this paper, an EV battery charger is designed with a two-stage charging model to achieve good efficiency. The design is simulated by using MATLAB simulation and compared with the existing model. The simulation results show that the proposed model is superior to the traditional model.</span></p>

Significance of Transient Exergy Terms in a New Tray Design Solar Desalination Device

2014 ◽  
Vol 137 (1) ◽  
Author(s):  
Gregory J. Kowalski ◽  
Masoud Modaresifar ◽  
Mansour Zenouzi
Keyword(s):  
Energy Recovery ◽  
Alternative Energy ◽  
Energy Systems ◽  
Second Law ◽  
Exergy Destruction ◽  
Renewable Energy Systems ◽  
Solar Desalination ◽  
Second Law Analysis ◽  
Storage Term ◽  
Variable Energy

An investigation of the transient exergy property term, exergy storage, for a new desalination tray design was performed. It was illustrated that exergy destruction rates provide a means of comparing alternative energy solutions and a measure of their sustainability. To satisfy these objectives one needs accurate calculation of exergy destruction rates. It was confirmed that neglecting the exergy storage term is not a valid approximation for the hourly and daily averaged values of the second law analysis. For a solar desalination system neglecting the exergy storage terms introduced a maximum difference in the exergy destruction rate of 7.4% and a difference of 7.3% in the daily average. In the solar desalination process with energy recovery the second law performance is greater than that for the reverse osmosis (RO) process, the chief competitor, when the exergy storage terms are correctly included in the analysis. The results demonstrate that for variable energy sources such as renewable energy systems, the second law analysis provides a measure of the sustainability of competing system and that the exergy storage terms should be included in the analysis.

Sign in / Sign up

Export Citation Format

Share Document