APPLICATION OF COVID-19 MPPT ALGORITHM TO SOLAR ENERGY CONVERSION SYSTEM
Authors: Dr.P.Venkatesan, M.Gowsalya, C.Yasodha
Abstract
Solar PV energy conversion system and wind energy conversion system are the alternate sources of energy to the conventional sources such as coal and fossil fuels. By operating the converters, maximum power can be received from the solar and wind energy conversion system. Many Maximum Power Point Tracking (MPPT) controlling techniques are available for solar and wind energy conversion system. This paper proposes two MPPT controlling techniques namely Covid-19 MPPT and FLC based MPPT for solar PV energy conversion system. MATLAB is used to implement the two proposed MPPT techniques. The first proposed Covid-19 method combines the features of incremental conductance and hill climbing methods. The incremental conductance method, calculate the perturbation direction for operating the PV modules. The hill climbing method is simple and less parameters are involved. In incremental conductance method Maximum Power Point (MPP) is reached when dI/dV is equal to the incremental conductance. In hill climbing method the MPP is reached based on the comparison of power in the present and previous instances. In the proposed Covid-19 MPPT controlling technique both incremental conductance and change of power are considered to reach the MPP. This hybrid technique produces maximum output power form solar PV for the different temperature and irradiation levels. Hence the proposed Covid-19 method proceeds in the right direction and quickly reaches the MPP.
A EXPERIMENTAL STUDY ON WATER ABSORBING ROADS
Authors: Sandeep Patel, Sumit Kirar, Uddeshya Singh, Ashwin Parihar,Anurag Tripathi,Ubaid.L Hanfee
Abstract
ue to enormous improvement in construction industry and infrastructure, maximum metrocities in India are getting covered with impermeable concrete pavements. Concreting tends to environmental problems such as fall of recharge of rainwater into the ground hence continuous reduction in water table which leads to water crisis during summer. Installing Pervious Concrete pavement instead of impervious concrete for low traffic volume, we can solve the reduction of water table issue.
NEW COLORING FOR BLOCKS – AUM BLOCK COLORING FOR STANDARD GRAPHS
Authors: A. Uma Maheswari, Bala Samuvel J
Abstract
In this paper, we introduce the new concept of block coloring for graphs. Different kinds of coloring such as coloring of vertices[1], coloring of edges [2] and coloring of faces[3] have already been defined for various types of graphs. As the block graphs find enumerable applicationsin network theory,we introduce the theory of coloring of blocks in graphs, named as block coloring and study on blocking coloring of specific graphs.The main objective of this paper is to introduce coloring of blocks and explicitly define block coloring for path, cycle, complete graph, −barbell graph, windmill graph, friendship graph, cactus graph, bipartite graph and their extensions, with suitable examples.