Showing papers by "Rajasthan Technical University published in 2010"
TL;DR: An adaptive method as well as compares with the conventional fixed step size method, effectively improves the MPPT speed and accuracy simultaneously.
Abstract: Power generation with the help of Photovoltaic (PV) arrays is emphasized increasingly and regarded as an important resource of power energy in the coming years. As the power supplied by PV arrays depends upon the insolation, temperature and array voltage, it is necessary to control the operating point to extract the maximum power from the PV arrays. A number of methods for Maximum Power Point Tracking (MPPT) has been reported in the literature. This paper discusses an adaptive method as well as compares with the conventional fixed step size method, effectively improves the MPPT speed and accuracy simultaneously. An adaptive algorithm and two phase dc-dc Converter is exercised as a MPP tracker. Ripple reduction is possible at input and output side of the converter. Mathematical models of converter are developed using state space averaging technique. The tracking responses of the system operating at the solar array MPP are evaluated. A theoretical analysis of the new algorithm in connection with dc-dc converter is provided and its feasibility is also verified by simulation results.
8 citations
11 Mar 2010
TL;DR: An algorithm for order reduction of linear multivariable systems has been presented using the combined advantages of the dominant pole retention method and the error minimization by particle swarm optimization technique to applied successfully to the transfer function matrix of a 10 th order two-input two-output linear time invariant model of a practical power system.
Abstract: An algorithm for order reduction of linear multivariable systems has been presented using the combined advantages of the dominant pole retention method and the error minimization by particle swarm optimization technique. The denominator of the reduced order transfer function matrix is obtained by retaining the dominant poles of the original system while the numerator terms of the lower order transfer matrix are determined by minimizing the integral square error in between the transient responses of original and reduced order models using particle swarm optimization technique. The reduction procedure is simple and computer oriented.The proposed algorithm has been applied successfully to the transfer function matrix of a 10 th order two-input two-output linear time invariant model of a practical power system. The performance of the algorithm is tested by comparing the relevant computer simulation results.
1 citations
01 Jan 2010
TL;DR: In the continuous quest for survival, some species resorted to venom as a logistic for attack and protection and may be used primarily to capture and initiate the digestion of prey or to deter a potential predator.
Abstract: In the continuous quest for survival, some species resorted to venom as a logistic for attack and protection. The venom may be used primarily to capture and initiate the digestion of prey or to deter a potential predator. The venom is meant to enter inside the body of the opponent, may be an aggressor or a prey, and to weaken the strength of the recipient and so it is helpful for the venomous species. The biological systems in the recipient’s body respond assertively to the injected venom. The innate defense mechanism responds to the toxic components in two ways. Firstly, the potentially harmful foreign materials are identified as antigens and antibodies are developed against them by the immune system. Secondly, some of the components in the venom, which are not foreign and whose AbstrAct