THD Comparison Of Modified SHE-PSO PWM With LS-PWM, PS-PWM, POD-PWM, APOD-PWM, NLC-PWM Techniques For 17 Level Inverter With Reduced Switch Count
Authors: V. Ramu, Dr. P. Satish Kumar, Dr. G.N. Srinivas
Abstract
This paper focusing onthe comparison of total harmonics distortion (THD) of the output voltage is minimized by the help of a cascade multilevel inverter with reduced number of switches with un-equal DC sources using the conventional PWM techniques and modified SHE PWM using particle swarm optimization (PSO) algorithm. To address the issues of the multilevel inverters with better performance and efficiency there has been increased advancements with level shift PWM technique, phase shift PWM, POD PWM, APOD PWM and NLC PWM. The paper deals with the analysis of some such advancements like particle swarm optimization techniques and is contrasted to pulse width modulation technique in terms of total harmonic reduction, feasibility, switching pattern of PWM techniques and efficiency. Due to the conventional PWM techniques the complexity of the increased number of elements and harmonics can be reduced with the particle swarm optimization technique and can also determine the optimized switching angles in reducing the selected harmonics. The simulations of the analysis are carried out in the Matlab and the same are presented in the paper which are indeed proved to be better for PSO in contrast to conventional PWM techniques.
ANALYSIS OF WINGTIP VORTEX AND MITIGATION BY USING WINGLETS
Authors: Vishnu Venugopal , Vishnu R , Vishnu S S , Shinto George
Abstract
irplanes have played a crucial role in the industrial and commercial development. Therefore it is necessary to have an efficient system for transit through air. The most important component of an airplane is its wing. The aerofoil shape of the wing facilitates the creation of the lift and because of this, it actually flies. Therefore in the design of a wing, it is to be taken into consideration that it has minimal losses. One such loss of lift is due to the vortices produced at the wing tips on the wings. Wingtip vortices are circular patterns of rotating air left behind a wing as it generates lift.
ANTI THEFT FLOORING SYSTEM USING RASPBERRY PI USING IOT
Authors: DR.M.SURESH, A.AMULYA, M.HARI CHANDANA, P.AMANI, T.LAKSHMI PRASANNA
Abstract
The proposed research methodology aims to design a generally implementable framework for providing a house owner/member with the immediate notification of an ongoing theft (unauthorized access to their premises). For this purpose, a rigorous analysis of existing systems was undertaken to identify research gaps. The problems found with existing systems were that they can only identify the intruder after the theft, or cannot distinguish between human and non-human objects.
VIBRATION ANALYSIS OF COMPOSITE MATERIALS
Authors: MANAV JAIN, HEMANT KUMAR, AKASH KUMAR TOMAR , UTKARSH SHARMA
Abstract
The meaning, need, and genesis of composite materials, as well as existing and future uses, are the focus of this research. Using ANSYS, we investigated the influence of vibrational loads on simple composite materials objects and were able to draw a clear comparison between the composite material and the parent metal.. It alludes to some of the important work done by renowned engineers and scientists, whose enormous experience served as a model for this project. The report’s flow is as follows: an introduction, followed by a brief introduction to Fibre Reinforced Composites, specific fields of use of composite materials in the current environment, a literature evaluation of several notable creations, and much more.