Advanced and Innovative Optimization Techniques in Controllers: A Comprehensive Review

New commercial power electronic controllers come to the market almost every day to help improve electronic circuit and system performance and efficiency. In DC–DC switching-mode converters, a simple and elegant hysteretic controller is used to regulate the basic buck, boost and buck–boost converters under slightly different configurations. In AC–DC converters, the input current shaping for power factor correction posts a constraint. But, several brilliant commercial controllers are demonstrated for boost and fly back converters to achieve almost perfect power factor correction. In this paper a comprehensive review of the various advanced optimization techniques used in power electronic controllers is presented

Performance of Residential Buildings during Nepal Earthquake

Earthquake do not kill people, unsafe the buildings do. Earthquake is a naturally occurring process in which tectonic plates release strain developed in them over years. Earthquake cannot be avoided. Nepal Earthquake of magnitude 7.8 once again reminds us the need of earthquake resistant design and construction. Extensive loss of human life and property occurred due to this earthquake. In this paper, an effort is made to study the probable cause of failure of buildings in Nepal. Different types of buildings and structures are observed with various structural irregularities and defects. Thus, Safety measures to prevent future damage due to earthquake are also suggested

Design and Implementation of an Innovative Internet of Things (IOT) based Smart Energy Meter

Energy meter is very essential measuring instrument for measuring the power in domestic, industrial etc. environment. Correct and appropriate measuring of power without any error is important in order to calculate the total power consumption and then for tariff calculation. In view of this, in this paper design and implementation on an innovative smart energy meter is proposed. The proposed smart energy meter is based on Internet of Things (IoT) applications. The paper describes its design along with its working

A Comprehensive Review of Smart Energy Meters: An Innovative Approach

Energy meter is an important device used for measuring the power. It is used in customers� homes, industries etc. for measuring the electrical power. A lot of modifications and development has taken place in the construction and operation of the energy meters over a decade. In view of above this paper presents a review of the development of the energy meters and their applications. Energy meters and its different types along with the innovation in this field is been discussed in this paper

Internet of Things (IoT): Research, Architectures and Applications

Internet of Things is the concept of connecting any device (so long as it has an on/off switch) to the Internet and to other connected devices. The IoT is a giant network of connected things and people, all of which collect and share data about the way they are used and about the environment around them. Experts estimate that the IoT will consist of about 30 billion objects by 2020. This paper presents a study based on IoT and its applications in different field of science and technology. Along with the introduction of the IoT literature review is also provided. The paper also discusses the architecture and elements of the IoT along with its different applications

Bacteria as Bio-Template for 3D Carbon Nanotube Architectures

Faculty Research Day 2018: Faculty Competitive Poster WinnerIt is one of the most important needs to develop renewable, scalable and multifunctional methods for the fabrication of 3D carbon architectures. Even though a lot of methods have been developed to create porous and mechanically stable 3D scaffolds, the fabrication and control over the synthesis of such architectures still remain a challenge. Here, we used Magnetospirillum magneticum (AMB-1) bacteria as a bio-template to fabricate light-weight 3D solid structure of carbon nanotubes (CNT) with interconnected porosity. The resulting porous scaffold showed good mechanical stability and large surface area because of the excellent pore interconnection and high porosity. Steered molecular dynamics simulations were used to quantify the interactions between nanotubes and AMB-1 via the cell surface protein MSP-1 and flagellin. The 3D CNT-AMB1 nanocomposite scaffold is further demonstrated as a potential substrate for electrodes in supercapacitor applications

Effects of Elevated Temperature on the Residual Behavior of Concrete Containing Marble Dust and Foundry Sand

Concrete is a composite material that is commonly used in the construction industry. It will certainly be exposed to fires of varying intensities when used in buildings and industries. The major goal of this article was to look into the influence of mineral additions such as foundry sand and marble dust on the residual characteristics of concrete. To examine the behavior of residual characteristics of concrete after fire exposure, marble dust was substituted for cement and fine sand was substituted for foundry sand in varying amounts ranging from 0% to 20%. It aided in the better disposal of waste material so that it might be used as an addition. The purpose of the experiment was to see how increased temperatures affected residual properties of concrete, including flexural strength, compressive strength, tensile strength, static as well as dynamic elastic modulus, water absorption, mass loss, and ultrasonic pulse velocity. At temperatures of 200 °C, 400 °C, 600 °C, 800 °C, and 1000 °C, the typical fire exposure behavior of concrete was investigated. The effects of two cooling techniques, annealing and quenching, on the residual properties of concrete after exposure to high temperatures were investigated in this study. Replacement of up to 10% of the cement with marble dust and fine sand with foundry sand when concrete is exposed to temperatures up to 400 °C does not influence the behavior of concrete. At temperatures above 400 °C, however, the breakdown of concrete, which includes marble dust and foundry sand, causes a rapid deterioration in the residual properties of concrete, primarily for replacement of more than 10%

An Innovative Self-Adaptive Multi-Population Jaya Algorithm based Technique for Evaluation and Improvement of Reliability Indices of Electrical Power Distribution System

An innovative Self-Adaptive multi-population Jaya algorithm based methodology is developed for optimum modifications for failure rate and repair time for a power distribution system. The modifications are with respect to a penalty cost function minimization. The cost function has been minimized subject to the energy based and customer oriented indices. The results obtained by the proposed method have been compared with results obtained with other methods mentioned in the literature. The algorithm has been implemented on a sample radial distribution system

Reliability Enhancement of Distribution System using Teaching Learning based Optimization Considering Customer and Energy based Indices

This paper describes an algorithm for optimum modifications for failure rate and repair time for a radial distribution system. The modifications are with respect to a penalty cost function minimization. The cost function has been minimized subject to the energy based and customer oriented indices. Teaching Learning based optimization (TLBO) has been used for optimization. The algorithm has been implemented on a sample radial distribution system

Self-Adaptive Multi-Population Jaya Algorithm based Reactive Power Reserve Optimization Considering Voltage Stability Margin Constraints

In this paper an innovative technique is proposed to achieve the optimum value of reactive power reserve accounting voltage stability margin constrains. Reactive power reserve and voltage stability are important issues for proper operation on the power system. This is achieved by suitable settings of reactive power control variables. The fitness function has been minimizes using Self-adaptive multi-population based Jaya Algorithm (SAMP - Jaya). The developed algorithm has been implemented on two IEEE test systems