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This paper presents the design procedure of the sliding mode controller in cascaded structure for the output voltage regulation of dual input buck boost converter (DIBB) in continuous conduction mode. The design method is clearly illustrated for dual input buck boost converter with the above control strategy. The simulation results of DIBB for its responses to load and line regulations reveal the...
The present study is aimed at characterizing the EEG dynamics of the Mild cognitive impairment (MCI) subjects compared to that of normal controls using Recurrence Quantification Analysis (RQA) and Cross Recurrence Quantification Analysis (CRQA). EEG from MCI and control subjects are recorded under resting eyes closed (EC) condition. Recurrence rate of RQA and CRQA are calculated for the signals from...
In this paper, an optimized random PWM strategy for multilevel inverters is presented. The proposed optimized pulse width modulation scheme provides an improved performance over random pulse width modulation schemes for multilevel power converters. The total harmonic distortion is taken as the performance index for optimization. The harmonic distortion is optimized using the principle of Genetic algorithm...
This paper presents maximum power point tracking, bus voltage regulation and island detection of a photo voltaic panel using One Cycle Control (OCC). The power generation by renewable energy sources depends highly on atmospheric conditions and due to that they are very chaotic in nature. Hence rapid control becomes an essential requirement for the converters used for power conditioning. Conventionally...
Distributed energy resources (DERs) are necessary due to the increasing demand of electrical energy and depletion of fossil fuels. When DERs are placed in the distribution system, various power quality problems arise including voltage unbalances and current harmonics. These problems arise due to the excess power which is fed back to the network when generation in a particular phase exceeds load demand...
Implementation of Advanced Metering Infrastructures can improve system performance indices like CAIDI and SAIDI. But data generated by AMI systems are now grow to the level of big data by connecting millions of consumers to the smart grid. If high speed data processing techniques are applied then system response time to detect events will be reduced and hence time taken to plan and execute action...
Renewable energy systems become more present in the energy market and wind power has already proven it's potential. The offshore wind farms have also been continuing its growth rapidly due to much better wind conditions like onshore wind farms. The studied system here is a variable speed wind generation system based on Doubly Fed Induction Generator (DFIG). In this topology, stator side converter...
These India is suffering from the problem of meeting peak demand of about 12 %. Demand side management is one of the efficient methods to solve this problem. It can reduce the peak load and thereby facilitate peak load management, smoother grid operation and economic benefits. Demand side management can be started from consumer side by using intelligent loads, both for industries and household. This...
The recovery of original signals from the communication channel without any noise is a difficult task. Many denoising techniques have been proposed for the removal of noises from a digital signal. Wavelet denoising using threshold algorithm is a powerful method for suppressing noise in digital signals. In this paper, an audio denoising technique based on double-density dual-tree discrete wavelet transform...
Long Term Evolution (LTE) represents a significant milestone in broadband mobile communications as it delivers fast global and secure mobile communication technologies for the twenty first century. It features very innovative new air interface technologies such as Orthogonal Frequency division multiplexing (OFDM), Multiple Input Multiple Output (MIMO) antenna technology and fastest link adaptations...
Recently semiconductor industry witnessed a revolutionary change with the development of wide band gap devices namely silicon carbide and gallium nitride. These devices are found to be superior to silicon because of their ability to be operated at high frequency, high temperature and high voltage with reduced switching losses. In this paper a comparison between Silicon and Silicon carbide semiconductor...
Photovoltaic (PV) supported DSTATCOM is proposed in this paper. The existence of harmonic in the power system has increased due to the high usage of power electronics. Harmonics has contributed excessive distortion to the voltage and current waveform and eventually affecting the power system. To improve the performance of ac power systems, we need to manage reactive power in an efficient way. DSTATCOM...
Asmall scale power grid combining various distributed energy resources to form a whole system that can operate independently or in conjunction with the main grid is considered. Proposed model is a grid connected hybrid system consisting of photovoltaic (PV) cells and fuel cells. Dynamic Voltage Restorer (DVR) is a device used to protect the system against sudden changes in voltage. Voltage sag/swell...
Super conducting magnetic energy storage (SMES) may improve the Frequency stability of a system, because of its fast response time in charging and discharging energy. This paper proposed the modelling and control of a hybrid solar photo voltaic, wind energy, Diesel-Engine Generator (DEG) and Superconducting Magnetic Energy Storage systems connected to an isolated power system. Due to random variations...
Provides an abstract for each of the presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings.
A preliminary exploratory and predictive model to correlate the academic performance of a sample of 96 students enrolled in different basic engineering courses with cognitive and social constructs is presented. The model integrates several dimensions regarding Multiple Intelligences, Self-Regulation skills and Learning Styles constructs. The exploratory study is carried out with three statistical...
Digital watermarking has been discussed in the literature for decades. In business perspective, it is important as a potential method for copy right protection, proof of ownership broadcast monitoring etc. In academic perspective, it is an interesting research problem. Audio watermarking is the most challenging of all as Human Auditory System is sensitive to even a very small change to the original...
This paper aims to present an efficient nonlinear current control scheme for a single-phase grid-connected photovoltaic (PV) system in which the controller is designed using partial feedback linearization and a linear controller. The proposed controller solves the difficulty of tuning the gain in conventional linear controllers under changing atmospheric conditions. The performance of the controller...
Negative to positive voltage conversion techniques are used in various applications such as automobiles, space stations and manufacturing industries. The DC-DC topologies used for this purpose include switched capacitor(SC), switched inductor(SI) and Hybrid (SC/SL). But the above mentioned topologies have their own disadvantages as well. Switched capacitor type converters require more number of switches...
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