Rajasthan Technical University

About: Rajasthan Technical University is a education organization based out in Kota, Rajasthan, India. It is known for research contribution in the topics: Photovoltaic system & PID controller. The organization has 716 authors who have published 1084 publications receiving 4530 citations. The organization is also known as: RTU.

MATLAB-Based Investigation of Multiphase Interleaved Buck-Boost Converter for PV System

Abstract: A photovoltaic (PV) generator exhibits nonlinear voltage-current characteristics and its maximum power point varies with solar radiation. Analytical investigations of the new family of switching converters based on a parallel connection of 𝑁(=4) identical buck-boost converters employed in PV system are presented. The interleaving strategy ensures that all the converters operate at the same switching frequency. Mathematical models developed using the state-space average technique are presented in this paper. Various steady-state performance expressions are also derived. The present converter system has the advantages of reduced size of the converter, and ripple in the total inductor current. The effectiveness of the four-phase interleaved dc-dc converter combined with PV system is demonstrated through simulations carried out in MATLAB environment.

Chlorine decay modelling with contamination simulation for water quality in smart water grid

Abstract: Main objective of this research is to finding the location, where chlorine decay occurs and dosage for booster chlorination is needed to ensure high quality of water in smart water distribution network, which protects against microbiological contamination. In the system a contamination event detection algorithm (which detects a randomly generated contamination event) is applied using a series of experiments by Monte Carlo simulation on realistic water network of CSIR-CEERI Pilani. The proposed system employ a classification module, which will classify that the variation is due to demand pattern or due to contamination occurs. The simulation of network is performed with EPANET software. The water quality data is extracted from EPANET and further uploaded to MATLAB for implementation of algorithm, the interface of EPANET has been integrated with MATLAB through EPANET-MSX file. System is set with a threshold value for required chlorine concentration, every day at a certain time window this chlorine value checked against the measured values. If the measured chlorine is lesser than the required one then using self-monitored capability of system the chlorine level is adjusted to maintain the quality of water. System is employed with a heuristic classification module, in which system produces limits of expected chlorine at each progression for various chlorine detecting areas so as to register the water quality. The sensor estimations are then compared and raises an occasion alert banner when these limits are violated in agreement to a specific rule.

Assessment of Fault Harmonics in Squirrel Cage Induction Motor

Abstract: Squirrel Cage Induction Motor (SCIM) is a perceptive device as its failure has devastating effect due to loss in performance and reliability of power system. This makes constant supervising of SCIM imperative. Harmonics are responsible for many nuisances. Yet, it is one of the eminent parameter of fault recognition in stator current of IM. When motor condition deviates from healthy one, the behaviour of these harmonics changes significantly. Substantial variation is attained in frequency bands about fundamental frequency by presence of extra signature in the signal. The trait of harmonics in a current signal is different for different load conditions for particular motor circumstances. In this paper, Fourier transform technique is used for spectral estimation. It provides the frequency-amplitude representation of the signal which enlightened about the magnitude of each frequency present in signal. The normalised graphical analysis shows that harmonics during the fault has substantial variation from healthy conditions. The work achieved the purpose of understanding and identifying irregularities in harmonics and the conclusion drawn from the test validates that the behaviour of odd harmonics is largely irregular for different load conditions. Also some important deductions by analysis are taken for further fault detection analogies.

Transmission Wheeling Pricing in Embedded Cost Using Modified Amp-Mile and MVA Utility Factor Methods

Abstract: Transmission wheeling pricing is one of the decisive aspects of present open access electricity market. Various methods are available for transmission; however, no method is proved to diverse operating conditions of power system. These methods are not able to quantify the full recovery of embedded cost. All the variables i.e. remaining charges, used circuit capacity are not counted in the existing methods. This Paper explicates two methods, Modified Amp – Mile method and MVA Utility Factor method, to recover embedded cost. Modified Amp-Mile method is customized form of existing Amp-Mile method. In the MVA Utility Factor method, cost allocation is based on marginal participation (MP). It evaluates the cost, using sensitivity analysis of network power. The proposed methods are tested on an IEEE 6 bus system and further verified on Hadoti region real 37 bus system. All the results are presented in Full Recovery Model (FRM) and Partial Recovery Model (PRM).

Design reconfigurable tapered slot antenna

Abstract: A Tapered slot antenna with reconfigurable frequency band is presented in this paper. This tapered slot antenna contains two switchable rectangular slot. The notch band is achieved by a function of diode. A wide bandwidth mode from 3.2–9.5 GHz and narrowband mode can be selected. The pin diodes are used to reconfigure the impedance match and modify the radiation pattern. Measured results shows good performance of the proposed designs.