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.

Illustration and Control of Non-Isolated Multi-Input DC - DC Bidirectional Converter for Electric Vehicles Using Fuzzy Logic controller

Abstract: Due to lack of conventional sources and increased pollution in environment, researchers are forced to evolve the alternate methods for fuel based transport. In 21st sanctuary the electrical vehicles (EVs) emerged as an alternative of the engine based vehicles. Electrical vehicles need reliable and efficient energy storage scheme, power electronic devices, and motor. In this paper we introduce a bidirectional DC-DC converter with non-isolated multi-input topology. In this paper hybrid energy storage scheme (HESS), comprising of an ultra-capacitor clubbed with a suitable battery is used. The benefits of this proposed converter involve batter acceleration, high energy density, enhance battery life and controlled regenerative breaking. A bidirectional converter for multi-inputs is simulated for 1kW power capacity in MATLAB/Simulation software. The fuzzy logic is used to generate the duty ratio and increases the gain of converter to enhance the system performance. The implemented control scheme is proved to be novel and superior to the PI control method.

A Note on Certain Laplace Transforms of Convolution-Type Integrals Involving Product of Two Generalized Hypergeometric Functions

Abstract: The aim of this research paper is to provide as many as forty-five attractive Laplace transforms of convolution type related to the product of generalized hypergeometric functions. These are achieved by employing summation theorems for the series pFp−1 (for , and 5) available in the literature. The obtained research result is to provide an easier method than the existing method.

Analysis and settlement evaluation of an end-bearing granular pile with non-linear deformation modulus

Abstract: Abstract Ground improvement with granular piles increases the load-carrying capacity, reduces the settlement of foundations built on the reinforced ground and is also a good alternative to concrete pile. Granular piles or stone columns are composed of granular material, such as crushed stone or coarse dense sand. An analytical approach based on the continuum approach is presented for the non-linear behaviour of the granular pile. The formulation for pile element displacement is done considering the non-homogeneity of the granular pile as it reflects the true behaviour and also accounts for the changes in the state of the granular pile due to installation, stiffening and improvement effects. The present study shows that the settlement influence factor for an end-bearing granular pile decreases with increase in the relative stiffness of the bearing stratum. The settlement influence factor decreases with increase in linear and non-linear non-homogeneity parameters for all values of relative length. For a shorter pile, the rate of decrease of the settlement influence factor is greater in comparison to that for a longer pile. Shear stress at the soil–granular pile interface reduces in the upper compressible portion of the granular pile and increases in the lower stiffer portion of the granular pile due to the non-homogeneity of an end-bearing granular pile.

Energy Savings in a Building at Different Climatic Zones of India by Using Insulating Materials

Abstract: In India, infrastructure sector presently consumes about 40% of the total generated electric energy and it is estimated to further increase by 36% to make it 76% by the year 2040. Energy consumption in buildings mainly relies upon building’s envelope. In the building sector, especially in commercial buildings: Heating, ventilation, and air-conditioning (HVAC) systems consume a major portion of the overall energy used for thermal comfort. By proper choice of thermal insulating materials, energy consumption can be reduced for winter heating and summer cooling of buildings. Expanded polystyrene (EPS) and extruded polystyrene (XPS) materials are used for the thermal insulation of buildings. In this paper, EPS and XPS insulations are selected with seven different glasses for simulations. Simulations are done with the help of eQUEST 3.63 software. Simulations for building cooling are done for five cities located in five different climatic zones of India, namely Bengaluru, Barmer, Jaipur, Thiruvananthapuram, and Srinagar. For building heating, Srinagar City is selected for simulations. EPS and XPS materials are selected for insulating walls and roof. For exterior windows, single- and double-glazing glasses are selected. Simulation results show that energy savings for various combination of insulating material and window glazing glasses are varying from 4.703 to 25.58% for cooling. In Srinagar for the heating purpose, energy savings are varying from 52.904 to 71.71%.

Design and simulation of microstage having PZT MEMS actuator for 3D movement

Abstract: This paper presents design and simulation of a silicon and microstacked PZT hybrid XYZ microstage whose base material is silicon while PZT is an actuator. The microstacked PZT MEMS actuator, integrated into a silicon microstage with dimension of 20mm × 20mm × 3.16mm is proposed. The microstage is capable to generate large stage area, considerable displacement with high accuracy. The silicon microstage contains moonie structure which helps in further amplify actuation of PZT actuator. Three directional movements are carried out by respective microstacked PZT actuators. The microstacked PZT actuator has a benefit of having high precision and resonance frequency. Micro-positioning stages are used as a system to move an ends with certain degree of freedom. The structure is designed and simulated on COMSOL Multiphysics software based on Finite element method.