Subhransu Padhee

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• PhD
• Assistant Professor EEE at Sambalpur University Institute of Information Technology

This work depicts modeling and analysis of two-staged power electronic interface used for grid-connected solar photovoltaic generator. The power circuit of power electronic interface comprises of a quadratic boost converter with voltage multiplier cell and 1-ϕ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfon...

Microbial Fuel Cell (MFC) is one of the attractive solution to generate electricity from biodegradable organic matter. But there are different technical challenges such as high source impedance, lower specific power density of MFC and ultra low voltage of MFC which limits the usability of the fuel cell. Different energy harvesting schemes to extrac...

Selection of proper converter topology for photovoltaic-based application is one of the major design challenges faced by power electronics design professional. Impedance matching is one of the necessary and sufficient conditions which transfer power from photovoltaic source to load. Impedance matching achieved by the right DC-DC converter topology...

The focus of this contribution is twofold. The first part aims at the rigorous and complete analysis of pole loci of a simple delayed model, the characteristic function of which is represented by a quasi-polynomial with a non-delay and a delay parameter. The derived spectrum constitutes an infinite set, making it a suitable and simple-enough repres...

This paper studies the effect of right-half plane zero (RPHZ) on the controller design of boost converter. Different techniques to mitigate RHPZ has been discussed in this paper. Circuit analysis of boost converter has been discussed in this paper, and frequency domain controller design for boost converter has been highlighted. The effect of RHPZ o...

Recently machine learning algorithms are widely used for the prediction of different attributes, and these algorithms find widespread applications in a variety of domains. Machine learning in health care has been one of the core areas of research where machine learning models are used on the medical datasets to predict different attributes. This wo...

This study provides a recursive parametric identification scheme for a liquid-saturated steam heat exchanger system. The recursive identification scheme uses block-structured Wiener and Hammerstein models as model structure and recursive least squares estimation scheme as the parameter estimation method. The estimated block-oriented model provides...

The focus of this contribution is twofold. The first part aims at the rigorous and complete analysis of pole loci of a simple delayed model, the characteristic function of which is represented by a quasi-polynomial with a non-delay and a delay parameter. The derived spectrum constitutes an infinite set, making it a suitable and simple-enough repres...

This paper provides an overall design and implementation perspective of a laboratory-scale automated visual inspection system for the beverage industry's production line. A case study has been undertaken where the image processing algorithm inspects the beverage bottle for any defects. Different defects such as improper labeling and improper liquid...

This paper provides a study on the synchronization aspect of star connected $N$ identical chua's circuits. Different coupling such as conjugate coupling, diffusive coupling and mean-field coupling have been investigated in star topology. Mathematical interpretation of different coupling aspects have been explained. Simulation results of different c...

This study provides a project-based learning case study of the design of data acquisition module for the greenhouse system. The project-based learning environment is provided to the final year undergraduate engineering students where the students try to develop a prototype of a greenhouse system equipped with various sensors and actuators. The lear...

This study presents a parametric system identification approach to estimate the dynamics of a chemical plant from experimental data and develops a robust PID controller for the plant. Parametric system identification of the heat exchanger system has been carried out using experimental data and prediction error method. The estimated model of the hea...

The presentation is about the design and implementation of a reconfigurable pulse-width modulation block for control of DC-DC converters.

Hardware Design and implementation of the building blocks of a Phasor Measurement Unit, i.e., GPS Disciplined Oscillator, Power Supply, Programmable 3 Phase Sinewave Generator, Phasor Microprocessor, Display. Opensource hardware and software platforms have been used to achieve the implemented design.

The analytical instrument plays a major role in forensic science, therefore a proper pedagogical approach has to be followed for a proper understanding of the theory as well as the practical application of analytical instruments. This study provides a pedagogical approach of teaching analytical instrumentation in the master degree course of forensi...

Rock deformation analysis in an underground mine is one of the most important safety aspects in the coal mining industry. Dedicated and reliable instrumentation systems are used to get real-time information about rock deformation. Various instruments such as telltales are widely used to warn the personnel inside the mine about a possible roof fall....

This study provides a step-by-step analysis of closed-loop parametric system identification for DC-DC buck converter. In closed-loop parametric identification, input–output experimental data are used to estimate the transfer function coefficients of DC-DC buck converter. For system identification purpose, a high-frequency perturbation signal is inj...

DC–DC converter finds widespread use in variety of applications. DC–DC converter inherently possess nonlinear dynamics, therefore different linearization schemes are used to get a linearized model of the converter. The classical state-space averaging method is one of the most widely used linearizing method for DC–DC converter. But the said lineariz...

This study provides a step-by-step analysis of a parametric system identification procedure which provides a single-input single-output, linear time invariant time-delay model of a liquid-liquid heat exchanger system. Different linear and block-oriented models are used to develop a control relevant identification model. The prediction error method...

To utilize the power generated from renewable energy sources and use it in stand-alone or grid integrated application, power conditioning unit (PCU) is required. The main consideration in designing a PCU is lower cost, higher reliability, higher efficiency, and robust operation. One of the major components of PCU is high-step-up and high-efficient...

An energy storage system plays an important role in the operation of micro-grid and electric vehicle. Battery management system (BMS) in micro-grid and electric vehicle is one of the challenging areas and has witnessed much research interest. This paper provides the design and implementation details of photovoltaic (PV) based charger for lead-acid...

Power electronic converters play an important role in integrating renewable energy sources in to the electrical grid. A power conditioning unit (PCU) which comprises of different power electronic converters is essential to process the power of renewable energy sources and make it useable for stand-alone or grid-tied application. DC-DC converters ar...

Fuel cell is one of the efficient renewable energy storage devices available. This paper provides a detailed electrical modeling of fuel cell system and an overview of required control schemes for fuel cell. Fuel cell provides low DC output which is further processed using power conditioning unit (PCU) comprising of power electronic converter. This...

This paper provides modeling of photovoltaic (PV) panel, designing of maximum power point tracking (MPPT) control algorithm for a standalone PV based distributed generation (DG) system. A detailed mathematical model of PV panel is provided. One of the most classical MPPT (Perturb and Observe MPPT) is used to track the maximum power point of the sys...

This paper describes the design details of a measurement and data acquisition laboratory. The main purpose of this laboratory is to experimentally validate the theoretical concept of sensors, signal conditioning circuits and data acquisition devices. The developed laboratory course emphasizes on theoretical concept of different temperature sensors,...

Multi converter based distributed power system (DPS) comprises of several interconnected switched mode power converters. The large scale implementation of DPS in variety of applications has provided new research directions in modeling and control of switched mode power converter. With evolution of DPS, black box, grey box modeling and identificatio...

Fuel cell is one of the renewable energy sources used extensively in stand-alone as well as grid tied applications. Fuel cell provides a low voltage and high current DC output which has to be properly conditioned according to the demand of load. Therefore, a power conditioning unit (PCU) is essential for processing the unregulated DC voltage. The P...

In this paper, the performance of different tuning methods of PID controller is evaluated. Tuning of PID controller parameters is necessary due to the wide applications of controllers in industry. Different tuning methods such as Empirical Ziegler-Nichols, Cohen-Coon, Chien-Hrones-Reswick and optimum tuning methods are considered. The performance o...

This paper analyzes the performance of different controllers such as feedback, feedback plus feed-forward and internal model controller to regulate the temperature of outlet fluid of a shell and tube heat exchanger to a certain reference value. The transient performance and the error criteria of the controllers are analyzed and the best controller...

Fuel cell unit generally has low voltage DC as output. To increase the output voltage, fuel cell stack is used where number of single unit fuel cell are connected in series or parallel. To step-up or step-down the output voltage of solid oxide fuel cell (SOFC), DC-DC converter is used. The DC output voltage of the converter is converted to AC with...

Fuel cell unit generally has low voltage DC as output. To increase the output voltage, fuel cell stack is used where number of single unit fuel cell are connected in series or parallel. To step-up or step-down the output voltage of solid oxide fuel cell (SOFC), DC-DC converter is used. The DC output voltage of the converter is converted to AC with...

This paper presents a comparative analysis of performance of PID controller and hybrid fuzzy controller for concentration control of isothermal continuous stirred tank reactor, which is used to carry out chemical reactions in an industry. Isothermal continuous stirred tank reactor is one of the types of reactor which operates at a constant temperat...

Conventional PID controller is one of the most widely used controllers in industry, but the recent advancement in fractional calculus has introduced applications of fractional order calculus in control theory. One of the prime applications of fractional calculus is fractional order PID controller and it has received a considerable attention in acad...

Because of the increasing instances of identity theft and terrorism incidences in past few years, biometrics based security system has been an area of quality research. Modern day biometrics is a cutting edge technology which enables the automated system to distinguish between a genuine person and an imposter. Automated face recognition is one of t...

Collection of raw data from different sensors, processing the data and extracting information from it is a very challenging task. Because of the enhanced memory capacity of the present day computers, data logging has reached to a new level. The analyst has to classify the data according to their traits from the offline logged data. The whole task o...

The versatile control characteristics of DC motor have contributed in the extensive use of DC motor in the industry. With the increasing use of power semi conductor units, the speed control of DC motor is increasingly getting sophisticated and precise. Speed of the DC motor is controlled by controlling the armature voltage. Armature voltage is cont...

This paper gives an overview of data acquisition, data logging and supervisory control system of a plant consisting of multiple boilers. Data acquisition, data logging and supervisory control are the basic building blocks of plant automation. This paper takes a case study of plant consisting of multiple boilers where multiple process variables of t...

Shell and tube heat exchanger system is widely used in chemical plants because it can sustain wide range of temperature and pressure. The main purpose of a heat exchanger system is to transfer heat from a hot fluid to a cooler fluid, so temperature control of outlet fluid is of prime importance. To control the temperature of outlet fluid of the she...

In this research paper, an intelligent fuzzy PID controller is developed to control the outlet temperature of a shell and tube heat exchanger. The aim of the proposed controller is to regulate the temperature of the outgoing fluid to a desired level in the shortest possible time irrespective of load and process disturbances, equipment saturation an...