Surajit Chattopadhyay

Ghani Khan Choudhury Institute of Engineering & Technology

This papers deals with the thrust failure assessment of quad-copter at starting. This has been achieved by performing stability and fault analysis of quad-rotor helicopter wherein PD and PID controllers used for analysis of an advanced nonlinear cross-coupled dynamic system at normal and fault conditions. Normal, single thrust and diagonal double t...

Detection and assessment of unbalanced conditions in an early stages are of utmost importance for reliable and smooth operation of a grid-connected wind system. This article presents fault assessment in the grid-connected wind system. For this purpose, the grid-connected wind system has been simulated in MATLAB. All symmetrical and unsymmetrical fa...

This study deals with the unsymmetrical fault assessment in a solar–wind hybrid microgrid, analysing the grid current signature, multi‐resolution analysis of discrete wavelet transform and Stockwell transform coefficient's statistical analysis‐based best‐fit solution. The recorded grid current at normal and unsymmetrical faults is analysed using th...

This book covers the diagnosis and assessment of the various faults which can occur in a three phase induction motor, namely rotor broken-bar faults, rotor-mass unbalance faults, stator winding faults, single phasing faults and crawling. Following a brief introduction, the second chapter describes the construction and operation of an induction mot...

This paper focuses on an artificial neural network-based fog computing approach for remote end fault super vision in microgrid systems. The work presented here considers an Artificial Neural Network-based adaptive Line-to-Ground (L-G) and Line-to-Line (L-L) fault monitoring system for a standard IEEE 14 bus microgrid. Discrete Wavelet Transformatio...

The starter motor is responsible for providing the mechanical rotating energy for automotive operation through electromechanical conversion via battery. In case of a fault on the starter motor, the vehicle will fail to operate posing problems for the driver, especially for an emergency service vehicle like an ambulance. The starter motor and its co...

A novel topology for choosing best method to detect the type of fault occurred at any periphery of a radial power network through machine learning has been presented. Firstly, conventional load flow analysis has been performed, and then, different types of sequence parameters have been found for healthy and different fault conditions at peripheral...

For reliable operation, the detection of fault as well as its location are two important challenges to power engineers. This paper presents an approach to focus on judging the location of buses in a power network where faults occurred. A network having radial busfeeder combinations was considered and data are collected from different buses. Then, w...

Low currents and voltage levels in a microgrid system make the fault detection by the conventional method, very difficult. Due to ground faults voltage level drops to a very low level and thus, it becomes even more difficult to detect in case of a microgrid system. In this paper, a method of fault location identification and discrimination of fault...

Structural vibration is critical in designing buildings and foundations for equipment. Planning for a smart city demands effective monitoring of the effects of seismic vibrations that will be possible to implement from a remote end. This paper tries to monitor seismic vibration from the top of a structure using wavelet decompositions. At first, vib...

Nanogrids are small energy grids, powered by various generators often including photovoltaics. For example, a nanogrid might supply a village in a rural area and allow that village to trade its surplus energy. A picogrid is a still smaller energy grid. IRENA defines nanogrids as systems handling up to 5 kW of power while picogrids handle up to 1 kW...

Abstract The snubber circuit plays an important role in motor drives. This paper deals with the detection of the inverter switch snubber circuit resistance fault (ISSCRF) in brushless direct current (BLDC) motors used for robotic applications. This has been carried out in two parts: Fast‐Fourier‐Transform‐based analysis and wavelet‐decomposition‐ba...

Stator Inter-turn fault is one of the most common faults which affect motor operation. Its failure will not only prevent the vehicle from starting but may also cause other adverse problems. In this paper, an automotive system has first been modeled in MATLAB Simulink environment. The starter motor used in this system has been simulated to undergo a...

Ring main system’s stability analysis is of immense importance in recent years to retain the reliability of the lines and to maintain quality power at the consumer end. In this context, this work has been advanced wherein symmetrical fault-based stability analysis has been done in an interconnected power system. Firstly, a system has been built in...

In this paper, parallel arc fault has been diagnosed for a grid-tied hybrid solar system using grid current signature analysis. For this, a PV-wind hybrid system has been developed in the software interface, and a parallel arc fault has been created. The grid current has been captured and assessed using Stock-well Transform-based Skewness value mon...

In order to fulfill the tremendous worldwide demand for electrification, power line professionals will need to adopt rapid, reliable and sustainable solutions. For example, in a fast-developing country like India, which had the largest population without electricity in 2014 and 1.34 billion inhabitants in 2017, the demand for electrification is imm...

With technological advancement, the automobile industry is undergoing a design evolution. There has been an increase in the use of electrically actuated systems; electronics-based control systems, along with an increase in average power consumption. But such increased incorporation has been one of the main causes of roadside breakdowns. However, th...

The state of the ampere‐hour capacity of the battery depends on the condition of materials used in it. Large reduction of capacity ends with maintenance or replacement of the battery. Modern battery materials include application of nanomaterials and nanotechnology in various stages of production. This article attempts to monitor the capacity of bat...

The ever-increasing global energy requirements scenario has been marching toward waste energy management and system optimization. From those perspectives, the scope to utilize unused energy in the form of heat dissipated by power transformers has proven its importance. Moreover, waste heat recovery technology encourages to minimize the difficulties...

available at IEEE Dataport, doi: https://dx.doi.org/10.21227/ff5p-w823

Solar photovoltaic (PV) arrays connected with the microgrid system consist of multiple strings interconnected in different ways. This paper deals the diagnosis of faults that occurred in one or multiple of such strings. Output currents from inverter output terminals of the microgrid system have been captured for assessment. Fast Fourier Transformat...

Line to Ground (LG) and Line to Line (LL) faults are the two most frequently encountered faults in any power system network. For the purpose of designing advanced protection systems, detection of the location as well as the identification of the type of fault, from a remote location is of paramount importance. In this paper a Discrete Wavelet Trans...

This paper deals with hall sensor based very small inter-turn short circuit fault assessment of singlephase quadcopter system using current signature analysis of connected brushless DC motors at the transient condition. Firstly, a quadcopter has been modeled with a proportionaldifferential controller, and roll, pitch, and yaw angles have been adjus...

This paper deals with the brush fault analysis in an Indian DC traction locomotive, monitoring the rectifier input current to the traction motor. The current input to the rectifier has been analysed using multi-resolution analysis of discrete wavelet transform-based statistical parameter analysis to identify the best fit solution for fault diagnosi...

This papers deals with the thrust failure assessment of quad-copter at starting. This has been achieved by performing stability and fault analysis of quad-rotor helicopter wherein PD and PID controllers used for analysis of an advanced nonlinear cross-coupled dynamic system at normal and fault conditions. Normal, single thrust and diagonal double t...

This paper deals with the fault and abnormality analysis in PV array, monitoring the grid-tied hybrid micro-grid current. Firstly, a hybrid system has been built-in software, and a series arc fault has been inserted. The micro-grid current has been recorded and analyzed using Stockwell transform-based statistical parameter monitoring, and optimized...

In this paper, a solar based average model microgrid system has been demonstrated and behaviour of current signals under non identical load conditions have been analyzed. Inverters of various configuarations have been used here to monitor and analysis the performance during rated load, over-load and under- load conditions. First Fourier Transformat...

This work deals with transient and sub-transient nature of electrical parameters based classification of micro grid. Various type of models used in micro grid system using IGBT/Diodes, MOSFET / Diodes, GTO/Diodes, Ideal Switches, Switching – function based VSC, Thyristor, Diodes, Average-Model Based VSC have been studied. Different useful electrica...

This paper deals with harmonic assessment during line to ground fault in a micro-grid system. IEEE 14 bus microgrid system is considered. Fast Fourier Transform (FFT) based harmonic analysis has been carried out both at normal and fault condition. Faults at different load buses like linear load, nonlinear load, furnace, battery charging unit, have...

The paper deals with harmonics assessment based symmetrical fault diagnosis in PV array based microgrid system. This has been achieved by modeling a micro grid system consisting of 400KW PV array based power unit coupled with conventional power grid. Computer simulation performed abnormal condition as well as symmetrical faults at load bus. Both gr...

Solar photo voltaic arrays are normally kept at roof top where monitoring of the arrays is challenging task. In this work, an attempt has been taken to monitor the connectivity of the strings feeding energy to the inverter input of a microgrid. The connectivity of the strings has been monitored using inverter output currents waveform. This has been...

This paper deals with the fault identification in generator and load buses of an isolated renewable energy conversion system, monitoring the Skewness and Kurtosis values of the wavelet decomposition level coefficients. In this study, a standalone wind energy conversion scheme has been considered and the source and load currents at normal and at LL...

This paper deals with the assessment of discrimination between inrush and fault current of power transformer. This has been achieved by capturing primary current of power transformer and analyzed by Radar analysis, Continuous Wavelet Transform (CWT) and Discrete Wavelet Transform (DWT) based skewness, kurtosis, rms and mean value analysis. Differen...

This paper deals with Digital Learning and Training Methodology (DLTM) or Pedagogy (DLTP) in Study of Health Monitoring in RESCO. In a closed room teaching learning process its practically difficult to establish set up for grid connected power system and setup for condition monitoring in all academic institute which can be accessed for all time eve...

This paper deals with the identification of single line-to-ground (LG) fault in a voltage source controller based high voltage direct current (HVDC) link, monitoring the multi-resolution-analysis (MRA)-based discrete wavelet transform (DWT) coefficients. A prototype model has been developed to assess the system at normal and at LG fault at the rece...

This study deals with inter-turn short-circuit assessment of DC traction motors used in railway locomotives. This has been done by analysing input current spectra of rectifier unit feeding the traction motor. The analysis includes multi-resolution analysis and discrete wavelet transform (DWT) of current spectra to calculate approximate and detailed...

This study deals with the application of kurtosis and skewness based approximate and detailed coefficients in walking speed measurement. Gait data (force information of foot and positional information of ankle) are gathered through sensors during level walking on motorised treadmill of normal individuals at various speeds and features are extracted...

The paper explores a novel technique of analysis of Electromyography or EMG signals using Kurtosis of Approximate Coefficients (KA)-based wavelet transform. The approach is applied to speed assessment of level walking of normal individuals. The signals are collected through surface electromyography sensors from three muscles of lower extremity duri...

This volume contains the peer-reviewed proceedings of the International Conference on Modelling and Simulation (MS-17), held in Kolkata, India, 4th-5th November 2017, organized by the Association for the Advancement of Modelling and Simulation Techniques in Enterprises (AMSE, France) in association with the Institution of Engineering Technology (IE...

Microgrid system has been modelled where, three phase inverter has been fed by a number of solar photo voltaic arrays. The output of the inverter has been connected with a three phase step-up transformer couppled with high-voltage grid bus and high-voltage load bus. Load bus line to line short circuit fault has been assessed from inverter terminal....

In this paper an attempt has been taken to detect grounded and ungrounded symmetrical fault in a solar energy fed micro grid system. At first a 400 KW microgrid model with an average model based inverter unit has been modeled. The output of the inverter units feeds to conventional grid as well as load units. Inverter output terminal currents have b...

This paper explores wavelet decomposition based Skewness analysis for walking speed assessment. This has been achieved by using four force sensing resistors attached beneath the foot and one flex sensor attached on ankle. Experimentation is carried out on walking pattern of able individuals and data are collected using data acquiescing set-up and d...

Electrocardiogram (ECG) signal analysis has been done for diagnosis of apnea disease. Some useful statistical parameters are extracted from electrocardiograms and assessment is done. ECG signals are collected from normal healthy persons as well as patients who are suffering from apnea disease for assessment. First, normal ECG signal is collected an...

Electrocardiogram (ECG) signal analysis has been done for diagnosis of apnea disease. Some useful statistical parameters are extracted from electrocardiograms and assessment is done. ECG signals are collected from normal healthy persons as well as patients who are suffering from apnea disease for assessment. First, normal ECG signal is collected an...

The chapter deals with general description of an induction motor followed by different faults. First, construction of induction motor has been discussed. Then a review of induction motor fault has been presented. Faults like rotor broken bar, mass unbalance, stator faults, single phasing, crawling, bearing faults, etc. are discussed along with caus...

The chapter deals with rotor mass unbalance fault. Diagnosis is done both using steady-state signal as well as starting current transients. Concordia is formed using steady-state current and analyzed. The Concordia -based assessment is done using starting current transients. Then radars are formed in Park plane wherefrom the faults are differentiat...

This chapter deals with the assessment of crawling . The assessment is done in Park plane . Steady-state stator currents are transformed into Park plane. Concordia is formed in the Park plane. Presence of 7th harmonics is assessed by the feature pattern extraction method (FPEM ) and the CMS rule set used for harmonic assessment in Park plane from w...

The chapter deals with broken rotor bar fault. Diagnosis is done both using steady-state signal as well as starting current transients. Concordia is formed in Park plane using steady-state current and analyzed. The Concordia-based assessment is done in Park Plane using starting current transients. Then radars are formed in Park plane wherefrom the...

The chapter deals with stator winding faults. Assessments of different types of stator winding fault are discussed in this chapter. Both steady-state and transient current-based diagnosis are covered. Sequence component-based stator fault diagnosis is presented. Park plane is sometime used for fault diagnosis. Different wavelet transformation techn...

This chapter deals with different approaches useful for motor fault diagnosis. It mentions different methods like thermal analysis, acoustics analysis, vibration analysis, etc. Then, mathematical tools used for signal processing and analysis of steady as well as transient currents are discussed. It covers fast Fourier transform (FFT), wavelet trans...

This chapter deals with the diagnosis of single phasing fault in induction motor. Motor current signature analysis (MCSA ) technique has been discussed. Phase angle shift is assessed at single phasing . Steady-state current Concordia is formed and assessed by feature pattern extraction method (FPEM ). Then, radar analysis of line currents and those...

This chapter deals with general discussion and research scope on induction motor fault diagnosis. Fault considered in the book and analytical tools used for motor fault diagnosis has been listed. Then, general discussion on induction motor fault diagnosis has been made. At last research scope in this field has been highlighted.

This paper presents an approach for detection of Current Transformer (CT) saturation and assessment of Root Mean Square (RMS) value of primary current during saturation by Multi Resolution Analysis (MRA). This has been achieved by capturing voltage across secondary of CT and decomposing it by Discrete Wavelet Transform (DWT) for different primary c...

This paper deals with the identification of a faulty load bus, in a multi-bus power system, monitoring the inter-harmonic and sub-synchronous inter-harmonic operating point in P-δ plane, depending on passivity model based Gauss-Seidal iteration technique. In this analysis, real power, load angle and bus voltage have been calculated and the shifting...

The chapter deals with general introduction of the book. First, it mentions the importance of fault diagnosis. Then the role of induction motor and different aspects of induction motor fault analysis have been discussed. Main objective of the book has been mentioned. At the end, books at a glance has been presented with the help of short chapter hi...

This book covers the diagnosis and assessment of the various faults which can occur in a three phase induction motor, namely rotor broken-bar faults, rotor-mass unbalance faults, stator winding faults, single phasing faults and crawling. Following a brief introduction, the second chapter describes the construction and operation of an induction mot...

Induction motors are widely used as electrical drives in industrial application for their good efficiency and reliability in operation. This paper presents a fault detection method of a sinusoidal PWM inverter fed induction machine during single phasing. Stator current harmonics are analyzed by assessing kurtosis and skewness values of harmonic spe...