Production of biodiesel from waste fish fat through ultrasound-assisted transesterification using petro-diesel as cosolvent and optimization of process parameters using response surface methodology
Cosolvent; Fourier transform infrared spectroscopy; Free fatty acid; Homogeneous catalyst; Optimization; Ultrasonication
Biodiesel is a highly promising and viable alternative to fossil-based diesel that also addresses the urgent need for effective waste management. It can be synthesized by the chemical modification of triglycerides sourced from vegetable origin, animal fat, or algal oil. The transesterification reaction is the preferred method of producing biodiesel. However, the non-miscibility of alcohol and oil layer causes excessive utilization of alcohol, catalyst, and a substantial reacting time and temperature. In the current investigation, transesterification of waste fish oil was performed with petro-diesel as cosolvent, under the influence of ultrasound energy. The combination of both techniques is a unique and efficient way to minimize the mass transfer limitations considerably and hence reduces the parameters of the reaction. It is also a sincere effort to comply with the principles of green chemistry. The optimum reaction conditions were obtained using response surface methodology (RSM) that were as follows: molar ratio of methanol to oil 9.09:1, catalyst concentration of 0.97 wt%, cosolvent concentration of 29.1 wt%, temperature 60.1?, and a reacting time 30min. Under these listed conditions, 98.1% biodiesel was achievable, which was in close agreement with the expected result. In addition, the cosolvent removal step from the crude biodiesel was also eliminated as it could be employed as a blended fuel in CI engines. The Author(s) 2024.
Parida S.; Pali H.S.; Chaturvedi A.; Sharma A.; Balasubramanian D.; Ramegouda R.; Tran V.D.; Nguyen V.G.; Shobanabai F.J.J.; Varuvel E.G.
Environmental Science and Pollution Research, Vol-31, No. 17, pp. 25524-25537.
All Open Access; Green Open Access; Hybrid Gold Open Access
ISSN: 9441344; PubMed ID: 38472585; CODEN: ESPLE
Parida S., G.L.Bajaj Institute of Technology and Management, 201306, Greater Noida, India; Pali H.S., Renewable Energy and Alternative Fuel Lab, National Institute of Technology, Srinagar-190006, Jammu-Kashmir, India; Chaturvedi A., Renewable Energy and Alternative Fuel Lab, National Institute of Technology, Srinagar-190006, Jammu-Kashmir, India; Sharma A., Department of Mechanical Engineering, Loknayak Jayprakash Institute of Technology, Chapra-841302, Bihar, India; Balasubramanian D., Department of Mechanical Engineering, Mepco Schlenk Engineering College, Tamil Nadu, Sivakasi, India; Ramegouda R., Department of Mechanical and Automobile Engineering, CHRIST University, Bangalore, India; Tran V.D., PATET Research Group, Ho Chi Minh City University of Transport, Ho Chi Minh City, Viet Nam; Nguyen V.G., Institute of Engineering, HUTECH Universit, Ho Chi Minh City, Viet Nam; Shobanabai F.J.J., Department of Computer Engineering, Faculty of Engineering and Natural Sciences, Istinye University, Istanbul, Turkey, Department of Autotronics, Institute of Automobile Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Tamil Nadu, Chennai, 602105, India; Varuvel E.G., Department of Mechanical Engineering, Faculty of Engineering and Natural Sciences, Istinye University, Istanbul, Turkey, Department of Automobile Engineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Tamil Nadu, Kattankulathur, 603203, India
Efficient Power Conversion in Single-Phase Grid-Connected PV Systems through a Nine-Level Inverter
Efficiency; multilevel inverter; pulse width modulation; reduced switches; THD
In this paper, a novel nine-level inverter-based method for achieving efficient power conversion in single-phase grid-connected photovoltaic (PV) systems is proposed. The traditional two-level inverter has poor power quality and a high harmonic content. By using fewer power switches and adding more voltage levels, the proposed nine-level inverter gets around these restrictions, improving power conversion efficiency and lowering total harmonic distortion (THD). The effectiveness of the indicated technique for accomplishing better power quality and greater overall system efficiency is demonstrated by the simulation findings. A promising approach to improving the efficiency of single-phase grid-connected PV systems is the suggested nine-level inverter. 2023 IEEE.
Parimalasundar E.; Cheepati K.R.; Kamalkumar V.; Suresh K.; Devaraju T.; Kumar B.H.
2023 2nd International Conference on Trends in Electrical, Electronics and Computer Engineering, TEECCON 2023, pp. 1-6.
Institute of Electrical and Electronics Engineers Inc.
https://doi.org/10.1109/TEECCON59234.2023.10335776 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85181532747&doi=10.1109%2fTEECCON59234.2023.10335776&partnerID=40&md5=4fdfea49f1ac8e13cc3e67f88db17c2c
Parimalasundar E., Mohan Babu University (Erstwhile Sree Vidyanikethan Engineering College), Electrical and Electronics Engineering, Tirupati, India; Cheepati K.R., Kandula Sreenivasa Reddy Memorial College of Engineering, Electrical and Electronics Engineering, Kadapa, India; Kamalkumar V., KPR Institute of Engineering and Technology Coimbatore, Electrical and Electronics Engineering, Coimbatore, India; Suresh K., Christ University, Electrical and Electronics Engineering, Bangalore, India; Devaraju T., Mohan Babu University (Erstwhile Sree Vidyanikethan Engineering College), Electrical and Electronics Engineering, Tirupati, India; Kumar B.H., Mohan Babu University (Erstwhile Sree Vidyanikethan Engineering College), Electrical and Electronics Engineering, Tirupati, India
Efficient Integration of Photovoltaic Cells with Multiport Converter for Enhanced Energy Harvesting
Battery; Efficiency; Multiport converter; PV Cell
This research work presents a novel approach for the efficient integration of photovoltaic (PV) cells with a multiport converter to enhance energy harvesting in renewable energy systems. The proposed system combines the advantages of PV technology with the flexibility and scalability of multiport converters, enabling improved power extraction and utilization from solar energy sources. The integration is achieved by employing a multi-input multi-output (MIMO) control strategy, which optimally distributes power among multiple energy storage systems and loads. A comprehensive modeling and analysis of the PV cell characteristics and the multiport converter are conducted to identify the optimal operating conditions. Furthermore, a power management algorithm is developed to dynamically regulate the power flow and maximize the energy harvesting efficiency. The proposed approach demonstrates superior performance compared to traditional single-input single-output converters, achieving higher energy yields and enabling effective integration of PV cells in diverse applications. Simulation results validate the effectiveness of the proposed approach, showcasing its potential to significantly enhance energy harvesting from photovoltaic sources and contribute to the development of sustainable and reliable renewable energy systems. 2023 IEEE.
Parimalasundar E.; Jayakumar S.; Chandrika V.S.; Muthukaruppasamy S.; Devaraju T.; Suresh K.
Proceedings of the 5th International Conference on Inventive Research in Computing Applications, ICIRCA 2023, pp. 1590-1595.
Parimalasundar E., Mohan Babu University, Erst while Sree Vidyanikethan Engineering College, Electrical and Electronics Engineering, Tirupati, India; Jayakumar S., Sri Sairam College of Engineering, Electronics and Communication Engineering, Bengaluru, India; Chandrika V.S., Kpr Institute of Engineering and Technology, Electrical and Electronics Engineering, Coimbatore, India; Muthukaruppasamy S., Velammal Institute of Technology, Electrical and Electronics Engineering, Chennai, India; Devaraju T., Mohan Babu University, Erst while Sree Vidyanikethan Engineering College, Electrical and Electronics Engineering, Tirupati, India; Suresh K., Christ University, Electrical and Electronics Engineering, Bangalore, India
Enhanced Design and Performance Analysis of a Seven-Level Multilevel Inverter for High-Power Applications
The structure and performance analysis of a seven-level multilevel inverter is discussed in this study. Due to their capacity to get around the drawbacks of traditional two-level inverters, like high voltage stress on power devices and harmonic distortion, multilevel inverters have attracted a lot of attention lately. Multiple voltage levels can be produced by the seven-level multilevel inverter which is being proposed because it uses a sequential arrangement of power sources and capacitors. The design methodology involves selecting appropriate power devices and capacitance values to achieve the desired voltage levels while minimizing losses and ensuring reliable operation. Total harmonic distortion (THD), inverter efficiency, and voltage stress on power devices are all considered as part of the performance analysis. In comparison to conventional two-level inverters, simulation results indicate that the proposed seven-level multilevel inverter offers lower THD, increased efficiency, and reduced voltage stress. This research contributes to the advancement of multilevel inverter technology and its potential applications in various power conversion systems. 2023 IEEE.
Parimalasundar E.; Jayakumar S.; Nagajothi P.; Chandrika V.S.; Devaraju T.; Suresh K.
Proceedings of the 2023 2nd International Conference on Augmented Intelligence and Sustainable Systems, ICAISS 2023, pp. 1862-1868.
Parimalasundar E., Mohan Babu University (Erst while Sree Vidyanikethan Engineering College), Electrical and Electronics Engineering, Tirupati, India; Jayakumar S., Sri Sairam College of Engineering, Electronics and Communication Engineering, Bengaluru, India; Nagajothi P., S.A. Engineering College, Electrical and Electronics Engineering, Chennai, India; Chandrika V.S., Kpr Institute of Engineering and Technology, Electrical and Electronics Engineering, Coimbatore, India; Devaraju T., Mohan Babu University (Erst while Sree Vidyanikethan Engineering College), Electrical and Electronics Engineering, Tirupati, India; Suresh K., Christ University, Electrical and Electronics Engineering, Bangalore, India
Strategic Power Factor Management for Elevated Lift and Hoist Performance
Capacitance Bank; Energy Consumption; Induction Motor; Power Factor Correction; Reactive Power Compensation
The paper outlines the design and simulation of active power factor correction for a 100 hp induction motor using MATLAB/Simulink. In this system, the induction motor functions as the primary load, operating with a low power factor. Different load scenarios are simulated to examine the motor's performance. The current drawn from the supply is verified under varying conditions, both with and without the implementation of a variable capacitance bank. The power system network comprises apparatus such as Induction Motors, Power Transformers, and Induction Furnaces, contributing to a low power factor. The resultant low power factor leads to elevated energy consumption. To mitigate this, power factor correction is imperative. Utilizing a variable capacitance proves instrumental in enhancing the power factor. The capacitor compensates for a portion of the reactive power, consequently reducing the total reactive power drawn from the source. This reduction in reactive power contributes to an overall decrease in power consumption. The research focus is on the effective correction of the power factor for a 100 hp induction motor through comprehensive design and simulation using MATLAB/Simulink, providing valuable insights into the impact of variable capacitance on current draw under diverse load conditions. 2024 IEEE.
Parimalasundar E.; Jayakumar S.; Ravikumar R.; Kannan V.K.; Sindhuja R.; Suresh K.
10th International Conference on Advanced Computing and Communication Systems, ICACCS 2024, pp. 270-274.
Parimalasundar E., Mohan Babu University (Erstwhile Sree Vidyanikethan Engineering College), Electrical and Electronics Engineering, Tirupati, India; Jayakumar S., Sri Sairam College of Engineering, Electronics and Communication Engineering, Bengaluru, India; Ravikumar R., Karpagam Institute of Technology, Electrical and Electronics Engineering, Coimbatore, India; Kannan V.K., Knowledge Institute of Technology, Electrical and Electronics Engineering, Salem, India; Sindhuja R., Srm Institute of Science and Technology, Electrical and Electronics Engineering, Chennai, India; Suresh K., Christ University, Electrical and Electronics Engineering, Bengaluru, India
Analysis of Nine Level Single-Phase Cascaded H-Bridge Inverters for EVs
Efficiency; Electric Vehicle Charging; Harmonic distortion; PV energy system; PWM
This paper explores the design and operation of a Modular Nine-Level Inverter (MLI)-Electric Vehicle (EV) charging system, incorporating solar energy to power domestic loads and charge EVs. The system comprises a solar panel, DC-DC regulator, and MLI for efficient energy conversion. The MLI's modular design reduces complexity and enhances efficiency. Equivalent circuits illustrate voltage level generation, while PWM control regulates power device switching for precise output control. Performance metrics, including regulated DC supply voltage and staircase nine-level output voltage, demonstrate the system's capability for diverse applications. A nearly sinusoidal current waveform and harmonic analysis underscore the system's effectiveness in delivering stable power with reduced harmonic distortion. Comparisons between filtered and unfiltered output highlight the importance of filtering techniques in improving power quality. Overall, the MLI-EV charging system showcases advancements in renewable energy integration, offering a versatile solution for sustainable electricity generation and EV charging. 2024 IEEE.
Parimalasundar E.; Jayakumar S.; Sita H.; Jayanthi R.; Hemanth Kumar B.; Suresh K.
2024 3rd International Conference on Smart Technologies and Systems for Next Generation Computing, ICSTSN 2024
https://doi.org/10.1109/ICSTSN61422.2024.10671325 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85205310396&doi=10.1109%2fICSTSN61422.2024.10671325&partnerID=40&md5=c0c2585d09eef4a5ece38497cd87b79a
Parimalasundar E., Mohan Babu University, Erstwhile Sree Vidyanikethan Engineering College, Electrical and Electronics Engineering, Tirupati, India; Jayakumar S., Sri Sairam College of Engineering, Electronics and Communication Engineering, Bengaluru, India; Sita H., Mother Theresa Institute of Engineering and Technology, Electrical and Electronics Engineering, Palamaner, India; Jayanthi R., Karpagam College of Engineering, Electrical and Electronics Engineering, Coimbatore, India; Hemanth Kumar B., Mohan Babu University, Erstwhile Sree Vidyanikethan Engineering College, Dept of EEE, Tirupati, India; Suresh K., Christ University, Electrical and Electronics Engineering, Bangalore, India
Analyzing Dual-Stage Inverter Performance for Solar Grid Integration
Boost converter; Dual-stage inverter; Grid interaction; Photovoltaic; Utility grid
This paper presents a comprehensive analysis of the performance of dual-stage inverters in the context of solar grid integration through simulation. Dual-stage inverters are increasingly recognized for their potential to enhance the efficiency and reliability of solar power systems by mitigating grid disturbances and optimizing energy extraction. Through detailed simulation studies, this research evaluates key performance metrics such as grid stability, power quality, and energy conversion efficiency. The simulation environment enables the exploration of various operational scenarios and system configurations to assess the versatility and robustness of dual-stage inverter solutions. Furthermore, the study investigates the impact of control strategies and parameter variations on the overall performance of dual-stage inverters, providing valuable insights for system optimization and design. 2024 IEEE.
Parimalasundar E.; Jayakumar S.; Sita H.; Muthukaruppasamy S.; Suresh K.; Kumar B.H.
Proceedings of International Conference on Circuit Power and Computing Technologies, ICCPCT 2024, pp. 669-674.
Parimalasundar E., Mohan Babu University (Erstwhile Sree Vidyanikethan Engineering College), Electrical and Electronics Engineering, Tirupati, India; Jayakumar S., Sri Sairam College of Engineering, Electronics and Communication Engineering, Bengaluru, India; Sita H., Mother Theresa Institute of Engineering and Technology, Electrical and Electronics Engineering, Palamaner, India; Muthukaruppasamy S., Velammal Institute of Technology, Electrical and Electronics Engineering, Chennai, India; Suresh K., Christ University, Electrical and Electronics Engineering, Bengaluru, India; Kumar B.H., Mohan Babu University (Erstwhile Sree Vidyanikethan Engineering College), Electrical and Electronics Engineering, Tirupati, India
Investigation of efficient multilevel inverter for photovoltaic energy system and electric vehicle applications
conduction loss; multilevel inverter; pulse-width modulation; switching loss; total harmonic distortion
Introduction. This research presents a simple single-phase pulse-width modulated 7-level inverter topology for renewable system which allows home-grid applications with electric vehicle charging. Although multilevel inverters have appealing qualities, their vast range of application is limited by the use of more switches in the traditional arrangement. As a result, a novel symmetrical 7-level inverter is proposed, which has the fewest number of unidirectional switches with gate circuits, providing the lowest switching losses, conduction losses, total harmonic distortion and higher efficiency than conventional topology. The novelty of the proposed work consists of a novel modular inverter structure for photovoltaic energy system and electric vehicle applications with fewer numbers of switches and compact in size. Purpose. The proposed system aims to reduce switch count, overall harmonic distortions, and power loss. There are no passive filters required, and the constituted optimizes power quality by producing distortion-free sinusoidal output voltage as the level count increases while reducing power losses. Methods. The proposed topology is implemented with MATLAB/Simulink, using gating pulses and various pulse-width modulation methodologies. Moreover, the proposed model also has been validated and compared to the hardware system. Results. Total harmonic distortion, number of power switches, output voltage, current, power losses and number of DC sources are investigated with conventional topology. Practical value. The proposed topology has proven to be extremely beneficial for implementing photovoltaic-based stand-alone multilevel inverter and electric vehicle charging applications. References 16, table 1, figures 18. E. Parimalasundar, R. Jayanthi, K. Suresh, R. Sindhuja.
Parimalasundar E.; Jayanthi R.; Suresh K.; Sindhuja R.
Electrical Engineering and Electromechanics, Vol-2023, No. 4, pp. 47-51.
National Technical University "Kharkiv Polytechnic Institute"
All Open Access; Gold Open Access; Green Open Access
Parimalasundar E., Department of Electrical & Electronics Engineering, Sree Vidyanikethan Engineering College, AP, Tirupati, 517102, India; Jayanthi R., Department of Electrical and Electronics Engineering, Karpagam College of Engineering, Coimbatore, 641021, India; Suresh K., Department of Electrical and Electronics Engineering, Christ (Deemed to be University), Bangalore, India; Sindhuja R., Department of Electrical & Electronics Engineering, Sree Vidyanikethan Engineering College, AP, Tirupati, 517102, India
Performance investigation of modular multilevel inverter topologies for photovoltaic applications with minimal switches
fast Fourier transform; multilevel inverter; photovoltaic; pulse width modulation techniques; total harmonic distortion
Introduction. In recent years, a growing variety of technical applications have necessitated the employment of more powerful equipment. Power electronics and megawatt power levels are required in far too many medium voltage motor drives and utility applications. It is challenging to incorporate a medium voltage grid with only one power semiconductor that has been extensively modified. As a result, in high power and medium voltage settings, multiple power converter structure has been offered as a solution. A multilevel converter has high power ratings while also allowing for the utilization of renewable energy sources. Renewable energy sources such as photovoltaic, wind, and fuel cells may be readily connected to a multilevel inverter topology for enhanced outcomes. The novelty of the proposed work consists of a novel modular inverter structure for solar applications that uses fewer switches. Purpose. The proposed architecture is to decrease the number of switches and Total Harmonic Distortions. There is no need for passive filters, and the proposed design enhances power quality by creating distortion-free sinusoidal output voltage as the level count grows while also lowering power losses. Methods. The proposed topology is implemented with MATLAB / Simulink, using gating pulses and various pulse width modulation methodologies. Moreover, the proposed model also has been validated and compared to the hardware system. Results. Total harmonic distortion, number of power switches, output voltage and number of DC sources are compared with conventional topologies. Practical value. The proposed topology has been very supportive for implementing photovoltaic based multilevel inverter, which is connected to large demand in grid. References 12, table 5, figures 23. E. Parimalasundar, N.M.G. Kumar, P. Geetha, K. Suresh.
Parimalasundar E.; Kumar N.M.G.; Geetha P.; Suresh K.
Electrical Engineering and Electromechanics, Vol-2022, No. 6, pp. 28-34.
Parimalasundar E., Department of Electrical & Electronics Engineering, Sree Vidyanikethan Engineering College, AP, Tirupati, 517102, India; Kumar N.M.G., Department of Electrical & Electronics Engineering, Sree Vidyanikethan Engineering College, AP, Tirupati, 517102, India; Geetha P., Department of Electronics and Communication Engineering, Sree Vidyanikethan Engineering College, AP, Tirupati, 517102, India; Suresh K., Department of Electrical and Electronics Engineering, Christ (Deemed to be University), Bangalore, India
Performance investigations of five-level reduced switches count ?-bridge multilevel inverter
H-bridge multilevel inverter; pulse width modulation; switching losses; total harmonic distortion
Introduction. This research paper describes a simple five-level single-phase pulse-width modulated inverter topology for photovoltaic grid applications. Multilevel inverters, as opposed to conventional two-level inverters, include more than two levels of voltage while using multiple power switches and lower-level DC voltage levels as input to produce high power, easier, and less modified oscillating voltage. The H-bridge multilevel inverter seems to have a relatively simple circuit design, needs minimal power switching elements, and provides higher efficiency among various types of topologies for multi-level inverters that are presently accessible. Nevertheless, using more than one DC source for more than three voltage levels and switching and conduction losses, which primarily arise in major power switches, continue to be a barrier. The novelty of the proposed work consists of compact modular inverter configuration to connect a photovoltaic system to the grid with fewer switches. Purpose. The proposed system aims to decrease the number of switches, overall harmonic distortions, and power loss. By producing distortion-free sinusoidal output voltage as the level count rises while lowering power losses, the constituted optimizes power quality without the need for passive filters. Methods. The proposed topology is implemented in MATLAB/Simulink with gating pulses and various pulse width modulation technique. Results. With conventional topology, total harmonic distortion, power switches, output voltage, current, power losses, and the number of DC sources are investigated. Practical value. The proposed topology has proven to be extremely useful for deploying photovoltaic-based stand-alone multilevel inverters in grid applications. References 18, table 2, figures 15. 2023, National Technical University "Kharkiv Polytechnic Institute". All rights reserved.
Parimalasundar E.; Muthukaruppasamy S.; Dharmaprakash R.; Suresh K.
Electrical Engineering and Electromechanics, Vol-2023, No. 6, pp. 58-62.
Parimalasundar E., Department of Electrical & Electronics Engineering, Mohan Babu University (Erstwhile Sree Vidyanikethan Engineering College), AP, Tirupati, 517102, India; Muthukaruppasamy S., Electrical and Electronics Engineering, Velammal Institute of Technology, Anna University, TN, Panchetti, 601204, India; Dharmaprakash R., Department of Electrical and Electronics Engineering, Panimalar Engineering College, Chennai, 600123, India; Suresh K., Department of Electrical and Electronics Engineering, Christ (Deemed to be University), Bangalore, India
Fault diagnosis in a five-level multilevel inverter using an artificial neural network approach
artificial neural network; fast Fourier transform; multilevel inverter; sinusoidal pulse width modulation; total harmonic distortion
Introduction. Cascaded H-bridge multilevel inverters (CHB-MLI) are becoming increasingly used in applications such as distribution systems, electrical traction systems, high voltage direct conversion systems, and many others. Despite the fact that multilevel inverters contain a large number of control switches, detecting a malfunction takes a significant amount of time. In the fault switch configurations diode included for freewheeling operation during open-fault condition. During short circuit fault conditions are carried out by the fuse, which can reveal the freewheeling current direction. The fault category can be identified independently and also failure of power switches harmed by the functioning and reliability of CHB-MLI. This paper investigates the effects and performance of open and short switching faults of multilevel inverters. Output voltage characteristics of 5 level MLI are frequently determined from distinctive switch faults with modulation index value of 0.85 is used during simulation analysis. In the simulation experiment for the modulation index value of 0.85, one second open and short circuit faults are created for the place of faulty switch. Fault is identified automatically by means of artificial neural network (ANN) technique using sinusoidal pulse width modulation based on distorted total harmonic distortion (THD) and managed by its own. The novelty of the proposed work consists of a fast Fourier transform (FFT) and ANN to identify faulty switch. Purpose. The proposed architecture is to identify faulty switch during open and short failures, which has to be reduced THD and make the system in reliable operation. Methods. The proposed topology is to be design and evaluate using MATLAB/Simulink platform. Results. Using the FFT and ANN approaches, the normal and faulty conditions of the MLI are explored, and the faulty switch is detected based on voltage changing patterns in the output. Practical value. The proposed topology has been very supportive for implementing non-conventional energy sources based multilevel inverter, which is connected to large demand in grid. References 22, tables 2, figures 17. E. Parimalasundar, R. Senthil Kumar, V.S. Chandrika, K. Suresh.
Parimalasundar E.; Senthil Kumar R.; Chandrika V.S.; Suresh K.
Electrical Engineering and Electromechanics, Vol-2023, No. 1, pp. 31-39.
Parimalasundar E., Department of Electrical & Electronics Engineering, Sree Vidyanikethan Engineering College, AP, Tirupati, 517102, India; Senthil Kumar R., Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, TN, Chennai, 603203, India; Chandrika V.S., Department of Electrical and Electronics Engineering, KPR Institute of Engineering and Technology, TN, Coimbatore, 641407, India; Suresh K., Department of Electrical and Electronics Engineering, Christ (Deemed to be University), Bangalore, India
Fault Analysis and Compensation in a Five Level Multilevel DC-AC Converter
5-Level; common mode voltage; high frequency mitigation; Neutral clamped active (NCA) inverter; Total Harmonic Distortion
Existing Neutral clamped active (NCA) inverters have the property of high frequency common mode voltage, which can reduce the severity with less voltage gain. A newly designed five level (5L) NCA inverter can capable have achieved voltage step-up with a one stage inversion process. The proposed circuit common ground enhances DC link voltage usage while also mitigating common mode voltage with high frequency. The proposed topology is more compact and has less voltage stress than the conventional two stage topology. The proposed circuit contains merely seven power switches and two capacitors, whereas the conventional topology has ten switches and three capacitors, resulting in a more efficient layout. The proposed topology is developed in the simulink platform, and the simulation results are validated in a proto-type model with a power rating of 2000 W to validate its feasibility and performance with fault clearance capabilities. 2023, TUBITAK. All rights reserved.
El-Cezeri Journal of Science and Engineering, Vol-10, No. 1, pp. 99-108.
https://doi.org/10.31202/ecjse.1164246 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147803373&doi=10.31202%2fecjse.1164246&partnerID=40&md5=6f41a9c98503dbbc8ce9c841a8d13909
Parimalasundar E., Department of EEE, Sree Vidyanikethan Engineering College, Tirupati, India; Suresh K., Department of EEE, Christ deemed to be University, Bengaluru, India
A Performance Investigations of Modular Multilevel Inverter with Reduced Switch Count
Inverter topology; multilevel inverter; pulse width modulation; reduced switches; THD
A multilevel inverter is a special variant of converter for dc-Ac conversion in medium and high voltage and power requirements. In this paper, a novel configuration with fewer switches needed has been developed for the staircase output voltage levels. Two direct current voltage sources and eight transistors are required to synthesize five levels across the load using the conventional topology. The modular topology has two dc voltage sources, and six switches with a five-level output. Using the optimum multi-carrier pulse width modulation approach, the voltage quality is enhanced and total harmonic distortion is reduced. Furthermore, the viability of the proposed topology in contrast to the conventional cascaded H-bridged multilevel inverter with five levels is established by presenting comparable results showing reduced power losses with varied modulation indexes and increased efficiency. The simulation analysis has been carried out using the MATLAB/SIMULINK tool. 2022 IEEE.
Parimalasundar E.; Suresh K.; Sindhuja R.; Manikandan K.
Proceedings of 2022 International Conference on Intelligent Innovations in Engineering and Technology, ICIIET 2022, pp. 83-87.
https://doi.org/10.1109/ICIIET55458.2022.9967595 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144621589&doi=10.1109%2fICIIET55458.2022.9967595&partnerID=40&md5=c2c95f4952491dae8c5b0cc282e9cd86
Parimalasundar E., Sree Vidyanikethan Engineering College, Department of EEE, Tirupati, India; Suresh K., Christ University, Department of EEE, Bangalore, India; Sindhuja R., Sree Vidyanikethan Engineering College, Department of EEE, Tirupati, India; Manikandan K., Sree Vidyanikethan Engineering College, Department of EEE, Tirupati, India
Flat Unglazed Transpired Solar Collector: Performance Probability Prediction Approach Using Monte Carlo Simulation Technique
Monte Carlo simulation; probability prediction; solar energy; unglazed transpired solar collector (UTC)
Engineering applications including food processing, wastewater treatment, home heating, commercial heating, and institutional heating successfully use unglazed transpired solar collectors (UTCs). Trapping of solar energy is the prime goal of developing an unglazed transpired solar collector. The UTC is usually developed in and around the walls of the building and absorbs the solar energy to heat the air. One of the key challenges faced by the UTC designer is the prediction of performance and its warranty under uncertain operating conditions of flow variables. Some of the flow features are the velocity distribution, plate temperature, exit temperature and perforation location. The objective of the present study was to establish correlations among these flow features and demonstrate a method of predicting the performance of the UTC. Hence, a correlation matrix was generated from the dataset prepared after solving the airflow over a perforated flat UTC. Further, both strong and weak correlations of flow features were captured through Pearsons correlation coefficient. A comparison between the outcomes from a linear regression model and that of computational simulation was showcased. The performance probability for the UTC was interlinked with correlation matrix data. The Monte Carlo simulation was used to predict the performance from random values of the flow parameters. The study showed that the difference between the free stream value of temperature and the value of temperature inside the UTCs chamber varied between 15 and 20 C. The probability of achieving system efficiency greater than 35% was 55.2%. This has raised the hope of recommending the UTC for drying and heating where the required temperature differential is within 20 C. 2022 by the authors.
Parimita Panigrahi S.; Kumar Maharana S.; Rajashekaraiah T.; Gopalashetty R.; Sharifpur M.; Ahmadi M.H.; Saleel C.A.; Abbas M.
https://doi.org/10.3390/en15238843 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143800353&doi=10.3390%2fen15238843&partnerID=40&md5=67f70b318a0104182317ee56f4d99c4d
Parimita Panigrahi S., Department of Mechanical and Automobile Engineering, School of Engineering and Technology, CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India; Kumar Maharana S., Department of Aeronautical Engineering, Acharya Institute of Technology, Karnataka, Bangalore, 560107, India; Rajashekaraiah T., Department of Mechanical and Automobile Engineering, School of Engineering and Technology, CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India; Gopalashetty R., Department of Mechanical and Automobile Engineering, School of Engineering and Technology, CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India; Sharifpur M., Department of Mechanical and Aeronautical Engineering, University of Pretoria, Hatfield, 0028, South Africa, Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, 404327, Taiwan; Ahmadi M.H., Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, 3619995161, Iran; Saleel C.A., Department of Mechanical Engineering, College of Engineering, King Khalid University, P.O. Box 394, Abha, 61421, Saudi Arabia; Abbas M., Electrical Engineering Department, College of Engineering, King Khalid University, P.O. Box 394, Abha, 61421, Saudi Arabia, Electronics and Communications Department, College of Engineering, Delta University for Science and Technology, Gamasa, 35712, Egypt
On building up a closer psychic distance as a fundamental ground of relationship between India and Korea: Focusing on Jeonlanam-Do in Korea
IMS; India; international market selection; Jeonlanam-Do; Korea; psychic distance
The Uppsala model (Johanson and Wiedersheim-Paul, 1975) identifies cultural differences, market attractiveness, and core competence of nations or firms as the key factors affecting international market selection. Among these three factors, psychic distance caused by cultural differences is regarded as the most important factor. However, the psychic distance between India and Korea is not very close. The main objective of this paper is to examine the ways to boost economic relationships between India and Korea by building up a closer relationship of psychic distance. We suggest Jeonlanam-Do including Gwangju Metropolitan City (JDGC) in Korea as a stepping stone to make both countries' psychic distance closer as JD has several common grounds of intangible assets with India which includes its adherence to democracy, human rights and peace; the diverse food culture; and the religious zeal to Buddhism. We propose these common interests as a way to enhance the awareness of national brand 'India' in Korea which will attribute to a strategically developed economic relationship between Korea and India. 2022 Inderscience Enterprises Ltd.. All rights reserved.
International Journal of Business Excellence, Vol-26, No. 3, pp. 370-377.
https://doi.org/10.1504/IJBEX.2022.122474 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129229067&doi=10.1504%2fIJBEX.2022.122474&partnerID=40&md5=d4b0f3ac728257e83923e3029c7d5b49
Park D.H., Graduate School of Business, Chonnam National University, Gwangju, South Korea; Cheriyan N.K., Department of Commerce, CHRIST (Deemed to Be University), Bangalore, India; Yeon G., Department of Economics, CHRIST (Deemed to Be University), Bangalore, India
Comparison of the inter-item correlations of the Big Five Inventory-10 (BFI-10) between Western and non-Western contexts
BFI-10; Brief scales; Inter-item correlations; Omega coefficient; Personality traits; Western vs. non-Western countries
The Big Five Inventory-10 (BFI-10; Rammstedt & John, 2007) is one of many short versions of personality inventories that measure the Big Five trait dimensions. Short versions of scales often present methodological challenges as a trade-off for their convenience. Based on samples from 28 countries (N = 10,560), the current study investigated inter-item correlations estimated using Omega coefficients within each of the five personality characteristics measured by the BFI-10. Results showed that inter-item correlations were significantly lower, in the sample data from non-Western countries compared with the Western countries, for three of the five personality traits, specifically Conscientiousness, Extraversion, and Emotional Stability. Our findings indicate that the psychometric challenges exist across different cultures and traits. We offer recommendations when using short-item scales such as BFI-10 in survey research. 2022 Elsevier Ltd
Park J.; van den Broek K.L.; Bhullar N.; Ogunbode C.A.; Schermer J.A.; Doran R.; Ardi R.; Hanss D.; Maran D.A.; Albzour M.; Aquino S.D.; Ayanian A.H.; Chegeni R.; Chukwuorji J.C.; Enea V.; Ghanbarian E.; Ghorayeb J.; Jiang F.; Kehinde O.A.; Lins S.; Lomas M.J.; Lu S.; Marot T.; Mbungu W.; Navarro-Carrillo G.; Onyutha C.; Reyes M.E.S.; Salmela-Aro K.; Sollar T.; Tahir H.; Tan C.-S.; Torres-Mar J.; Tsubakita T.; Volkodav T.; Wlodarczyk A.; Yadav R.
Personality and Individual Differences, Vol-196
https://doi.org/10.1016/j.paid.2022.111751 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131564626&doi=10.1016%2fj.paid.2022.111751&partnerID=40&md5=3a5c1b46efed3d53ef953128b19a2cc0
Park J., School of Management, NUCB Business School, Japan; van den Broek K.L., Copernicus Institute of Sustainable Development, Utrecht University, Netherlands, Research Centre for Environmental Economics, Heidelberg University, Germany; Bhullar N., School of Psychology, University of New England, NSW, Australia, Discipline of Psychology, Edith Cowan University, Australia; Ogunbode C.A., School of Psychology, University of Nottingham, UK, United Kingdom; Schermer J.A., Department of Management and Organisational Studies, Faculty of Social Science, University of Western Ontario, Canada; Doran R., Department of Psychosocial Science, Faculty of Psychology, University of Bergen, Bergen, Norway; Ardi R., Department of Psychology, Universitas Airlangga, Indonesia; Hanss D., Department of Social Sciences, Darmstadt University of Applied Sciences, Germany; Maran D.A., Department of Psychology, University of Torino, Turin, Italy; Albzour M., Department of Social and Behavioral Science, Birzeit University, Palestine; Aquino S.D., Psychology Department, Pontifical Catholic University of Rio de Janeiro, Brazil; Ayanian A.H., The Institute for Interdisciplinary Research on Conflict and Violence, Bielefeld University, Germany; Chegeni R., PROMENTA Research Center, Department of Psychology, University of Oslo, Oslo, Norway; Chukwuorji J.C., Department of Psychology, University of Nigeria, Nigeria; Enea V., Department of Psychology, Alexandru Ioan Cuza University of Iasi, Ia?i, Romania; Ghanbarian E., Department of Human Ecology, University of Alberta, Canada; Ghorayeb J., Department of Psychology, Zayed University, Dubai, United Arab Emirates; Jiang F., Department of Human Resources and Organisational Behaviour, University of Greenwich, Beijing, China; Kehinde O.A., Department of Psychology, Obafemi Awolowo University, Ife, Nigeria; Lins S., Faculty of Psychology and Education Sciences, University of Porto, Portugal; Lomas M.J., School of Health and Society, University of Salford, UK, United Kingdom; Lu S., School of Applied Social Sciences, De Montfort University, UK, United Kingdom; Marot T., Psychology Department, Pontifical Catholic University of Rio de Janeiro, Brazil; Mbungu W., Department of Civil and Water Resources Engineering, School of Engineering and Technology, Sokoine University of Agriculture, Morogoro, Tanzania; Navarro-Carrillo G., Department of Psychology, University of Ja, Spain; Onyutha C., Department of Civil and Environmental Engineering, Kyambogo University, Uganda; Reyes M.E.S., Department of Psychology, College of Science, University of Santo Tomas, Manila, Philippines; Salmela-Aro K., Department of Educational Sciences, University of Helsinki, Helsinki, Finland; Sollar T., Department of Psychological Sciences, Faculty of Social Sciences and Healthcare, Constantine the Philosopher University in Nitra, Nitra, Slovakia; Tahir H., Department of Psychosocial Science, Faculty of Psychology, University of Bergen, Bergen, Norway; Tan C.-S., Department of Psychology and Counselling, Faculty of Arts and Social Science, Universiti Tunku Abdul Rahman, Kampar, Malaysia; Torres-Mar J., Department of Research Methods in Behavioural Sciences, University of Granada, Granada, Spain; Tsubakita T., Faculty of Management, Nagoya University of Commerce and Business, Japan; Volkodav T., Faculty of Pedagogy, Psychology and Communicative Studies, Kuban State University, Krasnodar, Russian Federation; Wlodarczyk A., Escuela de Psicolog, Facultad de Humanidades, Universidad Catica del Norte, Antofagasta, Chile; Yadav R., School of Business and Management, Christ University, Bangalore, India
Fractional study of a novel hyper-chaotic model involving single non-linearity
Hyperchaos; Mathematical modeling; Numerical method; Numerical simulation
The applications of hyperchaotic systems (HCSs) can be widely seen in diverse fields associated with engineering due to their complicated dynamics, randomness, and high delicacy and sensibility. In the present work, we aim to investigate a new hyper-chaotic system involving a single non-linearity under the fractional CaputoFabrizio (CF) derivative for the first time. In fact, there is no previous study using fractional derivatives in this system. A new mathematical system using a fractional-order operator will be designed with the novel operator. The CaputoFabrizio non-integer operator is aimed to be employed to capture complex nature. In order to solve the extracted dynamical system, a quadratic numerical scheme is applied. This study contains stability and convergence sections for the considered method. Moreover, numerical results of the problem under various values of fractional orders and different values of initial conditions (ICs) are provided to show the performance of the suggested scheme. Figures of solutions for each dependent variable can be observed. 2022 The Author(s)
Partohaghighi M.; Veeresha P.; Akg A.; Inc M.; Riaz M.B.
https://doi.org/10.1016/j.rinp.2022.105965 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138053598&doi=10.1016%2fj.rinp.2022.105965&partnerID=40&md5=7aa1cafb32c9dae3a3c1cb146f3788f3
Partohaghighi M., Department of Mathematics, Clarkson University, United States; Veeresha P., Centre for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bengaluru, 560029, India; Akg A., Department of Mathematics, Art and Science Faculty, Siirt University, Siirt, 56100, Turkey, Near East University, Mathematics Research Center, Department of Mathematics, Near East Boulevard, Nicosia/Mersin 10, PC: 99138, Turkey; Inc M., Department of Mathematics, Science Faculty, Firat University, Elazig, Turkey, Department of Medical Research, China Medical University, Taichung, Taiwan; Riaz M.B., Faculty of Technical Physics, Information Technology and Applied Mathematics, Lodz University of Technology, Lodz, 90-924, Poland, Department of Mathematics, University of Management and Technology, Lahore, 54770, Pakistan
Performance optimization for extraction, transformation, loading and reporting of data
Business Intelligence; Data Warehouse; ERP Services; ETL tool; NetWeaver; Performance Optimization; SAP
Enterprise Resource Planning has become the cornerstone for making data acquisition and related operations more efficient. Recent advances in hardware and software technologies have enabled us to think about performance optimization. Ninety percent of ERP projects spend more than their allocated budgets and have exceeded the time schedule for implementation. There are many factors that can be attributed to the low success rate of implementation but one main factor is the performance of the ERP package itself. In this paper, we have described the Business Intelligence tool and database which is related to Systems, Applications and Products. It is popularly known as SAP. Based on this, a new, mulch-dimensional performance metric is proposed for extracting, transforming, loading and reporting the data. 2015 IEEE.
Global Conference on Communication Technologies, GCCT 2015, pp. 516-519.
https://doi.org/10.1109/GCCT.2015.7342715 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960154534&doi=10.1109%2fGCCT.2015.7342715&partnerID=40&md5=de2cab78b67a3b101f09376e9c894c44
Parul, Christ University, Bangalore, India; Nawab S., Christ University, Bangalore, India; Teggihalli S., Christ University, Bangalore, India
Photon, Electron, Proton and Alpha Particle Interaction Parameters of Different Clays
Clay samples; Mass attenuation coefficient; Mass stopping power; Radiation shielding; Zeff
Modern life has made human beings and nature vulnerable to harmful radiations at different levels. This can be a great health hazard of our times. Since there is no probability of dodging the harmful influence, the practical way out is having protective shielding. Lead, the most efficient attenuator in current use has the drawbacks of being heavy, toxic and capable of producing secondary radiations. Other attenuators concrete, glass etc. have similar deficits in use. This is the context of the scientific world's quest for a perfect shielding material which can provide protection from harmful radiations effectively, economically and environment friendly. This work attempts a computational study on the radiation shielding efficiency of different types of clays, understanding of which would enable its applications for radiation shielding. The presence of high Z elements and the layered structure of clay along with its good thermal stability make it ideal filler for an effective radiation shield. In this work, we have performed a systematic study of the mass attenuation coefficients, effective atomic number and electron density of various clay samples. 2022 American Institute of Physics Inc.. All rights reserved.
Parvathi V.; Bubbly S.G.; Gudennavar S.B.
https://doi.org/10.1063/5.0108294 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144048018&doi=10.1063%2f5.0108294&partnerID=40&md5=abf34fc862da4482a5ae2ff83a10dd5a
Parvathi V., Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore Central Campus, Karnataka, Bengaluru, 560029, India; Bubbly S.G., Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore Central Campus, Karnataka, Bengaluru, 560029, India; Gudennavar S.B., Department of Physics and Electronics, CHRIST (Deemed to be University), Bangalore Central Campus, Karnataka, Bengaluru, 560029, India
Financial capability and financial wellbeing of women in community-based organizations: mediating role of decision-making ability
Capability; Community-based organizations; Decision-making ability; Financial inclusion; Financial literacy; Social work; Wellbeing
Purpose: Financial capability is considered to be an important concept that has drawn the attention of many world nations. While the literature suggests various studies on financial capability and financial wellbeing, focus on their combined significance has been limited. The purpose of this paper is to examine how financial capability affects the financial wellbeing of women in community-based organizations and how decision-making ability mediated this relationship. Design/methodology/approach: In total, 1,000 women who are associated with the community-based organization Kudumbashree in the state of Kerala, India participated in the survey-based study. Findings: The structural equation modelling results show that there exists a significant relationship between financial capability and the financial wellbeing of women in CBOs. Further, decision-making ability was identified as a significant mediator in this relationship thus establishing a partial mediation effect. Practical implications: The financial social workers can focus their activities on promoting financial capability and decision making aspects of women from middle/low income families to facilitate their financial wellbeing. The scope for financial socialisation and proper orientation is more for the women associated with the community based organisations. This opportunity can be made use by the government authorities and other practitioners to change their financial outlook and contribute towards the empowerment of these women from the grass root level. Originality/value: The studies related to financial literacy and financial inclusion are available in the Indian context, but the conceptualization of financial capability is still an under-researched area in India. Hence, this study is an attempt to explain the capability-wellbeing relationship from a financial point of view in the Indian context, and further establishes its connection with the individual's decision-making ability. To strengthen the research base, the study was conducted among the women in the community-based organization who belong to middle and low-income families. 2022, Emerald Publishing Limited.
Managerial Finance, Vol-48, No. 45939, pp. 1513-1529.
https://doi.org/10.1108/MF-05-2021-0234 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85132422605&doi=10.1108%2fMF-05-2021-0234&partnerID=40&md5=0268842cd5141dd5f5ec0c5ae026c463
Parvathy V.K., School of Business and Management, Christ University, Bangalore, India; Kumar J., School of Business and Management, Christ University, Bangalore, India