Browsing by Author "Priyanka Devi"

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Design and Characteristic Investigation of Novel Dual-Stator V-Shaped Magnetic Pole Six-Phase Permanent Magnet Synchronous Generator for Wind Power Application
(Bellwether Publishing, Ltd., 2020) Raja Ram Kumar; Chandan Chetri; Priyanka Devi; Ram Khelawan Saket; Frede Blaabjerg; Padmanaban Sanjeevikumar; Jens Bo Holm-Nielsen
This paper describes the characteristic investigation of the Novel Dual-stator V-Shape Magnetic Pole Six-Phase Permanent Magnet Synchronous Generator (NDSVSMPSP-PMSG) for wind power application. The proposed generator has V-shaped embedded magnetic pole in the rotor and six-phase winding in both the stator. The proposed generator has high-power density and high efficiency. For emphasizing the significance of the proposed generator, the characteristics of the NDSVSMPSP generator are analyzed and compared to one of the traditional generators, i.e., the Dual-stator Surface Mounted Six-Phase Permanent Magnet Synchronous Generator (DSSMSP-PMSG). For the design and characteristic investigation of both the generator, Finite Element Method (FEM) is chosen because of its high accuracy. Two modes of FEM analysis are considered, namely magneto-statics and transients. The magneto static analysis is used for the study of flux line and flux density distribution, while the transient analysis is considered for the generator’s characteristic investigation. The performance characteristics such as generated Electromotive Force (EMF) for both inner and outer stator, Percentage Total Harmonic Distortion (THD) of developed voltage, Developed EMF vs rpm, terminal voltage vs. current, developed rotor torque vs time, percent (%) ripple content in torque, and percent efficiency vs current for both generators are investigated. As a result, it can be stated that the power density and reliability of the proposed generator is higher than that of the traditional generator. © Copyright © 2020 Taylor & Francis Group, LLC.
Design and characteristics investigation of novel dual stator pseudo-pole five-phase permanent magnet synchronous generator for wind power application
(Institute of Electrical and Electronics Engineers Inc., 2020) Raja Ram Kumar; Priyanka Devi; Chandan Chetri; Aanchal Singh S. Vardhan; Rajvikram Madurai Elavarasan; Lucian Mihet-Popa; R.K. Saket
The main focus of this paper is to design and assess the characteristics investigation of Novel Dual Stator Pseudo-Pole Five Phase Permanent Magnet Synchronous Generator (NDSPPFP-PMSG) for wind power application. The proposed generator has a dual stator and two sets of five phase windings which enhance its power density and fault tolerant capability. The novelty of this generator is based on the fact that, eight magnetic poles are formed using only four poles of actual magnets on both the surfaces of the rotor. For the designing and optimal electromagnetic performance of the proposed generator, a Dynamic Magnetic Circuit Model (DMCM) is reported. To validate the results obtained from DMCM, Finite Element Method (FEM) has been opted owing to its high accuracy. For showing the performance superiority, the proposed generator is compared with two conventional generators namely, Dual Stator Embedded-Pole Five Phase (DSEPFP) and Single Stator Single Rotor Five Phase (SSSRFP) PMSG. To compare their performances, FEM results are considered. The electromagnetic performance namely, generated Electromotive Force(EMF), percentage(%) Total Harmonic Distortion(THD) of generated EMF, generated EMF vs speed, terminal voltage vs load current, electromagnetic torque developed on rotor vs time, %ripple content in the torque, and %efficiency vs load current are investigated for all the three generators. From these investigations, it is found that the power density (power to weight ratio) of the proposed generator is maximum. © 2020 Institute of Electrical and Electronics Engineers Inc.. All rights reserved.
Efficient removal of total arsenic (As3+/5+) from contaminated water by novel strategies mediated iron and plant extract activated waste flowers of marigold
(Elsevier Ltd, 2023) Sudhir K. Upadhyay; Priyanka Devi; Vinay Kumar; Himanshu K. Pathak; Prasann Kumar; Vishnu D. Rajput; Padmanabh Dwivedi
In this investigation, marigold flower-waste was activated with iron salts (MG-Fe), subsequently marigold plant extract (MG-Fe-Ex) for the adsorptive elimination of As3+ and As5+ from contaminated water. The governing factor such as medium pH, temperature, pollutant concentration, reaction time, adsorbent dose were considered for the study. The complete elimination of As3+/5+ was recorded with MG-Fe-Ex at pH 8.0, 90 min, 30 °C, dose 4 g/L, 20 mg/L of As3+/5+ and shaking rate 120 rpm, while under the identical experimental condition, MG-Fe exhibited 98.4% and 73.3% removal for As5+ and As3+, respectively. The MG-Fe-Ex contains iron oxides (Fe2O3 and Fe3O4) as a result of iron ions reaction with plant bioactive molecules as evident from x-ray diffraction analysis (XRD), energy dispersive x-ray spectroscopic (EDS) and Fourier transform infrared (FTIR) spectroscopic study. The adsorption data of As3+/5+ on MG-Fe and MG-Fe-Ex was best fitted by pseudo-first order kinetic and freundlich isotherm except As5+ adsorption on MG-Fe-Ex that can be described by langmuir isotherm model. The prevailing mechanism in adsorption of As3+/5+ on both adsorbent might be hydrogen bonding, electrostatic attraction and complexation. From the above, it is confirmed that MG-Fe-Ex adsorbent has high potential and can be used for the adsorptive elimination of As3+/5+ from contaminated water in sustainable and environmentally friendly way. © 2022
Hazardous Phytotoxic Nature of Reactive Oxygen Species in Agriculture
(Springer Nature, 2023) Khushbu Sharma; Priyanka Devi; Prasann Kumar; Abhijit Dey; Padmanabh Dwivedi
During the course of normal metabolic activities in plants such as photosynthesis, respiration, and cellular metabolism, several reactive oxygen species are produced (hydroxyl peroxide and superoxide anion). The presence of these reactive oxygen species can cause plants to suffer from oxidative stress, meaning they suffer from an unhealthful environment. Because of the accumulation of lipids in the cell membrane, increased amounts of ROS are produced endogenously within the cell. This adversely affects the production of soluble proteins and sugars, as well as reduces the absorption of elements throughout the cell membrane. During stress, the whole production process of ROS is regulated by a signal protein that acts as a signal. These oxidative stresses are very common in agriculture crops because of some natural and anthropogenic factors such as the accumulation of heavy metal ions in the rhizosphere. From the rhizosphere, these ions get transported all over the plant and cause damage to the normal metabolic functioning of the plant under stress. In this instance, there are not enough energy molecules available for the plant to continue photosynthesis, which further results in inadequate yields. The plant experiences some physiological changes as a result of oxidative stress in order to scavenge the effects of oxidative stress. There are several issues we address in this chapter, including the mechanisms by which reactive oxygen species are introduced into crops, generation of free radicals, mitochondrial oxidative stress, signaling, and the phytotoxic nature of these in agriculture crops. The chapter also deals with the scavenging mechanisms that plants have evolved to protect themselves from reactive oxygen species damage at the enzymatic and molecular levels. © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.
Heavy Metals: Transport in Plants and Their Physiological and Toxicological Effects
(Springer Nature, 2022) Prasann Kumar; E. Lokesh Goud; Priyanka Devi; Shipa Rani Dey; Padmanabh Dwivedi
Heavy metal pollution in the environment is becoming a serious problem and a major concern as it is causes negative effects all over the world. These inorganic pollutants are being discarded in soils, water and the atmosphere as a result of rapidly growing agriculture and metal industries, improper waste disposal, pesticides and fertilisers. This chapter explains how these pollutants enter our environment and cause serious diseases such as cancer by interfering with biological functions and accumulating in various organs. This chapter also describes the toxicological and pharmacokinetic properties of metals and their translocation in the plant, some biochemical properties and physiological effects of such metals in humans as well as in plants. © The Editor(s)(if applicable) and The Author(s),under exclusive license to Springer Nature Singapore Pte Ltd. 2022.
Performance analysis of dual stator six-phase embedded-pole permanent magnet synchronous motor for electric vehicle application
(John Wiley and Sons Inc, 2023) Raja Ram Kumar; Priyanka Devi; Chandan Chetri; Ankita Kumari; Papu Moni Saikia; Ram Khelawan Saket; Kundan Kumar; Baseem Khan
The motive of this study is to analyse the characteristics of a novel dual-stator embedded-pole six-phase permanent magnet synchronous motor for the application of electric vehicles. A comparative analysis of two separate motor topologies, namely, dual stator embedded-pole six-phase permanent magnet synchronous motor and single stator single rotor surface-mounted permanent magnet synchronous motor, is accomplished to illustrate the performance superiority of the proposed motor. Furthermore, for optimal designing of the proposed motor, a design methodology has also been presented. For the above application, the motor should retain high torque density (HTD) and high reliability. In this regard, a novel H-Shaped flux barrier is introduced in the rotor portion, which fulfils the requirement of HTD. Moreover, the availability of two sets of the stator winding enhances the performance efficiency and ensures the proposed motor's more significant fault-tolerating ability of the motor. For performance evaluation, the Finite Element Method analysis is chosen, as it gives appropriate and precise results. From the above analysis, it is concluded that the HTD and the proposed motor's dynamic performance are better than the above-mentioned conventional motor. © 2022 The Authors. IET Electrical Systems in Transportation published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology.
Toward Sustainable Agriculture: Strategies Involving Phytoprotectants Against Reactive Oxygen Species
(Springer Nature, 2023) Priyanka Devi; Shipa Rani Dey; Lalit Saini; Prasann Kumar; Sonam Panigrahi; Padmanabh Dwivedi
A primary goal of this book chapter is to summarize knowledge on the effects of phytoprotectants of microbial origin (e.g., root growth-promoting rhizobacteria, root growth-promoting mycorrhiza fungi), phytohormones, osmoprotectants, antioxidants, as well as the metabolic compounds like melatonin which are related to reactive oxygen species. It is well-known that increasing environmental stresses have a detrimental effect on a plant’s health as well as its productivity. The Food and Agriculture Organization (FAO) has in a recent report outlined the important task of devising strategies to deal with the impact of climate change. Increasing environmental stress and altered weather patterns can be considered as evidence of the effects of climate change on crop production. Among these serious issues are soil salinity, flooding, droughts, pollution, metal and metalloid toxicity, and extreme temperature changes. This is due to the fact that stress factors are more commonly present in plants because of the variability of these conditions combined with plant immobility. It is crucial to increase the adaptability of crop plants to these stresses in order to meet the increased food needs of the population. There are a number of mechanisms that can be used to improve plant tolerance to stress using exogenous phytoprotectants as a means of reducing these stresses. In order to enhance the resistance of plants to these stresses, a wide range of phytoprotectants have been proved to be highly effective. It is the purpose of this chapter to discuss in detail a number of phytoprotectants including osmoprotectants, phytohormones, antioxidants, and nitric oxide. © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.