Pub Date : 2022-11-13DOI: 10.1080/23080477.2022.2074657
Bharat Singh, A. Kumar Sharma
ABSTRACT Voltage control and power loss minimization are some of the crucial issues in distribution system energy management. Finding the best strategy for Voltage control and power loss reduction is a critical task for the distribution network operator (DNO). The main contributions of the proposed work are (i) determination of size and location of the Distribution Static Synchronous Compensator (DSTATCOM) with (OLTC). (ii) to minimize the power loss and Voltage deviation with the Volt/var control strategy. (iii) To obtain the impact of single and multiple D-STATCOM units with and without OLTC. The proposed method is tested on two test systems: (i) IEEE-69 RDS and (ii) IEEE-25 bus three-phase unbalanced system. The benefits of the proposed results are addressed in the reduction of power loss, enhancement of the Voltage profile, and the annual cost of saving for the DNO. The results are tabulated, verified, and compared with other methods. The power loss is reduced to 39.25%, 38.04% for 69 bus and 25 bus test systems. The minimum Voltage profile is enhanced from 0.90918 pu to 0.9619 pu for 69 bus RDS and from 0.922559 pu to 0.9747 pu for 25 bus three-phase system.
{"title":"Impact of D-STATCOM and OLTC with Integrated Volt/var Control in Distribution System for Power Loss Minimization and Voltage Control","authors":"Bharat Singh, A. Kumar Sharma","doi":"10.1080/23080477.2022.2074657","DOIUrl":"https://doi.org/10.1080/23080477.2022.2074657","url":null,"abstract":"ABSTRACT Voltage control and power loss minimization are some of the crucial issues in distribution system energy management. Finding the best strategy for Voltage control and power loss reduction is a critical task for the distribution network operator (DNO). The main contributions of the proposed work are (i) determination of size and location of the Distribution Static Synchronous Compensator (DSTATCOM) with (OLTC). (ii) to minimize the power loss and Voltage deviation with the Volt/var control strategy. (iii) To obtain the impact of single and multiple D-STATCOM units with and without OLTC. The proposed method is tested on two test systems: (i) IEEE-69 RDS and (ii) IEEE-25 bus three-phase unbalanced system. The benefits of the proposed results are addressed in the reduction of power loss, enhancement of the Voltage profile, and the annual cost of saving for the DNO. The results are tabulated, verified, and compared with other methods. The power loss is reduced to 39.25%, 38.04% for 69 bus and 25 bus test systems. The minimum Voltage profile is enhanced from 0.90918 pu to 0.9619 pu for 69 bus RDS and from 0.922559 pu to 0.9747 pu for 25 bus three-phase system.","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"11 1","pages":"334 - 354"},"PeriodicalIF":2.3,"publicationDate":"2022-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46565245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-30DOI: 10.1080/23080477.2022.2117889
M. Kantipudi, Dr Rajanikanth Aluvalu, Suresh Velamuri
ABSTRACT The recent era of pervasive computing has evolved with various applications and has ground-breaking realities in mobile crowdsourcing (MCS). Multiple attempts have been devoted to integrating MCS with IoT-based smart cities where crowdsensing has played a crucial role in the recent past. Despite having potential features, MCS devices lack efficiency when security aspects are concerned. The current security approaches exercised in MCS operations imply limited features and are not intelligent enough to deal with different types of attacks in IoT smart cities. On the other hand, as MCS communications involve radio environmental mapping functional blocks from communication, it is an obvious situation that leads to a vulnerable situation of which adversarial modules can take advantage of it. There are different types of active and passive modes of attacks that can degrade the Quality-of-Service (QoS) aspects in IoT-driven smart city operations. This study’s prime aim and the appealing theme is to realize the need for resilient approaches to intelligent intrusion detection in MCS to mitigate different attacks. The study also introduces a theoretical approach of cluster-enabled multi-task (CeMT) based on bio-inspired learning modeling of the genetic approach to identify the maximum possible threats and misbehaving devices in the smart city-based MCS operations. The study also evaluated the model’s performance based on the processing time of identifying malicious events and showed the accuracy of detecting misbehaving working associate (WA) modules. GRAPHICAL ABSTRACT
{"title":"An Intelligent Approach of Intrusion Detection in Mobile Crowd Sourcing Systems in the Context of IoT Based SMART City","authors":"M. Kantipudi, Dr Rajanikanth Aluvalu, Suresh Velamuri","doi":"10.1080/23080477.2022.2117889","DOIUrl":"https://doi.org/10.1080/23080477.2022.2117889","url":null,"abstract":"ABSTRACT The recent era of pervasive computing has evolved with various applications and has ground-breaking realities in mobile crowdsourcing (MCS). Multiple attempts have been devoted to integrating MCS with IoT-based smart cities where crowdsensing has played a crucial role in the recent past. Despite having potential features, MCS devices lack efficiency when security aspects are concerned. The current security approaches exercised in MCS operations imply limited features and are not intelligent enough to deal with different types of attacks in IoT smart cities. On the other hand, as MCS communications involve radio environmental mapping functional blocks from communication, it is an obvious situation that leads to a vulnerable situation of which adversarial modules can take advantage of it. There are different types of active and passive modes of attacks that can degrade the Quality-of-Service (QoS) aspects in IoT-driven smart city operations. This study’s prime aim and the appealing theme is to realize the need for resilient approaches to intelligent intrusion detection in MCS to mitigate different attacks. The study also introduces a theoretical approach of cluster-enabled multi-task (CeMT) based on bio-inspired learning modeling of the genetic approach to identify the maximum possible threats and misbehaving devices in the smart city-based MCS operations. The study also evaluated the model’s performance based on the processing time of identifying malicious events and showed the accuracy of detecting misbehaving working associate (WA) modules. GRAPHICAL ABSTRACT","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"11 1","pages":"234 - 240"},"PeriodicalIF":2.3,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43429863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-28DOI: 10.1080/23080477.2022.2117016
B. Ayyanar, J. Suresh, V. Thangaraj, S. Karthikeyan, A. Arun, M. Kayalvizhi
ABSTRACT PVA, Chitosan, transition metal oxide nanocomposites, and a chlorinated chalcone moiety were used to create a 0.03 cm−1 thin polymer film. Prepared films were characterized using available techniques. The prepared film shows a semi-crystalline nature, proved by XRD analysis, and the nano-scale crystalline size (40–150 nm) was also observed. The surface of the film was smooth and a blooming flower resembling structure appeared in the SEM images obtained at 5 µm. The XPS and EDX spectra reveal the presence of added transition metals and other elements present in the prepared polymer thin film. The prepared film undergoes multistage decomposition upon heating, which was proved by TGA analysis. FT-IR analysis of the film shows that there was no chemical interaction between the added compound and the host polymer; instead, physical interactions alone persisted. Higher AC conductivity was observed with a value of 1.30 × 10−6 Scm−1 at room temperature for polymer composite film made up of MONC and DCHP. This conductance varies with temperature, and at higher temperatures, both dielectric loss and dielectric constant are high. It was discovered that the presence of chalcone moiety improves the AC conductance and dielectric properties of MONC doped polymer composite film. GRAPICAL ABSTRACT
{"title":"Effect of chalcone moiety on AC conductance of Metal Oxide Nano Composite doped thin polymer film","authors":"B. Ayyanar, J. Suresh, V. Thangaraj, S. Karthikeyan, A. Arun, M. Kayalvizhi","doi":"10.1080/23080477.2022.2117016","DOIUrl":"https://doi.org/10.1080/23080477.2022.2117016","url":null,"abstract":"ABSTRACT PVA, Chitosan, transition metal oxide nanocomposites, and a chlorinated chalcone moiety were used to create a 0.03 cm−1 thin polymer film. Prepared films were characterized using available techniques. The prepared film shows a semi-crystalline nature, proved by XRD analysis, and the nano-scale crystalline size (40–150 nm) was also observed. The surface of the film was smooth and a blooming flower resembling structure appeared in the SEM images obtained at 5 µm. The XPS and EDX spectra reveal the presence of added transition metals and other elements present in the prepared polymer thin film. The prepared film undergoes multistage decomposition upon heating, which was proved by TGA analysis. FT-IR analysis of the film shows that there was no chemical interaction between the added compound and the host polymer; instead, physical interactions alone persisted. Higher AC conductivity was observed with a value of 1.30 × 10−6 Scm−1 at room temperature for polymer composite film made up of MONC and DCHP. This conductance varies with temperature, and at higher temperatures, both dielectric loss and dielectric constant are high. It was discovered that the presence of chalcone moiety improves the AC conductance and dielectric properties of MONC doped polymer composite film. GRAPICAL ABSTRACT","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"11 1","pages":"371 - 379"},"PeriodicalIF":2.3,"publicationDate":"2022-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48267215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-22DOI: 10.1080/23080477.2022.2092671
Vyacheslav R. Shulunov
ABSTRACT It is shown how to prevent and monitor the spread of any respiratory viral outbreaks by precisely and quickly identifying patients and asymptomatic carriers by nano technology. Rapid Parallel Search (RPS) derived from a combination of time-proved methods, hardware and software components such as Scanning Electron Microscopy (SEM), Artificial Neural Network (ANN) and a recognition system similar to ‘Face ID’ from ‘Apple Inc.’. High performance and classification precision (~50 s per test with 99.999% accuracy) for detecting the presence of all known viruses and microorganisms, that are hard or impossible to identify with molecular methods, are achieved through simultaneous automatic testing of hundreds of samples with scanning resolution of 0.5 nm. RPS has sufficient potential for real-time monitoring of all passengers of huge transcontinental airports and daily, precisely supervising of the vast majority of residents of a city with a population of one million or more without reagents. Graphical abstract
{"title":"Rapid Parallel Search Technology with Scanning Electron Microscope and Artificial Neural Network","authors":"Vyacheslav R. Shulunov","doi":"10.1080/23080477.2022.2092671","DOIUrl":"https://doi.org/10.1080/23080477.2022.2092671","url":null,"abstract":"ABSTRACT It is shown how to prevent and monitor the spread of any respiratory viral outbreaks by precisely and quickly identifying patients and asymptomatic carriers by nano technology. Rapid Parallel Search (RPS) derived from a combination of time-proved methods, hardware and software components such as Scanning Electron Microscopy (SEM), Artificial Neural Network (ANN) and a recognition system similar to ‘Face ID’ from ‘Apple Inc.’. High performance and classification precision (~50 s per test with 99.999% accuracy) for detecting the presence of all known viruses and microorganisms, that are hard or impossible to identify with molecular methods, are achieved through simultaneous automatic testing of hundreds of samples with scanning resolution of 0.5 nm. RPS has sufficient potential for real-time monitoring of all passengers of huge transcontinental airports and daily, precisely supervising of the vast majority of residents of a city with a population of one million or more without reagents. Graphical abstract","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"11 1","pages":"364 - 370"},"PeriodicalIF":2.3,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45465794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-21DOI: 10.1080/23080477.2022.2092670
Tanuj Mishra, A. Singh, Vikram Kumar Kamboj
ABSTRACT Power system network is growing day by day as per the increased demand due to technological development around the globe. The increased power demand needs optimized planning for all the sections of power system. Economic dispatch is one of the important areas in which new optimization techniques can add to the overall improvement in the power system planning. Recent technological improvement in microgrids results in economic and efficient operation considering both conventional and non-conventional methods of generation. This paper highlights the optimal scheduling requirement in the advanced power system control by introducing a new proposed metaheuristic hybrid approach, i.e., Chaotic Spotted Hyena Optimization (CSHO). The proposed approach improves and intensifies the conventional approach and the results obtained are compared with some well-known published approaches using standard data. The CSHO is implemented on an islanded microgrid having five distributed generators out of which three are conventional generators and two are renewable sources. Three objectives are tested on the microgrid-(1) Economic scheduling, (2) Environmental emission and (3) CEED for Microgrid and the results of proposed approach are tested in four scenarios and compared with the PSO, DE, SOS, GWO and WOA approaches. The result achieved from the proposed approach is remarkable over previous approaches and showing enhanced economic operation, which are verified and presented in different sections of paper.
{"title":"A cost-effective solution to security constrained dispatch problem of Islanded microgrid using chaotic spotted Hyena optimization","authors":"Tanuj Mishra, A. Singh, Vikram Kumar Kamboj","doi":"10.1080/23080477.2022.2092670","DOIUrl":"https://doi.org/10.1080/23080477.2022.2092670","url":null,"abstract":"ABSTRACT Power system network is growing day by day as per the increased demand due to technological development around the globe. The increased power demand needs optimized planning for all the sections of power system. Economic dispatch is one of the important areas in which new optimization techniques can add to the overall improvement in the power system planning. Recent technological improvement in microgrids results in economic and efficient operation considering both conventional and non-conventional methods of generation. This paper highlights the optimal scheduling requirement in the advanced power system control by introducing a new proposed metaheuristic hybrid approach, i.e., Chaotic Spotted Hyena Optimization (CSHO). The proposed approach improves and intensifies the conventional approach and the results obtained are compared with some well-known published approaches using standard data. The CSHO is implemented on an islanded microgrid having five distributed generators out of which three are conventional generators and two are renewable sources. Three objectives are tested on the microgrid-(1) Economic scheduling, (2) Environmental emission and (3) CEED for Microgrid and the results of proposed approach are tested in four scenarios and compared with the PSO, DE, SOS, GWO and WOA approaches. The result achieved from the proposed approach is remarkable over previous approaches and showing enhanced economic operation, which are verified and presented in different sections of paper.","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"11 1","pages":"215 - 225"},"PeriodicalIF":2.3,"publicationDate":"2022-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43577240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-21DOI: 10.1080/23080477.2022.2092672
Chung-Hsiang Cheng, Wei-Min Wang, Kuangyuh Huang
ABSTRACT In this study, a novel measuring instrument named defocus atomic force microscope (DeF-AFM) is presented. A Gaussian beam intensity measuring method is proposed for this optical pickup unit (OPU)-based AFM. Only partial components inside the OPU such as the laser diode, the objective, and the photodiode IC (PDIC) are required for this method. The displacement of the cantilever can be acquired by analyzing the exponential intensity change, which is along the optic axis of the laser, reflected to the PDIC. A support controller for the DeF-AFM is also designed and developed. The dynamic measuring ranges of this AFM in X, Y, and Z-axis are designed to be 12,000 nm, 12,000 nm, and 1400 nm, respectively. The horizontal and the vertical resolution are approximately 3.3 nm and 0.34 nm, respectively. The spatial resolution of the DeF-AFM is also verified by resolving the single atomic layer of the highly ordered pyrolytic graphite (HOPG).
{"title":"Development of Defocus Atomic Force Microscope (DeF-AFM)","authors":"Chung-Hsiang Cheng, Wei-Min Wang, Kuangyuh Huang","doi":"10.1080/23080477.2022.2092672","DOIUrl":"https://doi.org/10.1080/23080477.2022.2092672","url":null,"abstract":"ABSTRACT In this study, a novel measuring instrument named defocus atomic force microscope (DeF-AFM) is presented. A Gaussian beam intensity measuring method is proposed for this optical pickup unit (OPU)-based AFM. Only partial components inside the OPU such as the laser diode, the objective, and the photodiode IC (PDIC) are required for this method. The displacement of the cantilever can be acquired by analyzing the exponential intensity change, which is along the optic axis of the laser, reflected to the PDIC. A support controller for the DeF-AFM is also designed and developed. The dynamic measuring ranges of this AFM in X, Y, and Z-axis are designed to be 12,000 nm, 12,000 nm, and 1400 nm, respectively. The horizontal and the vertical resolution are approximately 3.3 nm and 0.34 nm, respectively. The spatial resolution of the DeF-AFM is also verified by resolving the single atomic layer of the highly ordered pyrolytic graphite (HOPG).","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"11 1","pages":"226 - 233"},"PeriodicalIF":2.3,"publicationDate":"2022-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47114270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-28DOI: 10.1080/23080477.2022.2074658
Bharat Singh, A. Sharma
ABSTRACT The intermittent nature of renewable-based generation may cause the dip or rise generation and load imbalances. Besides, the higher penetration of Electric Vehicles can affect the voltage profile and imbalances. The main contribution of the proposed work is to determine (i) the realistic load model of electric vehicle (EV) charging station (ii) the size of battery energy storage (BES) considering the EV load demand with the most realistic ZIP load. (iii) the cost-benefit analysis and the probabilistic modeling of EV load demand are considered for BES sizing. (iv) minimization of the daily energy loss (v), maximizing the total benefit of the system, (vi) the nature of the electric vehicle load demand has been modeled for size determination of energy storage devices. The fuel cost of the thermal generator has been minimized, and the operating and maintenance cost of the Solar Photovoltaic (PV), and Wind Turbine (WT) have been considered in the objective function. The daily energy loss has been reduced to 30.085%. The voltage deviation has been reduced to 1.165%. The analysis has been carried out for the IEEE-33 bus test system. The iterative Monte Carlo Simulation and Nonlinear Programming have been used to solve the multi-objective problem.
{"title":"Impact of Electric Vehicle Load Demand and Energy Storage Device in Integrated Renewable Energy Sources","authors":"Bharat Singh, A. Sharma","doi":"10.1080/23080477.2022.2074658","DOIUrl":"https://doi.org/10.1080/23080477.2022.2074658","url":null,"abstract":"ABSTRACT The intermittent nature of renewable-based generation may cause the dip or rise generation and load imbalances. Besides, the higher penetration of Electric Vehicles can affect the voltage profile and imbalances. The main contribution of the proposed work is to determine (i) the realistic load model of electric vehicle (EV) charging station (ii) the size of battery energy storage (BES) considering the EV load demand with the most realistic ZIP load. (iii) the cost-benefit analysis and the probabilistic modeling of EV load demand are considered for BES sizing. (iv) minimization of the daily energy loss (v), maximizing the total benefit of the system, (vi) the nature of the electric vehicle load demand has been modeled for size determination of energy storage devices. The fuel cost of the thermal generator has been minimized, and the operating and maintenance cost of the Solar Photovoltaic (PV), and Wind Turbine (WT) have been considered in the objective function. The daily energy loss has been reduced to 30.085%. The voltage deviation has been reduced to 1.165%. The analysis has been carried out for the IEEE-33 bus test system. The iterative Monte Carlo Simulation and Nonlinear Programming have been used to solve the multi-objective problem.","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"11 1","pages":"251 - 275"},"PeriodicalIF":2.3,"publicationDate":"2022-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41453835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-22DOI: 10.1080/23080477.2022.2074659
Zahid Afzal Thoker, S. A. Lone
ABSTRACT In this paper, an adaptive RBF neural network-based sliding mode controller is developed for superconducting magnetic energy storage (SMES) installed in a wind–diesel power system. Due to sudden load and wind power variations in a wind–diesel power system, power imbalances may force the system frequency to deviate from its nominal value and drive the system to operate in an unstable mode. Therefore, in a wind–diesel power system using a converter interface, a fast-acting and high power density SMES device is interconnected to carry the required power exchange whenever power imbalances occur. Based on switching manifold design, a sliding mode controller is developed to control the charging and discharging operations of SMES coil as per the power requirements, and the same is achieved by controlling the converter. A neural network using a radial basis function (RBF) is developed to estimate the unknown function of the system. Lyapunov stability analysis is conducted to guarantee the asymptotic stability of the system. MATLAB simulations are carried out and are presented to show the improved performance with the system exposed to disturbances in load and wind power. Graphical abstract
{"title":"Adaptive Neuro Sliding Mode Control of Superconducting Magnetic Energy Storage System","authors":"Zahid Afzal Thoker, S. A. Lone","doi":"10.1080/23080477.2022.2074659","DOIUrl":"https://doi.org/10.1080/23080477.2022.2074659","url":null,"abstract":"ABSTRACT In this paper, an adaptive RBF neural network-based sliding mode controller is developed for superconducting magnetic energy storage (SMES) installed in a wind–diesel power system. Due to sudden load and wind power variations in a wind–diesel power system, power imbalances may force the system frequency to deviate from its nominal value and drive the system to operate in an unstable mode. Therefore, in a wind–diesel power system using a converter interface, a fast-acting and high power density SMES device is interconnected to carry the required power exchange whenever power imbalances occur. Based on switching manifold design, a sliding mode controller is developed to control the charging and discharging operations of SMES coil as per the power requirements, and the same is achieved by controlling the converter. A neural network using a radial basis function (RBF) is developed to estimate the unknown function of the system. Lyapunov stability analysis is conducted to guarantee the asymptotic stability of the system. MATLAB simulations are carried out and are presented to show the improved performance with the system exposed to disturbances in load and wind power. Graphical abstract","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"11 1","pages":"355 - 363"},"PeriodicalIF":2.3,"publicationDate":"2022-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41760764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-18DOI: 10.1080/23080477.2022.2074660
A. Karthikeyan, J. Suresh, K. Balaji, S. Anandhakumar, A. Arun
ABSTRACT In the present investigation, novel triazine-based chalcone ligand (1-(2,4-dihydroxyphenyl)-3-(4-((4-((4-nitrophenyl)amino)-6-phenoxy-1,3,5-triazin-2-yl)oxy)phenyl) prop-2-en-1-one) (DNPP) is synthesized and used in metal complexes synthesis which contains iron, copper, nickel, and zinc. 1H NMR and IR spectrum of DNPP confirms the formation of the product. UV-Visible spectrum shows a peak around 400–500 nm for d-d transition. SEM with EDX shows the metal complexes is in crystalline state with the size in the range of 20–50 nm. TGA analysis shows the synthesized compound is highly stable and the residue content confirms the presence of metal in the molecular structure. Antioxidant were found out to be <50 μg/ml. Graphical Abstract
{"title":"Synthesis, characterization and antioxidant property of nano-scaled metal complexes of triazine based hydroxy chalcone","authors":"A. Karthikeyan, J. Suresh, K. Balaji, S. Anandhakumar, A. Arun","doi":"10.1080/23080477.2022.2074660","DOIUrl":"https://doi.org/10.1080/23080477.2022.2074660","url":null,"abstract":"ABSTRACT In the present investigation, novel triazine-based chalcone ligand (1-(2,4-dihydroxyphenyl)-3-(4-((4-((4-nitrophenyl)amino)-6-phenoxy-1,3,5-triazin-2-yl)oxy)phenyl) prop-2-en-1-one) (DNPP) is synthesized and used in metal complexes synthesis which contains iron, copper, nickel, and zinc. 1H NMR and IR spectrum of DNPP confirms the formation of the product. UV-Visible spectrum shows a peak around 400–500 nm for d-d transition. SEM with EDX shows the metal complexes is in crystalline state with the size in the range of 20–50 nm. TGA analysis shows the synthesized compound is highly stable and the residue content confirms the presence of metal in the molecular structure. Antioxidant were found out to be <50 μg/ml. Graphical Abstract","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"11 1","pages":"192 - 203"},"PeriodicalIF":2.3,"publicationDate":"2022-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46762919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-17DOI: 10.1080/23080477.2022.2074655
M. Chaudhari, A. Chowdhury
ABSTRACT The single-phase induction motors (SPIMs) are predominantly used in the wider range of application developments. However, these motors have comparatively lower efficiency. Motors such as permanent magnet synchronous motor (PMSM), synchronous reluctance motor (SynRM), or switched reluctance motor are energy efficient. Although these motors posses high efficiency, the application cost becomes a significant concern. To cause the compatible performance of economical and conventional SPIM in terms of efficiency, lower temperature rise, weight reduction, and increased speed, this work addresses the conversion of SPIM into line-start SynRM (LS-SynRM). The required necessary modifications are analyzed using FEM. The design methodology is suggested for a typical 0.5HP SPIM that is tested in terms of rotor constructive parameters. The parametric sensitivity analysis is carried out using Ansys Maxwell FEM software. The rotor parameters such as cutout dimensions, type of barrier, their positions and widths, bridge thickness, pole arc to pole pitch ratios, and the end ring configurations are considered for the analysis. It has been determined that the efficiency is largely affected by the barrier positions and its width, and an improvement of two percent has been noted. However, the efficiency of LS-SynRM is also a function of bridge thickness, with higher values inferior is the efficiency. GRAPHICAL ABSTRACT
{"title":"Design and Performance Analysis of Single Phase Line Start Synchronous Reluctance Motor Derived from Single Phase Induction Motor","authors":"M. Chaudhari, A. Chowdhury","doi":"10.1080/23080477.2022.2074655","DOIUrl":"https://doi.org/10.1080/23080477.2022.2074655","url":null,"abstract":"ABSTRACT The single-phase induction motors (SPIMs) are predominantly used in the wider range of application developments. However, these motors have comparatively lower efficiency. Motors such as permanent magnet synchronous motor (PMSM), synchronous reluctance motor (SynRM), or switched reluctance motor are energy efficient. Although these motors posses high efficiency, the application cost becomes a significant concern. To cause the compatible performance of economical and conventional SPIM in terms of efficiency, lower temperature rise, weight reduction, and increased speed, this work addresses the conversion of SPIM into line-start SynRM (LS-SynRM). The required necessary modifications are analyzed using FEM. The design methodology is suggested for a typical 0.5HP SPIM that is tested in terms of rotor constructive parameters. The parametric sensitivity analysis is carried out using Ansys Maxwell FEM software. The rotor parameters such as cutout dimensions, type of barrier, their positions and widths, bridge thickness, pole arc to pole pitch ratios, and the end ring configurations are considered for the analysis. It has been determined that the efficiency is largely affected by the barrier positions and its width, and an improvement of two percent has been noted. However, the efficiency of LS-SynRM is also a function of bridge thickness, with higher values inferior is the efficiency. GRAPHICAL ABSTRACT","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"11 1","pages":"318 - 333"},"PeriodicalIF":2.3,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42855837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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