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This paper presents the design and analytical modeling of the proposed solar photovoltaic standalone system under varying environmental conditions. The proposed system consists of a unique structure of a solar PV-tree, maximum power point tracking (MPPT) technique, and DC–DC converter. The output voltage acquired from the solar PV tree is low. A DC–DC boost converter is utilized to step-up the required amount of voltage level. In this paper, the appropriate duty cycle is obtained for extracting the optimum power from the solar PV tree by using various MPPT mechanisms such as perturb and observe (P&O), incremental conductance (INC), and a radial basis function network (RBFN)-based neural network (NN). The proposed solar photovoltaic tree-based energy harvesting system is designed and validated by using MATLAB/SIMULINK software and real-time application. The simulation results of the above-mentioned three techniques are compared with each other in order to show the effectiveness of the proposed system with RBFN. The RBFN-MPPT provides a significant improvement in tracking efficiency of 6.0% and 5.72% as compared with the P&O method and the INC method at 1000 W/m2 irradiance condition. From the simulation and real-time results, it is concluded that the RBFN-based NN provides better tracking efficiency and less oscillation as compared with the other two algorithms.
Pitchai Pandiyan; Subramani Saravanan; Natarajan Prabaharan; Ramji Tiwari; Thangam Chinnadurai; Neelakandan Babu; Eklas Hossain. Implementation of Different MPPT Techniques in Solar PV Tree under Partial Shading Conditions. Sustainability 2021, 13, 7208 .
AMA StylePitchai Pandiyan, Subramani Saravanan, Natarajan Prabaharan, Ramji Tiwari, Thangam Chinnadurai, Neelakandan Babu, Eklas Hossain. Implementation of Different MPPT Techniques in Solar PV Tree under Partial Shading Conditions. Sustainability. 2021; 13 (13):7208.
Chicago/Turabian StylePitchai Pandiyan; Subramani Saravanan; Natarajan Prabaharan; Ramji Tiwari; Thangam Chinnadurai; Neelakandan Babu; Eklas Hossain. 2021. "Implementation of Different MPPT Techniques in Solar PV Tree under Partial Shading Conditions." Sustainability 13, no. 13: 7208.
In this article, an efficient long-term novel scheduling technique is proposed for allocating capacitors in a combined system involving distributed generation (DG) along with radial distribution systems (RDS). We introduce a unique multi-objective function that focuses on the reduction of power loss with the maximization of voltage stability index (VSI) subjected to constraints of equality and inequality systems. Loss sensitivity factor and VSI together are involved in pre-identifying the locations of capacitors and DG. Determination of the optimal size of capacitor and DG is performed by utilizing the Bat algorithm (BA) for all the loads in RDS. The conventional approach considers the medium load of (1.0) condition generally, but the proposed method changes the feeder loads linearly, ranging from light load (0.5) to peak load (1.6) with the value of step size as 1%. BA determines the optimal size of the capacitor and DG for each step load. The curve fitting technique is used for deducing the generalized equation of capacitor size and DG for all conditions of the load with the various loading condition sized by distributed network operators (DNOs). Further, various load models such as industrial, residential, and commercial loads have been considered to show the efficiency of the present approach. Validation of results is performed in different scenarios on a 69-bus test system and on a standard IEEE 33-bus system. The results exhibit improved accuracy with less power loss value, superior bus voltage, and stability of system voltage with a higher rate of convergence.
Thangaraj Yuvaraj; Kaliaperumal Devabalaji; Natarajan Prabaharan; Hassan Haes Alhelou; AsokKumar Manju; Poushali Pal; Pierluigi Siano. Optimal Integration of Capacitor and Distributed Generation in Distribution System Considering Load Variation Using Bat Optimization Algorithm. Energies 2021, 14, 3548 .
AMA StyleThangaraj Yuvaraj, Kaliaperumal Devabalaji, Natarajan Prabaharan, Hassan Haes Alhelou, AsokKumar Manju, Poushali Pal, Pierluigi Siano. Optimal Integration of Capacitor and Distributed Generation in Distribution System Considering Load Variation Using Bat Optimization Algorithm. Energies. 2021; 14 (12):3548.
Chicago/Turabian StyleThangaraj Yuvaraj; Kaliaperumal Devabalaji; Natarajan Prabaharan; Hassan Haes Alhelou; AsokKumar Manju; Poushali Pal; Pierluigi Siano. 2021. "Optimal Integration of Capacitor and Distributed Generation in Distribution System Considering Load Variation Using Bat Optimization Algorithm." Energies 14, no. 12: 3548.
Welding process is found to be a predominant procedure in most of the processing industries, especially in the automobile sector for maintenance operation and fabrication. Ultrasonic Polymer Welding (USW) is used for the joining process because of its flexibility and short needed welding time. In this article, two different polymer materials PC and ABS are blended in the ratio of 60:40 and molded into a sheet. Furthermore, molded PC/ABS sheets are joined using USW with different processing parameter settings. Three major influencing process parameters like pressure (P), amplitude (A) and weld time (Tw) are considered and other processing parameters are kept at constant. The experiment is carried out for 26 welded samples and from the obtained results it is noticed that the above-mentioned process parameters directly influence the tensile strength of welded joints. Additionally, the ultrasonically welded samples tensile strength is analyzed with the help of Artificial Neural Network technique (ANN) and Adaptive Neuro-Fuzzy Inference System method (ANFIS). From the simulation results, an optimized ANFIS model provides the superior result as compared to ANN. Moreover, Scanning Electron Microscope analysis is carried out to visualize the weld interface between the joint. Also, Finite Element Modeling (ANSYS) is performed to understand the heat dissipation during the welding process.
T. Chinnadurai; Natarajan Prabaharan; S. Saravanan; M. Karthigai Pandean; P. Pandiyan; Hassan Haes Alhelou. Prediction of Process Parameters of Ultrasonically Welded PC/ABS Material Using Soft-Computing Techniques. IEEE Access 2021, 9, 33849 -33859.
AMA StyleT. Chinnadurai, Natarajan Prabaharan, S. Saravanan, M. Karthigai Pandean, P. Pandiyan, Hassan Haes Alhelou. Prediction of Process Parameters of Ultrasonically Welded PC/ABS Material Using Soft-Computing Techniques. IEEE Access. 2021; 9 ():33849-33859.
Chicago/Turabian StyleT. Chinnadurai; Natarajan Prabaharan; S. Saravanan; M. Karthigai Pandean; P. Pandiyan; Hassan Haes Alhelou. 2021. "Prediction of Process Parameters of Ultrasonically Welded PC/ABS Material Using Soft-Computing Techniques." IEEE Access 9, no. : 33849-33859.
Increase in utilization of electric vehicles and penetration of Renewable Energy Sources (RES) creates a greater impact on traditional power systems. Intermittent output from renewable energy resources and uneven usage pattern of electric vehicles creates a greater impact on the economic operation of power system. In this paper, a stochastic Dynamic Economic Dispatch (DED) problem incorporating Commercial Electric Vehicles (CEVs) and intermittent renewable energy resources is addressed. The charging pattern of CEVs as well as intermittency of solar and wind resources creates a significant impact on power system peak demand. The behaviour of these CEVs and RES in various seasons is considered and the same is tested on a real time south Indian practical test system. An attempt is made to improve the swarm-based Moth Flame Optimization (MFO), named as IMFO is developed and utilized for solving the considered problem. The efficacy of the said method is tested and necessary validations are carried out in this article.
Velamuri Suresh; S. Sreejith; Suresh Kumar Sudabattula; S. Hari Charan Cherukuri; Natarajan Prabaharan; Pierluigi Siano; Hassan Haes Alhelou. Stochastic Economic Dispatch Incorporating Commercial Electric Vehicles and Fluctuating Energy Sources. IEEE Access 2020, 8, 216332 -216348.
AMA StyleVelamuri Suresh, S. Sreejith, Suresh Kumar Sudabattula, S. Hari Charan Cherukuri, Natarajan Prabaharan, Pierluigi Siano, Hassan Haes Alhelou. Stochastic Economic Dispatch Incorporating Commercial Electric Vehicles and Fluctuating Energy Sources. IEEE Access. 2020; 8 (99):216332-216348.
Chicago/Turabian StyleVelamuri Suresh; S. Sreejith; Suresh Kumar Sudabattula; S. Hari Charan Cherukuri; Natarajan Prabaharan; Pierluigi Siano; Hassan Haes Alhelou. 2020. "Stochastic Economic Dispatch Incorporating Commercial Electric Vehicles and Fluctuating Energy Sources." IEEE Access 8, no. 99: 216332-216348.
The Frequency Response Analysis approach (FRA) is useful in the fault diagnosis of transformers. However, its usefulness in diagnosing any potential sources of Partial Discharge (PD) in transformers has not been thoroughly investigated so far. In this work, the use of Impulse voltage-based FRA (IFRA) in diagnosing inter-turn shorts and potential sources of PD were investigated on a 315 kVA, 11 kV/433 V transformer. Inter-turn shorts and PD sources were emulated and the usefulness of IFRA in their diagnosis was investigated while using switching impulse voltage at different magnitude levels as the test signals. For emulating the inter-turn shorts and the PDs, special tappings were provided on one of the 11 kV windings through the low capacitance bushings. Low voltage impulse was successful in diagnosing the inter-turn shorts, but unsuccessful in identifying the sources of PDs. During the test condition, the test voltage was adjusted with the presence of artificially created PD sources. The frequency response of the transformer before and after the inception of PD was observed and analyzed in this article. The FRA results demonstrated that the switching impulse voltage based IFRA approach at moderate voltages could be useful in diagnosing the presence of the potential sources of PDs.
Kamalaselvan Arunachalam; Balasubramanian Madanmohan; Rajesh Rajamani; Natarajan Prabaharan; Hassan Haes Alhelou; Pierluigi Siano. Extended Use for the Frequency Response Analysis: Switching Impulse Voltage Based Preliminary Diagnosis of Potential Sources of Partial Discharges in Transformer. Applied Sciences 2020, 10, 8283 .
AMA StyleKamalaselvan Arunachalam, Balasubramanian Madanmohan, Rajesh Rajamani, Natarajan Prabaharan, Hassan Haes Alhelou, Pierluigi Siano. Extended Use for the Frequency Response Analysis: Switching Impulse Voltage Based Preliminary Diagnosis of Potential Sources of Partial Discharges in Transformer. Applied Sciences. 2020; 10 (22):8283.
Chicago/Turabian StyleKamalaselvan Arunachalam; Balasubramanian Madanmohan; Rajesh Rajamani; Natarajan Prabaharan; Hassan Haes Alhelou; Pierluigi Siano. 2020. "Extended Use for the Frequency Response Analysis: Switching Impulse Voltage Based Preliminary Diagnosis of Potential Sources of Partial Discharges in Transformer." Applied Sciences 10, no. 22: 8283.
The substantial increase in new integration of wind power has required changes in grid codes to ensure grid security. Providing low voltage ride through (LVRT) protection helps to sustain the transient conditions without tripping and supports its recovery post‐fault. The grid codes for LVRT capability in countries with substantial wind capacity are surveyed in this paper. The challenges that arise, endangering the grid security due to the non‐implementation of these grid codes in the wind turbines (WT) which were pre‐installed before the mandatory grid code was established is rarely a topic focused in literature. The LVRT capability requirement as per the wind turbine type classification is elucidated. The challenges due to enhancement and upgradation of technology include financial constraints for additional LVRT fittings, planning and renovation. Discussion and prognosis on the challenges provide direction for investigation and research.
Rini Ann Jerin Amalorpavaraj; Prabaharan Natarajan; Mohamed El‐Moursi; Marc A. Rosen; Palanisamy Kaliannan; Umashankar Subramaniam. An outlook on endangering grid security in India due to implementation challenges of low voltage ride through protection in wind turbines. International Transactions on Electrical Energy Systems 2020, 30, 1 .
AMA StyleRini Ann Jerin Amalorpavaraj, Prabaharan Natarajan, Mohamed El‐Moursi, Marc A. Rosen, Palanisamy Kaliannan, Umashankar Subramaniam. An outlook on endangering grid security in India due to implementation challenges of low voltage ride through protection in wind turbines. International Transactions on Electrical Energy Systems. 2020; 30 (12):1.
Chicago/Turabian StyleRini Ann Jerin Amalorpavaraj; Prabaharan Natarajan; Mohamed El‐Moursi; Marc A. Rosen; Palanisamy Kaliannan; Umashankar Subramaniam. 2020. "An outlook on endangering grid security in India due to implementation challenges of low voltage ride through protection in wind turbines." International Transactions on Electrical Energy Systems 30, no. 12: 1.
In this paper, a hybrid PV/diesel/battery-based energy system is designed for supplying power to the residential area being fed with diesel generators during outrage hours. The proposed system is utilized generated power from the standalone PV system along with diesel generator to replace the requirement of diesel by solar energy partially. The optimal hybrid system is obtained by using hourly measured solar radiation data and per liter cost of diesel for the selected location along with other required components. Performance analysis is done using Hybrid Optimization Multiple Energy Resources (HOMER). A comparative study based on percentage renewable penetration, total net present cost (TNPC), cost of energy (COE) and emitted pollutants has been carried out. It is found that the system constitutes of three generators of 50 kW, 50 kW and 10 kW along with a PV array of 64 kW and battery of 53 kW is the optimal solution for the selected site. Sensitivity analysis shows that the proposed system, for a diesel price of 1 $/liter and with solar penetration of 34 %, is more economical and environmental friendly with the COE and TNPC of 0.392 $/kWh and $ 1,042,824 respectively. The presented model can be used in designing optimal energy systems for a similar environment.
M. Saad Bin Arif; Uvais Mustafa; Natarajan Prabaharan; Shahrin Bin Md. Ayob; Javed Ahmad. Performance evaluation of a hybrid solar PV system with reduced emission designed for residential load in subtropical region. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 2020, 1 -23.
AMA StyleM. Saad Bin Arif, Uvais Mustafa, Natarajan Prabaharan, Shahrin Bin Md. Ayob, Javed Ahmad. Performance evaluation of a hybrid solar PV system with reduced emission designed for residential load in subtropical region. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects. 2020; ():1-23.
Chicago/Turabian StyleM. Saad Bin Arif; Uvais Mustafa; Natarajan Prabaharan; Shahrin Bin Md. Ayob; Javed Ahmad. 2020. "Performance evaluation of a hybrid solar PV system with reduced emission designed for residential load in subtropical region." Energy Sources, Part A: Recovery, Utilization, and Environmental Effects , no. : 1-23.
The tremendous growth of big data analysis and IoT (Internet of Things) has made cloud computing an integral part of society. The prominent problem associated with data centers is the growing energy consumption, which results in environmental pollution. Data centers can reduce their carbon emissions through efficient management of server power consumption for a given workload. Dynamic voltage frequency scaling (DVFS) can be applied to control the operating frequencies of the servers based on the workloads assigned to them, as this approach has a cubic increment relationship with power consumption. This research work proposes two DVFS-enabled host selection algorithms for virtual machine (VM) placement with a cluster selection strategy, namely the carbon and power-efficient optimal frequency (C-PEF) algorithm and the carbon-aware first-fit optimal frequency (C-FFF) algorithm.The main aims of the proposed algorithms are to balance the load among the servers and dynamically tune the cooling load based on the current workload. The cluster selection strategy is based on static and dynamic power usage effectiveness (PUE) values and the carbon footprint rate (CFR). The cluster selection is also extended to non-DVFS host selection policies, namely the carbon- and power-efficient (C-PE) algorithm, carbon-aware first-fit (C-FF) algorithm, and carbon-aware first-fit least-empty (C-FFLE) algorithm. The results show that C-FFF achieves 2% more power reduction than C-PEF and C-PE, and demonstrates itself as a power-efficient algorithm for CO2 reduction, retaining the same quality of service (QoS) as its counterparts with lower computational overheads.
T. Renugadevi; K. Geetha; Natarajan Prabaharan; Pierluigi Siano. Carbon-Efficient Virtual Machine Placement Based on Dynamic Voltage Frequency Scaling in Geo-Distributed Cloud Data Centers. Applied Sciences 2020, 10, 2701 .
AMA StyleT. Renugadevi, K. Geetha, Natarajan Prabaharan, Pierluigi Siano. Carbon-Efficient Virtual Machine Placement Based on Dynamic Voltage Frequency Scaling in Geo-Distributed Cloud Data Centers. Applied Sciences. 2020; 10 (8):2701.
Chicago/Turabian StyleT. Renugadevi; K. Geetha; Natarajan Prabaharan; Pierluigi Siano. 2020. "Carbon-Efficient Virtual Machine Placement Based on Dynamic Voltage Frequency Scaling in Geo-Distributed Cloud Data Centers." Applied Sciences 10, no. 8: 2701.
This article presents a new multilevel inverter topology with reduced power switches. The proposed topology composes of several series connection of basic unit for obtaining a required output voltage level. The proposed topology can operate in symmetric condition. The proposed topology is connected in a cascaded structure to produce a higher number of output voltage levels. The proposed cascaded structure is optimized with the minimum number of components for the maximum number of levels. To prove the superiority of the proposed multilevel inverter topology, different technical parameter comparisons are carried out with recently developed multilevel inverter topologies from the literature. The calculation of total standing voltage is examined for the proposed topology. The operation of the proposed topology is tested and verified for nine‐level output voltage. The simulated results are carried out, and it is strengthened by the real‐time prototype results.
M. Jagabar Sathik; N. Prabaharan; S.A.A. Ibrahim; K. Vijaykumar; Frede Blaabjerg. A new generalized switched diode multilevel inverter topology with reduced switch count and voltage on switches. International Journal of Circuit Theory and Applications 2019, 48, 619 -637.
AMA StyleM. Jagabar Sathik, N. Prabaharan, S.A.A. Ibrahim, K. Vijaykumar, Frede Blaabjerg. A new generalized switched diode multilevel inverter topology with reduced switch count and voltage on switches. International Journal of Circuit Theory and Applications. 2019; 48 (4):619-637.
Chicago/Turabian StyleM. Jagabar Sathik; N. Prabaharan; S.A.A. Ibrahim; K. Vijaykumar; Frede Blaabjerg. 2019. "A new generalized switched diode multilevel inverter topology with reduced switch count and voltage on switches." International Journal of Circuit Theory and Applications 48, no. 4: 619-637.
This paper proposes a new multilevel inverter (MLI) topology that utilizes trinary sequence for the dc sources. It gives maximum output voltage level with minimum dc source and switch count when compared to other sequences such as symmetric, natural, binary and quasi-linear. This is due to the fact that the trinary sequence generates of all additive and subtractive combinations of input dc levels in the output voltage waveform. The concept is implemented on a 9-level asymmetric MLI using only four active devices. Multicarrier unipolar pulse width modulation technique is adopted to create the switching pulses. Theoretical calculation of total harmonic distortion in both voltage and current waveforms has been performed using asymptotic time domain formula. These values are compared with simulation and experimental values for different modulation indices. Power loss calculation for proposed topology is discussed with appropriate mathematical equations.
Natarajan Prabaharan; Zainal Salam; Carlo Cecati; Kaliannan Palanisamy. Design and Implementation of New Multilevel Inverter Topology for Trinary Sequence Using Unipolar Pulsewidth Modulation. IEEE Transactions on Industrial Electronics 2019, 67, 3573 -3582.
AMA StyleNatarajan Prabaharan, Zainal Salam, Carlo Cecati, Kaliannan Palanisamy. Design and Implementation of New Multilevel Inverter Topology for Trinary Sequence Using Unipolar Pulsewidth Modulation. IEEE Transactions on Industrial Electronics. 2019; 67 (5):3573-3582.
Chicago/Turabian StyleNatarajan Prabaharan; Zainal Salam; Carlo Cecati; Kaliannan Palanisamy. 2019. "Design and Implementation of New Multilevel Inverter Topology for Trinary Sequence Using Unipolar Pulsewidth Modulation." IEEE Transactions on Industrial Electronics 67, no. 5: 3573-3582.
Polymers are widely used in automotive and aerospace industries for its better strength and easy to design the expected shape and size of parts. To join the two plastic parts, ultrasonic welding is an effective way because of fast and clean process. The present study intends to investigate the weld strength of Ultrasonic Welding (USW) for PC/ABS blend using adaptive neuro-fuzzy inference system (ANFIS). The ANFIS models are utilized for the formulation of mathematical model of USW. All the input parameters are expected to have a significant impact on the weld strength but the most influencing input parameters are pressure, weld time and amplitude are prepared for this study. By comparing the real-time experimental results with the ANFIS predicted results, it is observed that the predicted and experimental models are in accordance with each other. This novel ANFIS model could be further employed for identifying the tensile strength of USW joints in various joining applications. Finally, the SEM images are analyzed to predict the nature of the weld condition.
T. Chinnadurai; S. Saravanan; M. Karthigai Pandian; N. Prabaharan; J. Dhanaselvam. Weld Strength Analysis of Ultrasonic Polymer Welding Using Adaptive Neuro-Fuzzy Inference System. Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020) 2019, 771 -779.
AMA StyleT. Chinnadurai, S. Saravanan, M. Karthigai Pandian, N. Prabaharan, J. Dhanaselvam. Weld Strength Analysis of Ultrasonic Polymer Welding Using Adaptive Neuro-Fuzzy Inference System. Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020). 2019; ():771-779.
Chicago/Turabian StyleT. Chinnadurai; S. Saravanan; M. Karthigai Pandian; N. Prabaharan; J. Dhanaselvam. 2019. "Weld Strength Analysis of Ultrasonic Polymer Welding Using Adaptive Neuro-Fuzzy Inference System." Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020) , no. : 771-779.
This paper proposes a new approach for grid integration of solar photovoltaic system using modified incremental conductance maximum power point tracking algorithm with multi-output converter and multilevel inverter. The multi-output converter is a combination of boost converter and switched capacitor function to generate different self-balanced output voltages using single switch, single inductor, 2N-1 diodes and 2N-1 capacitors. This topology is proposed to be used as DC link in applications where several controlled voltage levels are required with self-balancing and unidirectional current flow, such as photovoltaic (PV) or fuel cell generation systems with multilevel inverter. The utilization of multilevel inverter in the proposed system provides better quality of output voltage and current waveform thereby reducing the size of passive filters. Also, it eliminates the requirement of bulky transformers for grid integration. Multicarrier unipolar phase disposition pulse width modulation technique is employed for triggering the switches of the multilevel inverter. The proposed system is tested with standard test conditions using MATLAB/SIMULINK.
Natarajan Prabaharan; Pietro Elia Campana; Amalorpavaraj Rini Ann Jerin; Kaliannan Palanisamy. A new approach for grid integration of solar photovoltaic system with maximum power point tracking using multi-output converter. Energy Procedia 2019, 159, 521 -526.
AMA StyleNatarajan Prabaharan, Pietro Elia Campana, Amalorpavaraj Rini Ann Jerin, Kaliannan Palanisamy. A new approach for grid integration of solar photovoltaic system with maximum power point tracking using multi-output converter. Energy Procedia. 2019; 159 ():521-526.
Chicago/Turabian StyleNatarajan Prabaharan; Pietro Elia Campana; Amalorpavaraj Rini Ann Jerin; Kaliannan Palanisamy. 2019. "A new approach for grid integration of solar photovoltaic system with maximum power point tracking using multi-output converter." Energy Procedia 159, no. : 521-526.
G. Irusapparajan; D. Periyaazhagar; N. Prabaharan; A. Rini Ann Jerin. Experimental verification of trinary DC source cascaded H-bridge multilevel inverter using unipolar pulse width modulation. Automatika 2019, 60, 19 -27.
AMA StyleG. Irusapparajan, D. Periyaazhagar, N. Prabaharan, A. Rini Ann Jerin. Experimental verification of trinary DC source cascaded H-bridge multilevel inverter using unipolar pulse width modulation. Automatika. 2019; 60 (1):19-27.
Chicago/Turabian StyleG. Irusapparajan; D. Periyaazhagar; N. Prabaharan; A. Rini Ann Jerin. 2019. "Experimental verification of trinary DC source cascaded H-bridge multilevel inverter using unipolar pulse width modulation." Automatika 60, no. 1: 19-27.
Welding is considered as one of the most important process for the manufacturing industries. To be precise, the welding process has a supreme role to play in the automobile industry for fabrication and maintenance. Ultrasonic Welding (USW) is a very commonly used welding procedure in such industries, preferred because of its less processing time and versatility. In this study, three most influencing process parameters that includes welding pressure (P), weld time (Tw), and amplitude (A), are considered to determine the tensile strength of welded PC/ABS blend joints. The welding process is applied on a total of 26 samples and their tensile properties are obtained in terms of experimental results. It is clearly understood that all tensile strength of the joints welded by ultrasonic method is greatly influenced by all three process parameters. Further, with the help of data obtained from the experimentation, an Artificial Neural Network (ANN) based on Back Propagation model has been developed for analyzing the tensile strength of USW joints. By comparing the real time experimental results with the ANN predicted results, it is observed that the predicted and experimental models are in accordance with each other. This novel ANN model could be further employed for identifying the tensile strength of USW joints in various joining applications. Finally, the SEM images are analyzed to predict the nature of the weld condition.
T. Chinnadurai; S. Saravanan; N. Prabaharan; M. Karthigai Pandian; S. Deebika. Analyzing the weld strength of ultrasonic polymer welding using Artificial Neural Networks. Materials Today: Proceedings 2018, 5, 28320 -28327.
AMA StyleT. Chinnadurai, S. Saravanan, N. Prabaharan, M. Karthigai Pandian, S. Deebika. Analyzing the weld strength of ultrasonic polymer welding using Artificial Neural Networks. Materials Today: Proceedings. 2018; 5 (14):28320-28327.
Chicago/Turabian StyleT. Chinnadurai; S. Saravanan; N. Prabaharan; M. Karthigai Pandian; S. Deebika. 2018. "Analyzing the weld strength of ultrasonic polymer welding using Artificial Neural Networks." Materials Today: Proceedings 5, no. 14: 28320-28327.
This paper presents different multi-carrier unipolar trapezoidal pulse width modulation strategies for a reduced switch asymmetrical multilevel inverter. The different strategies are phase disposition, alternative phase opposition and disposition, and carrier overlapping and variable frequency that involve triangular waves as carriers with a unipolar trapezoidal wave as a reference. The reduced switch, asymmetrical multilevel inverter operation was examined for generating the seven-level output voltage using Matlab/Simulink 2009b and the results were verified with a real-time laboratory-based experimental setup using a field-programmable gate array. Different parameter analyses, such as total harmonic distortion, fundamental root mean square voltage, and distortion factor, were analyzed with different modulation indices to investigate the performance of the selected topology. Unipolar trapezoidal pulse width modulation provides a higher root mean square voltage value.
Nataraj Prabaharan; V. Arun; Padmanaban Sanjeevikumar; Lucian Mihet-Popa; Frede Blaabjerg. Reconfiguration of a Multilevel Inverter with Trapezoidal Pulse Width Modulation. Energies 2018, 11, 2148 .
AMA StyleNataraj Prabaharan, V. Arun, Padmanaban Sanjeevikumar, Lucian Mihet-Popa, Frede Blaabjerg. Reconfiguration of a Multilevel Inverter with Trapezoidal Pulse Width Modulation. Energies. 2018; 11 (8):2148.
Chicago/Turabian StyleNataraj Prabaharan; V. Arun; Padmanaban Sanjeevikumar; Lucian Mihet-Popa; Frede Blaabjerg. 2018. "Reconfiguration of a Multilevel Inverter with Trapezoidal Pulse Width Modulation." Energies 11, no. 8: 2148.
Ahmed Al-Durra; Mekhilef Saad Bin Arif; Ujjwal Datta; J. Belwin Edward; Amjed Hina Fathima; Piyali Ganguly; M. Asif Hasan; Jundi Jia; Nallapaneni Manoj Kumar; Jayabal Gayathrimonicka Subarnan; Hasmat Malik; S.M. Muyeen; Ehsan Najafi; Arne Hejde Nielsen; Akhtar Kalam; Kaliannan Palanisamy; Natarajan Prabaharan; Wilson Jasmine Praiselin; Amalorpavaraj Rini Ann Jerin; Peter Rønne-Hansen; Juan Shi; Pierluigi Siano; Mohammad Hasanuzzaman Shawon; Subramaniam Umashankar; Amit Kumar Yadav; Guangya Yang; Aladin Zayegh. List of Contributors. Hybrid-Renewable Energy Systems in Microgrids 2018, 1 .
AMA StyleAhmed Al-Durra, Mekhilef Saad Bin Arif, Ujjwal Datta, J. Belwin Edward, Amjed Hina Fathima, Piyali Ganguly, M. Asif Hasan, Jundi Jia, Nallapaneni Manoj Kumar, Jayabal Gayathrimonicka Subarnan, Hasmat Malik, S.M. Muyeen, Ehsan Najafi, Arne Hejde Nielsen, Akhtar Kalam, Kaliannan Palanisamy, Natarajan Prabaharan, Wilson Jasmine Praiselin, Amalorpavaraj Rini Ann Jerin, Peter Rønne-Hansen, Juan Shi, Pierluigi Siano, Mohammad Hasanuzzaman Shawon, Subramaniam Umashankar, Amit Kumar Yadav, Guangya Yang, Aladin Zayegh. List of Contributors. Hybrid-Renewable Energy Systems in Microgrids. 2018; ():1.
Chicago/Turabian StyleAhmed Al-Durra; Mekhilef Saad Bin Arif; Ujjwal Datta; J. Belwin Edward; Amjed Hina Fathima; Piyali Ganguly; M. Asif Hasan; Jundi Jia; Nallapaneni Manoj Kumar; Jayabal Gayathrimonicka Subarnan; Hasmat Malik; S.M. Muyeen; Ehsan Najafi; Arne Hejde Nielsen; Akhtar Kalam; Kaliannan Palanisamy; Natarajan Prabaharan; Wilson Jasmine Praiselin; Amalorpavaraj Rini Ann Jerin; Peter Rønne-Hansen; Juan Shi; Pierluigi Siano; Mohammad Hasanuzzaman Shawon; Subramaniam Umashankar; Amit Kumar Yadav; Guangya Yang; Aladin Zayegh. 2018. "List of Contributors." Hybrid-Renewable Energy Systems in Microgrids , no. : 1.
Natarajan Prabaharan; Vijayakumar Arun; Thangam Chinnadurai; Kalyanasundaram Arulkumar; Amalorpavaraj Rini Ann Jerin; Kaliannan Palanisamy. Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application. Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application 2018, 1 .
AMA StyleNatarajan Prabaharan, Vijayakumar Arun, Thangam Chinnadurai, Kalyanasundaram Arulkumar, Amalorpavaraj Rini Ann Jerin, Kaliannan Palanisamy. Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application. Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application. 2018; ():1.
Chicago/Turabian StyleNatarajan Prabaharan; Vijayakumar Arun; Thangam Chinnadurai; Kalyanasundaram Arulkumar; Amalorpavaraj Rini Ann Jerin; Kaliannan Palanisamy. 2018. "Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application." Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application , no. : 1.
Natarajan Prabaharan; Vijayakumar Arun; Thangam Chinnadurai; Kalyanasundaram Arulkumar; Amalorpavaraj Rini Ann Jerin; Kaliannan Palanisamy. Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application. Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application 2018, 1 .
AMA StyleNatarajan Prabaharan, Vijayakumar Arun, Thangam Chinnadurai, Kalyanasundaram Arulkumar, Amalorpavaraj Rini Ann Jerin, Kaliannan Palanisamy. Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application. Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application. 2018; ():1.
Chicago/Turabian StyleNatarajan Prabaharan; Vijayakumar Arun; Thangam Chinnadurai; Kalyanasundaram Arulkumar; Amalorpavaraj Rini Ann Jerin; Kaliannan Palanisamy. 2018. "Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application." Analysis of Symmetric Multilevel Inverter Using Unipolar Pulse Width Modulation for Photovoltaic Application , no. : 1.
Automobile industries are focusing toward the reduction in the weight of vehicle that leading to cost reduction and improving the fuel efficiency. Polymers are the main alternatives in conventional engineering materials for automobile components due to their advanced mechanical and thermal properties. This article is mainly focused on the ultrasonic welding of polypropylene and PC-ABS materials followed by thermal analysis of injection-molded and welded specimens. The materials are examined by an advanced analysis method called differential scanning calorimetry. The crystalline nature of the material is changed (area varies from 95.1 to 115.4 J g−1) at injection-molded regions in polypropylene differential scanning calorimetric results. After polypropylene welding, the glass transition temperature values tend to change from 5 to 10 K min−1 heating ranges. In PC-ABS blend, the glass transition temperature is changed from 126.3 to 127.0 °C in the non-welded material. From the welded PC-ABS material results, it is evident that the difference between 5 and 10 K min−1 heating value is only 1.8 °C. Finally, the finite element analysis is carried out to examine the materials deformation pattern with temperature loading.
T. Chinnadurai; N. Prabaharan; N. Mohan Raj; M. Karthigai Pandian. Ultrasonically welded and non-welded polypropylene and PC-ABS blend thermal analysis. Journal of Thermal Analysis and Calorimetry 2018, 132, 1813 -1824.
AMA StyleT. Chinnadurai, N. Prabaharan, N. Mohan Raj, M. Karthigai Pandian. Ultrasonically welded and non-welded polypropylene and PC-ABS blend thermal analysis. Journal of Thermal Analysis and Calorimetry. 2018; 132 (3):1813-1824.
Chicago/Turabian StyleT. Chinnadurai; N. Prabaharan; N. Mohan Raj; M. Karthigai Pandian. 2018. "Ultrasonically welded and non-welded polypropylene and PC-ABS blend thermal analysis." Journal of Thermal Analysis and Calorimetry 132, no. 3: 1813-1824.
Multilevel inverters have found many applications in DG networks, especially photo voltaic (PV) systems. Some of the main advantages of these inverters are their good power quality and the capability of generating higher output voltages from small PV voltage sources. Although, PV panels are usually connected in series to overcome the problem, this solution does not work during partial shading or hot spot in the series panels that will directly affect all the panels output. Multilevel inverters that are used for PV systems should have reduced number of switches to be economic. Moreover, these inverters should only generate low voltage AC output that is approximately 400 V (phase to phase voltage). In this chapter, some of the multilevel inverters that can be used for the PV systems are discussed. Moreover, a leakage current phenomenon in these inverters is explained with some solutions to overcome the problem.
Ehsan Najafi; Natarajan Prabaharan. Multilevel inverters for photovoltaic energy systems in hybrid-renewable energy systems. Hybrid-Renewable Energy Systems in Microgrids 2018, 81 -96.
AMA StyleEhsan Najafi, Natarajan Prabaharan. Multilevel inverters for photovoltaic energy systems in hybrid-renewable energy systems. Hybrid-Renewable Energy Systems in Microgrids. 2018; ():81-96.
Chicago/Turabian StyleEhsan Najafi; Natarajan Prabaharan. 2018. "Multilevel inverters for photovoltaic energy systems in hybrid-renewable energy systems." Hybrid-Renewable Energy Systems in Microgrids , no. : 81-96.