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i-manager's Journal on Electrical Engineering (JEE)

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Volume 12 Issue 4 April - June 2019

Research Paper

An Investigation On Modelling And Simulation Of Real Lightning Strikes

Hilal Sen* , Cengiz Polat Uzunoglu, Aysel Ersoy Yilmaz*

*-***Department of Electrical & Electronics Engineering, Faculty of Engineering, Istanbul University-Cerrahpasa, Istanbul, Turkey.

Sen , H., Uzunoglu, C., P., & Yilmaz, A., E. (2019). An Investigation On Modelling And Simulation Of Real Lightning Strikes. i-manager’s Journal on Electrical Engineering, 12(4), 1-9. https://doi.org/10.26634/jee.12.4.15833

Abstract

Lightning strikes have great importance in balancing electron distributions of our earth. In this study, it is aimed to model lightning strikes which occur in nature by using two-dimensional investigation. For this purpose, firstly, lightning is simulated in computer environment by using finite element method at different matrix sizes. In the next step a fractal analysis method is used to determine the similarity of the model to the actual lightning. In order to simulate and predict possible pattern of a real lightning the lightning paths investigated and nature of the strike is simulated. According to the simulation results, the fractal dimension averages of the shapes are obtained as 1.32 by using the MATLAB program. On the other hand, real lightning images are processed and average fractal dimension is calculated as 1.23. This results have verified that simulation results and real images results are very close in terms of fractal dimensions. Accordingly, the fractal irregularity of the simulated shapes is slightly more than the actual lightning.

References

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[13]. Gu, Y., Hua, Q., Zhang, C., & He, X. (2019). The generalized finite difference method for long-time transient heat conduction in 3D anisotropic composite materials. Applied Mathematical Modelling, 71, 316-330. https://doi.org/10.1016/j.apm.2019.02.023

[14]. Haris, H. C. M., Rahman, N. F. A., & Salim, N. A. (2018). Selection of suitable features of lightning rods for secure lightning protection. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 10(1-9), 43- 47.

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[23]. Stynes, M., O'Riordan, E., & Gracia, J. L. (2017). Error analysis of a finite difference method on graded meshes for a time-fractional diffusion equation. SIAM Journal on Numerical Analysis, 55(2), 1057-1079. https://doi.org/10. 1137/16M1082329

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[27]. Uzunoglu, C. P. (2017). Continuous over voltage Characteristics of surge protected power strips. imanager's Journal on Circuits & Systems, 5(4), 1-7. https://doi.org/10.26634/jcir.5.4.13938

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Research Paper

Observations of Voltage Breakdown In Ultra-Low Pressure Environments Under Varied Voltage and Frequency Conditions

Ben Oni*

* Department of Electrical and Computer Engineering ,Tuskegee University, Tuskegee, Alabama.

Oni, B. (2019). Observations of Voltage Breakdown In Ultra-Low Pressure Environments Under Varied Voltage and Frequency Conditions. i-manager’s Journal on Electrical Engineering, 12(4), 10-19. https://doi.org/10.26634/jee.12.4.14866

Abstract

Weight is a critical factor in the design of deep space vehicles. Space bound electrical systems can be constructed to weigh less if designed as high voltage, high frequency AC power system. However, high voltage and high frequency power distribution systems have severe limitations in space exploration due to voltage breakdown and electrical discharge phenomena. Paschen law gives the breakdown voltage necessary to start a discharge between two electrodes in gas medium as a function of pressure and gap length. In the traditional experiment to verify Paschen law, pressure in a controlled vacuum chamber is set while a DC voltage across two electrodes is varied. This paper takes the reverse procedure, i.e., AC voltage across electrode gap is set and pressure in the vacuum chamber varied. The intention for this experimental approach is to allow for observation of changes in the voltage across the electrode gap before, during and after voltage breakdown. At Nyquist sampling rate, the result recorded in the experiments is a near continuous graphical chronology of changes and oscillations in voltage across the electrode gap due to electron collision activities between the electrodes.

References

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[9]. Nevrovsky, V. A. (1998, August). Analysis of elementary processes leading to surface flashover in vacuum. In Proceedings ISDEIV. 18^th International Symposium on Discharges and Electrical Insulation in Vacuum (Cat. No. 98CH36073) (Vol. 1, pp. 159-161). IEEE. https://doi.org/10. 1109/DEIV.1998.740598

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[11]. Plessow, R., & Pfeiffer, W. (1994, October). Influence of the frequency on the partial discharge inception voltage. In Proceedings of IEEE Conference on Electrical Insulation and Dielectric Phenomena-(CEIDP'94) (pp. 97-102). IEEE. https://doi.org/10.1109/CEIDP.1994.591699

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Research Paper

Optimal Configuring Of Micro Grid

Mahaboob Shareef Syed * , B. Sreenivasa Raju , Somavarapu Srilatha*

, Department of Electrical and Electronics Engineering, VLITS, Vadlamudi, Guntur, Andhra Pradesh, India.

Department of Electrical and Electronics Engineering, VVIT, Namburu Guntur, Andhra Pradesh, India.

Syed, M., S., Raju, B., S., & Srilatha, S. (2019). Optimal Configuring Of Micro Grid. i-manager’s Journal on Electrical Engineering, 12(4), 20-29. https://doi.org/10.26634/jee.12.4.15991

Abstract

Renewable Energy Sources (RES) are gradually being recognized as an important alternate in supply side planning for micro grids. The objective of the present work is optimal planning, sizing and operation of a hybrid renewable energy based micro grid with the aim of minimizing the lifecycle cost. Two different case studies, diesel-only and diesel-renewable mixed configurations are planned to study. Minimizing the conventional fuel usage and therefore carbon dioxide emission will reduce by maintaining the highest level of reliable power of the micro grid. This is achieved by maximizing the utilization of RES and by minimizing the utility of conventional energy resources. Dispatching and rescheduling the conventional generators at their optimal efficiency operating pointswith the goal of reducing the dependency on the utility grid.HOMER, a hybrid optimization modeling software is used for designing and analyzing the hybrid power systems, which contains a combination of conventional generators, wind turbines, solar photovoltaic, hydropower, batteries, fuel cells and the biomass. The results are compared in terms of the economics, operational performance and environmental emission.

References

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[2]. Givler, T., & Lilienthal, P. (2005). Using HOMER Software, NREL's Micropower Optimization Model, to Explore the Role of Gen-sets in Small Solar Power Systems; Case Study: Sri Lanka (No. NREL/TP-710-36774). National Renewable Energy Lab., Golden, CO (US).

[3]. Hafez, O., & Bhattacharya, K. (2012).Optimal planning and design of a renewable energy-based supply system for micro grids. Elsevier, Renewable Energy, 45(9), 7-15. https://doi.org/10.1016/j.renene.2012.01.087

[4]. Kornelakis, Aris, & Marinakis, Y. (2010). Contribution form optimal sizing of grid-connected PV-systems using PSO. Renewable Energy, 35(6), 33-41. https://doi.org/10. 1016/j.renene.2009.10.014

[5]. Okedu, K., E., & Uhunmwangho, R (2014). Optimization of renewable energy efficiency using HOMER. Energy and Power Engineering, 4(2), 422-427.

[6]. Rousis, A.,O., Tzelepis, D., & Strbac.G. (2018). Design of a hybrid AC/DC microgrid using HOMER Pro: case study on an islanded residential application. Applied Energy, 45 (14).1-14.

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Research Paper

MATLAB Modelling and Simulation of Reconfigurable Solar Converter: A Single-Stage Power Conversion PV-Battery System

Amardeep Potdar* , Pratik Ghutke, Disha Potdar*, Anil Tekale****

* Department of Electrical Engineering, Zeal Polytrchnic, Narhe, Pune, India

Department of Electrical Engineering, Tulsiramji Gaikwad-Patil College of Engineering & Technology, Nagpur,India

* Electrical Engineering, Cusrow Wadia Institute of Technology, Pune, India

**** Department of Electrical Engineering, Parikrama College of Engineering, Kashti, Ahmednagar, Maharashtra, India.

Potdar , A., Ghutke, P., Potdar, D., & Tekale , A., (2019). MATLAB Modelling and Simulation of Reconfigurable Solar Converter: A Single-Stage Power Conversion PV-Battery System. i-manager’s Journal on Electrical Engineering, 12(4), 30-36. https://doi.org/10.26634/jee.12.4.16254

Abstract

Solar energy will be changed by climatic conditions. Photovoltaic solar power generation is very sensitive to shading effect. Output of solar PV cell will be lessen, when a small part of a solar PV array is shaded. For solar photovoltaic systems, energy storage such as batteries and fuel cells has attracted considerably and demand for solar photovoltaic systems with energy storage devices has increased. If solar photovoltaic systems become a constant source of energy, resulting in improvement in solar photovoltaic values as well as performance. This article outlines a new converter called reconfigurable solar converter (RSC) for photovoltaic (PV) cells, especially for utility-scale PV applications. This document also includes MATLAB simulation and its results analysis. The main concept of the new converter is to use a single stage three-phase solar inverter for the DC / AC and DC / DC processes described in this document. This converter solution is attractive for photovoltaic systems with battery backup applications because it reduces the number of conversion stages, thereby increasing efficiency and reducing cost, weight and size. This document is very important for applications that are used to interpret the performance characteristics of the proposed RSC. This document proposes a new topology for the RSC that allows the use of a higher battery voltage than photoelectric voltage. The RSC concept is applied in local consumer optical battery applications. A range of RSC operating modes is suggested for optimal home use. Automatic change between these operating modes is another objective of this document.

References

[1]. Ding, F., Li, P., Huang, B., Gao, F., Ding, C., & Wang, C. (2010, September). Modeling and simulation of grid-connected hybrid photovoltaic/battery distributed generation system. In CICED 2010 Proceedings (pp. 1-10). IEEE. https://doi.org/10.1109/ICECCE.2014.7086636

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[8]. Potdar, D., & Potdar, A. (2019). Electricity generation technology - renewable energy sources. Scholars' Press, East Europe.

[9]. Potdar, D., Potdar, A., S., & Ghutke, P. (2019). Assessment of grid integration impact of photovoltaic system in HD modelling. Journal of Emerging Technologies and Innovative Research (JETIR), 6(5), 182-188.

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[11]. Sasidharan, N., & Singh, J. G. (2017). A novel singlestage single-phase reconfigurable inverter topology for a solar powered hybrid AC/DC home. IEEE Transactions On Industrial Electronics, 64(4). https://doi.org/10.1109 /TIE.2016.2643602.

[12]. Sasidharan, N., Singh, J. G., & Ongsakul, W. (2015). An approach for an efficient hybrid AC/DC solar powered Homegrid system based on the load characteristics of home appliances. Energy and Buildings, 108, 23-35. https://doi.org/10.1016/j.enbuild.2015.08.051

[13]. Von Appen, J., Stetz, T., Braun, M., & Schmiegel, A. (2014). Local voltage control strategies for PV storage systems in distribution grids. IEEE Transactions on Smart Grid, 5(2), 1002-1009. https://doi.org/10.1109/TSG.2013. 2291116

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Research Paper

Demagnetization Diagnosis In Multi-Phase PMSM Machine By Advanced MCSA Technique

Khadim Moin Siddiqui* , S. Chatterji **

* Department of Electrical Engineering, Babu Banarsi Das National Institute of Technology and Management, Lucknow, India.

** Department of Electrical Engineering, NITTTR, Chandigarh, India.

Siddiqui, K., M., Chatterji , S. (2019). Demagnetization Diagnosis In Multi-Phase PMSM Machine By Advanced MCSA Technique. i-manager’s Journal on Electrical Engineering, 12(4), 37-45. https://doi.org/10.26634/jee.12.4.15758

Abstract

In the present time, the multi-phase motor especially five phase Permanent Magnet Synchronous Motor (PMSM) machines are being popular and used in many industrial applications with efficient performance. The main features of this machine are its reliability and excellent dynamic performance. Due to these features, this permanent magnet motor is widely being used in automotive or high power traction systems. However, the possibility of failures during motor operation cannot be denied and further it leads to large revenue losses for industries. In PMSM machines, diagnosis of magnetic demagnetization has been a challenging task for many researchers since last decade. Thus, condition monitoring of this motor for magnetic demagnetization is very essential. Therefore, in this research paper, the magnetic demagnetization of the motor has been diagnosed precisely in the early stages by the advanced Motor Current Signature Analysis (MCSA) technique.

References

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[13]. Sarikhani, A., & Mohammed, O. (2012, September). Real-time demagnetization assessment of PM synchronous machine. In 2012 XXth International Conference on Electrical Machines (pp. 2418-2424). IEEE. https://doi.org/10.1109/ICElMach.2012.6350222

[14]. Siddiqui, K. M., & Chatterji, S. (2018). Early, Demagnetization assessment of PMSM machine by discrete wavelet transform. i-manager's Journal on Circuits & Systems, 6(4), 16. https://doi.org/10.26634/jcir.6.4.15214

[15]. Siddiqui, K. M., Sahay, K., & Giri, V. K. (2014). Health monitoring and fault diagnosis in induction motor-a review, International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, 3(1), 6549- 6565.

[16]. Siddiqui, K. M., Sahay, K., & Giri, V. K. (2017). modeling and open phase fault analysis in three and five phase permanent magnet synchronous motor machine. imanager's Journal on Instrumentation & Control Engineering, 5(4), 32. https://doi.org/10.26634/jic.5. 4.13843

[17]. Siddiqui, K. M., Upadhyay, S. K., Singh, S., Srivastava, R. K., & Babu, R. (2017). Performance and analysis of PWM inverter fed 3-phase PMSM drive. i-manager's Journal on Electronics Engineering, 8(1), 9. https://doi.org/10.26634/ jele.8.1.13835

[18]. Simani, S., Farsoni, S., & Castaldi, P. (2015). Fault diagnosis of a wind turbine benchmark via identified fuzzy models. IEEE Transactions on Industrial Electronics, 6(62), 3775-3782. https://doi.org/10.1109% 2FTIE.2014.2364548

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i-manager's Journal on Electrical Engineering (JEE)

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Volume 12 Issue 4 April - June 2019

An Investigation On Modelling And Simulation Of Real Lightning Strikes

Hilal Sen* , Cengiz Polat Uzunoglu**, Aysel Ersoy Yilmaz***

*-***Department of Electrical & Electronics Engineering, Faculty of Engineering, Istanbul University-Cerrahpasa, Istanbul, Turkey.

Sen , H., Uzunoglu, C., P., & Yilmaz, A., E. (2019). An Investigation On Modelling And Simulation Of Real Lightning Strikes. i-manager’s Journal on Electrical Engineering, 12(4), 1-9. https://doi.org/10.26634/jee.12.4.15833

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Observations of Voltage Breakdown In Ultra-Low Pressure Environments Under Varied Voltage and Frequency Conditions

Ben Oni*

* Department of Electrical and Computer Engineering ,Tuskegee University, Tuskegee, Alabama.

Oni, B. (2019). Observations of Voltage Breakdown In Ultra-Low Pressure Environments Under Varied Voltage and Frequency Conditions. i-manager’s Journal on Electrical Engineering, 12(4), 10-19. https://doi.org/10.26634/jee.12.4.14866

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Optimal Configuring Of Micro Grid

Mahaboob Shareef Syed * , B. Sreenivasa Raju **, Somavarapu Srilatha***

*,*** Department of Electrical and Electronics Engineering, VLITS, Vadlamudi, Guntur, Andhra Pradesh, India. ** Department of Electrical and Electronics Engineering, VVIT, Namburu Guntur, Andhra Pradesh, India.

Syed, M., S., Raju, B., S., & Srilatha, S. (2019). Optimal Configuring Of Micro Grid. i-manager’s Journal on Electrical Engineering, 12(4), 20-29. https://doi.org/10.26634/jee.12.4.15991

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MATLAB Modelling and Simulation of Reconfigurable Solar Converter: A Single-Stage Power Conversion PV-Battery System

Amardeep Potdar* , Pratik Ghutke**, Disha Potdar***, Anil Tekale****

Potdar , A., Ghutke, P., Potdar, D., & Tekale , A., (2019). MATLAB Modelling and Simulation of Reconfigurable Solar Converter: A Single-Stage Power Conversion PV-Battery System. i-manager’s Journal on Electrical Engineering, 12(4), 30-36. https://doi.org/10.26634/jee.12.4.16254

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Demagnetization Diagnosis In Multi-Phase PMSM Machine By Advanced MCSA Technique

Khadim Moin Siddiqui* , S. Chatterji **

* Department of Electrical Engineering, Babu Banarsi Das National Institute of Technology and Management, Lucknow, India. ** Department of Electrical Engineering, NITTTR, Chandigarh, India.

Siddiqui, K., M., Chatterji , S. (2019). Demagnetization Diagnosis In Multi-Phase PMSM Machine By Advanced MCSA Technique. i-manager’s Journal on Electrical Engineering, 12(4), 37-45. https://doi.org/10.26634/jee.12.4.15758

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Hilal Sen* , Cengiz Polat Uzunoglu, Aysel Ersoy Yilmaz*

Mahaboob Shareef Syed * , B. Sreenivasa Raju , Somavarapu Srilatha*

, Department of Electrical and Electronics Engineering, VLITS, Vadlamudi, Guntur, Andhra Pradesh, India.

Department of Electrical and Electronics Engineering, VVIT, Namburu Guntur, Andhra Pradesh, India.

Amardeep Potdar* , Pratik Ghutke, Disha Potdar*, Anil Tekale****

* Department of Electrical Engineering, Babu Banarsi Das National Institute of Technology and Management, Lucknow, India.

** Department of Electrical Engineering, NITTTR, Chandigarh, India.