i-manager Publications

i-manager's Journal on Circuits and Systems (JCIR)

Current Issue Vol. 12 Issue 1

Dynamic Simulation and Sensitivity Analysis of Steam Generation Solar Power Plant
Unified Power Quality Conditioner (UPQC) Research Study on Steady - State Power Flow
Photovoltaic Module Failure Detection using Machine Vision and Lazy Learning Technique
Design and Implementation of Wallace Tree Multiplier and Its Applications in FIR Filter
Review on Obstacle Detection in Solar Panel Cleaning Applications

Most Cited

Volume 4 Issue 4 September - November 2016

Research Paper

SRAM Write Operation Using Write Assist Circuit Technique at Low Supply Voltages

A. Pulla Reddy* , G.Sreenivasulu, R. Veerabadra Chary*

* Research Scholar, Department of Electronics and Communication Engineering, SVU College of Engineering, Tirupati, India.

Professor, Department of Electronics and Communication Engineering, SVU College of Engineering, Tirupati, India.

* Senior Manager, Invecas Ltd., India.

Reddy, P. A., Sreenivasulu, G., and chary, R.V. (2016). SRAM Write Operation Using Write Assist Circuit Technique at Low Supply Voltages. i-manager’s Journal on Circuits and Systems, 4(4), 1-5. https://doi.org/10.26634/jcir.4.4.12392

Abstract

The increased effect of process variation and increase in parasitic resistance and capacitance in nano scale technologies at lower supply voltages, and continuous increase in the size of SRAMs require additional techniques, such as write assist and read assist to improve the write-ability, readability, and stability of SRAM memories. The SRAM bit cell write-ability is very critical at lower voltages. The impact of the write assist technique is analysed in this paper which will improve the write-ability of the SRAM memory and also its impact on the performance, power, and area of the chip. The Negative Bit-line Voltage Bias scheme is discussed and executed at the transistor level using conventional SRAM cell (6T). With the write assist circuit, the implemented SRAM bit cell efficiently performs a write operation at lower voltages. The main objective of this paper is to improve the write-ability of the SRAM cell at lower supply voltage using Negative Bit-line Write Assist Circuit.

References

[1]. International Technology Road map for Semiconductors (ITRS-2011), Retrieved from http://www. itrs2.net

[2]. Hooman Farkhani, Ali Peiravi, and Farshad Moradi, (2015). “A new write assist technique for SRAM design in 65 nm CMOS technology”. INTEGRATION, The VLSI Journal, Vol. 50, pp.16-27.

[3]. Chengzhi Jiang, Zuochang Ye, and Yan Wang, (2015). “Near-Threshold SRAM Design with Transient Negative Bit- Line Voltage Scheme”. IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC), pp. 71-74.

[4]. Brian Zimmer, Seng Oon Toh, et al., (2012). “SRAM Assist Techniques for Operation in a Wide Voltage Range in 28- nm CMOS”. IEEE Transactions on Circuits and Systems, Vol. 59, No. 12, pp. 853-857.

[5]. A. Pulla Reddy, G. Sreenivasulu, and R. Veerabadra Chary, (2016). “Write and Read assist techniques for SRAM Memories in Nanometre technology”. International Conference on Recent Trends in Engineering and Material Sciences.

[6]. F. Lai, and C. Lee, (2007). “On-chip voltage down converter to improve SRAM read-write margin and static power for sub-nano CMOS Technology”. IEEE Journal of Solid-State Circuits (JSSC), Vol. 42, No. 9, pp. 2061–2070.

[7]. Harold Pilo, John Barwin, Geordie Braceras, Chistopher Browning, Steve Burns, John Gabric, Steve Lamphier, Mark Miller, Al Roberts, and Fred Towler, (2006). “An SRAM Design in 65 nm and 45 nm Technology Nodes featuring Read and Write-Assist Circuits to expand Operating Voltage”. 2006 Symposium on VLSI Circuits, IBM.

[8]. S. Mukhopadhyay, R. Rao, J. J. Kim, and C. T. Chuang, (2008). “Capacitive Coupling based Transient Negative Bitline Voltage (Tran-NBL) Scheme for improving Write ability of SRAM design in Nanometer Technologies”. VLSI Circuits, 2006. Digest of Technical Papers. 2006 Symposium, IEEE. pp. 15-16.

[9]. A. Bhavnagarwala, X. Tang, and J. Meindl, (2001). “The impact of intrinsic device fluctuations on MOS SRAM cell stability”. IEEE J. Solid-State Circuits, Vol.36, No.4, pp.658–665.

[10]. Kedar Janardan Dhori, Vinay Kumar, and Harsh Rawat, (2014). “Write Assist Circuit to cater Reliability and Floating Bit Line Problem of Negative Bit Line Assist Technique for Single or Multiport Static Random Access Memory”. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, Vol. 22, No. 11, pp. 2350-2356.

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Research Paper

Fuzzy Logic Controller for Three Phase Neutral Point Clamped Inverter with PV System

Romi Choudhary* , A.N. Tiwari**

* PG Scholar, Department of Power Electronic and Drives Engineering from Madan Mohan Malaviya University, Gorakhpur, India.

** Associate Professor, Department of Electrical Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.

Choudhary, R., and Tiwari, A.N. (2016). Fuzzy Logic Controller for Three Phase Neutral Point Clamped Inverter with PV System. i-manager’s Journal on Circuits and Systems, 4(4), 6-11. https://doi.org/10.26634/jcir.4.4.12393

Abstract

The main contribution of the paper is the proposal of Fuzzy Logic Controller (FLC) for three phase transformerless neutral point clamped inverters to eliminate harmonics in photovoltaic systems without requiring any modification on the multilevel inverter or any additional hardware. Multilevel level inverter technology has been widely used in the high power Medium voltage energy control systems [1]. In this paper, the authors have proposed a Fuzzy Logic Controller for three phase neutral point clamped inverter with PV system. They have used the neutral point clamped inverter in this paper because NPC inverter results in the low frequency voltage harmonics in the NP, which is the point between the two DC-link capacitors [7]. In primary side, PV system eliminates the harmonics by using the FLC, and the voltage controller is to produce regulated output voltage with low distortions under all loading conditions. A Fuzzy Logic Controller is developed by using MATLAB/SIMULINK for the chosen inverter having applications in the PV system. FLC is found to have better performance. This paper presents a methodology to generate gating signal to control NPCVSI using MATLAB/SIMULINK.

References

[1]. Marcelo C. Cavalcanti, Alexandre M. Farias, C. Oliveira, Francisco A.S. Neves, and João L. Afonso, (2012). “Eliminating Leakage Currents in Neutral Point Clamped Inverters for Photovoltaic Systems”. IEEE Transactions on Industrial Electronics, Vol. 59, No. 1, pp. 435-443.

[2]. P.T. Stephy, and A. Anbarasan, (2014). “PV System with Neutral Point Clamped Inverter for Suppression of Leakage Current and Harmonics based Fuzzy Controller ”. International Journal of Advanced Engineering Research and Science (IJAERS). Vol. 1, No. 6, pp. 36-41.

[3]. Chennai Salim, and Benchouia Mohamed Toufik, (2014). “Three-level (NPC) Shunt Active Power Filter Performances based on Fuzzy Controller for Harmonic Currents Compensation under Non-Ideal Voltage Conditions”. International Journal on Electrical Engineering and Informatics, Vol. 6, No. 2, pp. 342-358.

[4]. S.B. Kjaer, J.K. Pedersen, and F. Blaabjerg, (2002). “Power inverter topologies for photovoltaic modules – A review”. IEEE Proc. of the 37^th Annual Industry Application Conference (IAS'02), Vol. 2, pp. 782-788.

[5]. R. Skandari, A. Rahmati, A. Abrishamifar, and E. Abiri, (2006). “A Fuzzy Logic Controller for Direct Power Control of PWM Rectifiers with SVM”. IEEE Conf. PEDES’06, pp. 1-5.

[6]. J. Huang, A. Zhang, H. Zhang, and J. Wang, (2011). “A Novel Fuzzy-Based and Voltage-Oriented Direct Power Control Strategy for Rectifier”. IEEE Conf. IECon, pp. 1115- 1119.

[7]. S. Ogasawara, and H. Akagi, (2013). “Analysis of variation of neutral point potential in neutral point clamped voltage source PWM inverters”. Proc. IEEE Industry Appl. Society Annual Meeting IAS, Toronto, Ontario, Canada, pp. 965-970.

[8].Carlo Cecati, Fabrizio Ciancetta, and Pierluigi Siano, (2010). “A Multilevel Inverter for Photovoltaic System with Fuzzy Logic Control”. IEEE Transactions on Industrial Electronics, Vol. 57, No. 12, pp. 4115-4125.

[9]. Poh Chiang Loh, Feng Gao, and Frede Blaabjerg, (2008). “Topological and Modulation Design of Three-Level Z-Source Inverters”. IEEE Transactions on Power Electronics, Vol. 23, No. 5, pp. 2268-2277.

[10]. Ning-Yi Dai, Man-Chung Wong, and Ying- Duo Han, (2006). “Application of a Three-level NPC Inverter as a Three- Phase Four-Wire Power Quality Compensator by Generalized 3DSVM”. IEEE Transactions on Power Electronics, Vol. 21, No. 2, pp. 440-449.

[11]. Azuki Abdul Salam, et al., (2013). “Fuzzy Logic Controller for Photovoltaic Generation System in Islanding Mode Operation”. International Conference on Artificial Intelligence in Computer Science and ICT (AICS 2013), pp. 81-88.

[12]. Y.M. Kazerani, and V. Quintana, (2003). “Modeling, control and implementation of three-phase PWM converters”. IEEE Trans. Power Electron., Vol. 18, No. 3, pp. 857–864.

[13]. Harish Suryanarayana, and Mahesh K. Mishra, (2008). “Fuzzy logic based supervision of DC link PI control in a DSTATCOM”. IEEE India Conference 2008, Vol. 2, pp. 453- 458.

[14]. A. Kocalmis, and S. Sunter, (2006). “Modeling and simulation of multilevel inverter using space vector modulation technique”. 3^rd Int. Conf. on Technical and Physical Problems in Power Engineering (TPE-2006), Ankara, Turkey, pp. 940-943.

[15]. M. Liserre, A. Pigazo, A. Dell'Aquila, and V.M. Moreno, (2006). “An Anti-islanding method for single-phase inverters based on a grid voltage sensorless control”. IEEE Trans. Ind. Electron., Vol. 53, No. 5, pp. 1418–1426.

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Research Paper

Performance Analysis of Wind Energy Conversion System Employing DFIG

G. Pandu Ranga Reddy* , M. Vijaya Kumar**

* Associate Professor, Department of Electrical Engineering, G. Pullaiah College of Engineering and Technology, Kurnool, Andhra Pradesh, India.

** Professor, Department of Electrical Engineering, Jawaharlal Nehru Technological University Anantapur, Anantapuramu, Andhra Pradesh, India.

Reddy, G. P. R., and Kumar, M.V. (2016). Performance Analysis of Wind Energy Conversion System Employing DFIG. i-manager’s Journal on Circuits and Systems, 4(4), 12-18. https://doi.org/10.26634/jcir.4.4.12394

Abstract

In the socio-economic development, the requirement of energy is considered as the most essential element. Renewable energy sources can play an enormous role to fulfill this need of energy. These sources will not only improve independency of energy, but also help in many ways, such as mitigation of climate change, swift development of rural areas, improved health status, and will be the best way to move towards sustainable development. Among all the renewable energy sources, the wind energy plays a key role to reduce fossil fuels dependency and acts as a helpful tool to conflict global warming. Wind energy is indeed a form of solar energy produced by differential heating on the earth surface. Wind's kinetic energy can be captured and converted into electricity via wind turbines. This paper presents the analysis of wind energy conversion system employing DFIG when it is connected to the grid. The Back to Back Voltage Source Converter is used for converting the unregulated generated AC into regulated AC. The sinusoidal pulse width modulation technique is used for generating the control pulses to the converter

References

[1]. Arantxa Tapia, Gerardo Tapia, J. Xabier Ostolaza, and José Ramón Sáenz, (2003). “Modeling and Control of a Wind Turbine Driven Doubly-fed Induction Generator”. IEEE Transactions on Energy Conversion, Vol. 18, No. 2, pp. 194- 204.

[2]. Ahmed G. Abo-Khalil, Dong-Choon Lee, and Se-Hyun Lee, (2006). “Grid Connection of Doubly-fed Induction th Generators in Wind Energy Conversion System”. IEEE 5 International Conference on Power Electronics and Motion Control, Vol. 3, pp. 1-5.

[3]. Shailendra Kumar, and Preeti Jain, (2013). “Analysis of DFIG in wind energy system: A Review”. International Journal of Enhanced Research in Science Technology & Engineering, ISSN: 2319-7463, Vol. 2, No. 6, pp. 69-71.

[4]. Mohsen Rahimi, and Mostafa Parniani, (2010). “Transient performance improvement of Wind Turbines with Doubly-fed Induction Generators using Nonlinear Control Strategy”. IEEE Transactions on Energy Conversion, Vol. 25, No. 2, pp. 514-525.

[5]. Ghennam, T., Berkouk, E.M., and Francois, B. (2009). “Modeling and Control of a Doubly-fed Induction Generator (DFIG) based Wind conversion System”. International Conference on Power Engineering, Energy and Electrical Drives, pp. 507-512.

[6]. El-Sattar, A.A., Saad, N.H., and Shams El-Dein, M.Z (2006). “Modeling and simulation of Doubly-fed Induction Generator variable speed wind turbine”. Power Systems th Conference, MEPCON 2006, 11 International Middle East, Vol. 2, pp. 492-497.

[7]. Ankit Gupta, S.N. Singh, and Dheeraj K. Khatod, (2013). “Modeling and Simulation of Doubly-fed Induction Generator Coupled with Wind Turbine- An Overview”. Journal of Engineering, Computers and Applied Sciences, Vol. 2, No. 8, pp. 45-54.

[8]. J.G. Slootweg, H. Polinder, and W.L. Klin, (2001). “Dynamic Modeling of a Wind Turbine with Doubly Fed Induction Generator”. IEEE Power Engineering Society Summer Meeting, Vol. 1, pp. 644-649.

[9]. Sabir Messalti, Ahmed Gherbi, and Saad Belkhiat, (2013). “Improvement of Power System Transient Stability using Wind Farms based on a Doubly–fed Induction Generation (DFIG)”. Journal on Electrical Engineering, Vol. 13, No. 3, pp. 1-7.

[10]. Parminder Singh, Gagandeep Sharma, and Sushil Prasher, (2013). “Power Control of DFIG using Back to Back Converters (PWM Technique)”. International Journal of Engineering and Innovative Technology, Vol. 3, No. 3, pp. 196-200.

[11]. Lavanya Komma, and Rangavalli Vasa, (2014). “Simulation and comparison of Three Level Inverter using SVPWM & SPWM”. International Journal of Electrical and Electronics Research, Vol. 2, No. 3, pp. 21-30.

[12]. G. Pandu Ranga Reddy, and M. Vijaya Kumar. “Analysis of Wind Energy Conversion System employing DFIG with SPWM and SVPWM type Converters”. Journal of Electrical Engineering, Vol. 15, No. 4, pp. 95-106.

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Research Paper

An Enhancement of power quality by using fuzzy logic controller for typical household applications

A.Purushotham* , Vishnuvardhan**

* PG Scholar, Department of Electrical and Electronics Engineering, Sri Venkateswara College of Engineering and Technology (Autonomous), Andhra Pradesh, India.

** Associate Professor, Department of Electrical and Electronics Engineering, Sri Venkateswara College of Engineering and Technology (Autonomous), Andhra Pradesh, India.

Purushotham, A., and Vishnuvardhan (2016). An Enhancement of power quality by using fuzzy logic controller for typical household’s applications. i-manager’s Journal on Circuits and Systems, 4(4), 19-32. https://doi.org/10.26634/jcir.4.4.12395

Abstract

This paper proposes a transformerless hybrid series active filter which is connected to a single phase distribution feeder. This system uses a sliding mode controller and filtering techniques to reduce voltage and current harmonics for a typical nonlinear load (VSC). The reactive power compensation is done by injecting sag, swell, and distortions at grid side of Point Common Coupling (PCC). In the existing methods to compensate harmonics, PI controllers were to control DC link voltage, there maybe presence of some amount of steady state error and also this PI controller may not work under continuous condition mode. So the authors have opted for Fuzzy Logic Controller (FLC) technique to improve steady state error and the system performance should be improved by reducing the harmonics. Both the existing PI based and fuzzy based controllers’ results are compared and are shown on Matlab/simulink.

References

[1]. B. Singh, A. Chandra, and K. Al-Haddad, (2015). Power Quality Problems and Mitigation Techniques. Chichester, West Sussex, United Kingdom: John Wiley & Sons Inc.

[2]. M. Liserre, T. Sauter, and J.Y. Hung, (2010). “Future Energy Systems: Integrating Renewable Energy Sources into the Smart Power Grid through Industrial Electronics”. IEEE Ind. Electron. Magazine, Vol. 4, No. 1, pp. 18-37.

[3]. L. Jun Young, and C. Hyung Jun, (2014). “6.6 kW Onboard Charger Design using DCM PFC Converter with Harmonic Modulation Technique and Two-Stage DC/DC Converter”. IEEE Trans. Ind. Electron., Vol. 61, No. 3, pp. 1243-1252.

[4]. J. Napoles, A.J. Watson, J.J. Padilla, J.I. Leon, L.G. Franquelo, and P.W. Wheeler, (2013). “Selective Harmonic Mitigation Technique for Cascaded H-Bridge Converters with Nonequal DC Link Voltages”. IEEE Trans. on Ind. Electron., Vol. 60, No. 5, pp. 1963-1971.

[5]. S. Kouro, J.I. Leon, D. Vinnikov, and L.G. Franquelo, (2015). “Grid Connected Photovoltaic Systems: An Overview of Recent Research and emerging PV Converter Technology”. IEEE Ind. Electron. Magazine, Vol. 9, No. 1, pp. 47-61.

[6]. S. Munir, and L. Yun Wei, (2013). “Residential Distribution System Harmonic Compensation using PV Interfacing Inverter”. IEEE Trans. on Smart Grid, Vol. 4, No. 2, pp. 816- 827.

[7]. A.Q. Ansari, B. Singh, and M. Hasan, (2015). “Algorithm for power angle control to improve power quality in distribution system using unified power quality conditioner”. IET Generation, Transmission & Distribution, Vol. 9, No. 12, pp. 1439-1447.

[8]. H. Akagi, (2005). “Active Harmonic Filters”. Proceedings of the IEEE, Vol. 93, No. 12, pp. 2128-2141.

[9]. A. Javadi, and K. Al-Haddad, (2015). “A Single-Phase Active Device for Power Quality Improvement of Electrified Transportation”. IEEE Trans. on Ind. Electron., Vol. 62, No. 5, pp. 3033-3041.

[10]. T. Yi, L. Poh Chiang, W. Peng, C. Fook Hoong, G. Feng, and F. Blaabjerg, (2012). “Generalized Design of High Performance Shunt Active Power Filter with Output LCL Filter”. IEEE Trans. on Ind. Electron., Vol. 59, No. 3, pp. 1443- 1452.

[11]. H. Akagi, and K. Isozaki, (2012). “A Hybrid Active Filter for a Three-Phase 12- Pulse Diode Rectifier used as Frontend of a Medium-Voltage Motor Drive”. IEEE Trans. on Power Electron., Vol. 27, No. 1, pp. 69-77.

[12]. W.R. Nogueira Santos, E.R. Cabral da Silva, C. Brandao Jacobina, E. de Moura Fernandes, A. Cunha Oliveira, and R. Rocha Matias, (2014). “The Transformerless Single-Phase Universal Active Power Filter for Harmonic and Reactive Power Compensation”. IEEE Trans. Power Electron., Vol. 29, No. 7, pp. 3563-3572.

[13]. B.W. Franca, L.F. da Silva, M.A. Aredes, and M. Aredes, (2015). “An Improved iUPQC Controller to provide Additional Grid-Voltage Regulation as a STATCOM”. IEEE Trans. on Ind. Electron., Vol. 62, No. 3, pp. 1345-1352.

[14]. J. Tian, Q. Chen, and B. Xie, (2012). “Series hybrid active power filter based on controllable harmonic impedance”. IET Power Electronics, Vol. 5, No. 1, pp. 142- 148.

[15]. O.S. Senturk, and A.M. Hava, (2011). “Performance Enhancement of the Single-Phase Series Active Filter by employing the Load Voltage Waveform Reconstruction and Line Current Sampling Delay Reduction Methods”. IEEE Trans. Power Electron., Vol. 26, No. 8, pp. 2210-2220.

[16]. A. Varschavsky, J. Dixon, and M. Rotella, (2010). “Cascaded Nine-Level Inverter for Hybrid-Series Active Power Filter using Industrial Controller”. IEEE Trans. Ind. Electron., Vol. 57, No. 8, pp. 2761-2767.

[17]. F.B. Ajaei, S. Afsharnia, A. Kahrobaeian, and S. Farhangi, (2011). “A Fast and Effective Control Scheme for the Dynamic Voltage Restorer”. IEEE Trans. on Power Delivery, Vol. 26, No. 4, pp. 2398-2406.

[18]. T. Jimichi, H. Fujita, and H. Akagi, (2011). “A Dynamic Voltage Restorer Equipped with a High-Frequency Isolated DC Converter”. IEEE Trans. on Industry Applications, Vol. 47, No. 1, pp. 169-175.

[19]. A. Javadi, and K. Al-Haddad, (2014). “A single-phase transformerless active filter with reduced DC-link voltage”. rd In 2014 IEEE 23 Inter. Symp. on Ind. Electron (ISIE), Istanbul, Turkey, pp. 2143-2148.

[20]. H. Akagi, and R. Kondo, (2010). “A Transformerless Hybrid Active Filter using a Three-Level Pulse width Modulation (PWM) Converter for a Medium Voltage Motor Drive”. IEEE Trans. on Power Electron., Vol. 25, No. 6, pp. 1365-1374.

[21]. Y. Lu, G. Xiao, X. Wang, F. Blaabjerg, and D. Lu, (2016). “Control Strategy for Single-Phase Transformerless Three- Leg Unified Power Quality Conditioner based on Space Vector Modulation”. IEEE Trans. on Power Electron., Vol. 31, No. 4, pp. 2840-2849.

[22]. A. Javadi, A. Hamadi, and K. Al-Haddad, (2014). “Stability analysis and effects of dampers on Series active rd compensator”. In 2014 IEEE 23 Inter. Symp. on Ind. Electron (ISIE), Istanbul, Turkey, pp. 2173-2179.

[23]. O.S. Senturk, and A.M. Hava, (2009). “High- Performance Harmonic Isolation and Load Voltage Regulation of the Three-Phase Series Active Filter utilizing the Waveform Reconstruction Method”. IEEE Trans. on Industry Applications, Vol. 45, No. 6, pp. 2030-2038.

[24]. P. Roncero Sanchez, E. Acha, J. E. Ortega-Calderon, V. Feliu, and A. Garcia Cerrada, (2009). “A Versatile Control Scheme for a Dynamic Voltage Restorer for Power-Quality Improvement”. IEEE Trans. on Power Delivery, Vol. 24, No. 1, pp. 277-284.

[25]. J. Barros, and J. Silva, (2010). “Multilevel Optimal Predictive Dynamic Voltage Restorer”. IEEE Trans. Ind. Electron., Vol. 57, No. 8, pp. 2747-2760.

[26]. R. Gupta, A. Ghosh, and A. Joshi, (2011). “Performance Comparison of VSC Based Shunt and Series Compensators used for Load Voltage Control in Distribution Systems”. IEEE Trans. on Power Delivery, Vol. 26, No. 1, pp. 268-278.

[27]. P. Salmeron, and S.P. Litran, (2010). “Improvement of the Electric Power Quality using Series Active and Shunt Passive Filters”. IEEE Trans. on Power Delivery, Vol. 25, No. 2, pp. 1058-1067.

[28]. Z. Amjadi, and S.S. Williamson, (2011). “Modelling, Simulation, and Control of an Advanced Luo Converter for Plug-in Hybrid Electric Vehicle Energy-Storage System”. IEEE Trans. Vehicular Tech., Vol. 60, No. 1, pp. 64-75.

[29]. S. Rahmani, K. Al-Haddad, and H. Kanaan, (2006). “A comparative study of shunt hybrid and shunt active power filters for single-phase applications: Simulation and experimental validation”. Journal of Math. and Comp. in Simulation (IMACS), Elsevier, vol. 71, pp. 345-359.

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Review Paper

Modern Trends in MicroGrids: A Review

G. Manohar* , D.Sreenadh reddy**

* Associate Professor, Department of Electrical and Electronics Engineering, CVR College of Engineering, Hyderabad, India.

** Assistant Professor, Department of Electrical and Electronics Engineering, CVR College of Engineering, Hyderabad, India.

Manohar, G., and Reddy, D.S. (2016). Modern Trends in MicroGrids: A Review. i-manager’s Journal on Circuits and Systems, 4(4), 33-40. https://doi.org/10.26634/jcir.4.4.12396

Abstract

Microgrids provide a powerful solution for enabling the conversion of the electric grid to a more distributed architecture and providing greater flexibility of electricity service to customers. Microgrids are small, independent electric-power grids, including both sources and loads. Microgrids have the capability to connect and disconnect effortlessly from the traditional grid. A microgrid comprises distributed generation, energy storage, loads, and a control system that is capable of operating in grid-tied mode and islanded mode. The concept of microgrid including it's architecture, components, types, mode of operation, various projects, benefits, and the challenges of microgrids have been summarized in this paper.

References

[1]. Katiraei, F., Iravani, R., Hatziargyriou, N., and Dimeas, A. (2008). “Microgrids management”. IEEE Power and Energy Magazine, Vol. 6, No. 3, pp. 54-65.

[2]. Mariam, L., Basu, M., and Conlon, M.F. (2013). “A review of existing microgrid architectures”. Journal of Engineering, Vol. 2013, Article ID 937614.

[3]. Rudresh, B. Magadum, Shobha, and S. Kumbarc, (2012). “A Review of recent developments in microgrid”. International Refereed Journal of Engineering and Science (IRJES), pp. 6-9.

[4]. Siemens, A.C. (2011). “Microgrids White Paper”. Siemens AC, Munich, Germany.

[5]. Aggarwal, V., Fahey, A., Freymiller, H.S., Huang, C.C., Li, S., Moilanen, S., and Wong, J. (2014). Rural EnergyAlternatives in India: Opportunities in Financing and Community Engagement of Renewable Energy Microgrid Project.

[6]. Parhizi, S., Lotfi, H., Khodaei, A., and Bahramirad, S. (2015). “State of the art in research on microgrids: A review”. IEEE Access, Vol. 3, pp. 890-925.

[7]. Yu, H., Luan, W., Sheng, W., Liu, H., and Ma, W. (2015). “Evaluation of the standardization needs of microgrids technology ”. In Electric Utility Deregulation and th Restructuring and Power Technologies (DRPT), 2015 5 International Conference on IEEE, Changsha, pp. 2144- 2148.

[8]. Sabzehgar, R. (2015). “A review of AC/DC microgriddevelopments, technologies, and challenges”. In Green Energy and Systems Conference (IGESC), 2015 IEEE, Long Beach, CA, pp. 11-17.

[9]. Bose, S., Liu, Y., Bahei-Eldin, K., De Bedout, J., and Adamiak, M. (2007). “Tieline controls in microgrid applications”. In Bulk Power System Dynamics and Control- VII. Revitalizing Operational Reliability, 2007 iREP Symposium IEEE, Charleston, SC, pp. 1-9.

[10]. Shamshiri, M., Gan, C.K., and Tan, C.W. (2012). “A review of recent development in smart grid and micro-grid laboratories”. In Power Engineering and Optimization Conference (PEDCO), Melaka, Malaysia, pp. 367-372.

i-manager's Journal on Circuits and Systems (JCIR)

Current Issue Vol. 12 Issue 1

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Volume 4 Issue 4 September - November 2016

SRAM Write Operation Using Write Assist Circuit Technique at Low Supply Voltages

A. Pulla Reddy* , G.Sreenivasulu**, R. Veerabadra Chary***

* Research Scholar, Department of Electronics and Communication Engineering, SVU College of Engineering, Tirupati, India. ** Professor, Department of Electronics and Communication Engineering, SVU College of Engineering, Tirupati, India. *** Senior Manager, Invecas Ltd., India.

Reddy, P. A., Sreenivasulu, G., and chary, R.V. (2016). SRAM Write Operation Using Write Assist Circuit Technique at Low Supply Voltages. i-manager’s Journal on Circuits and Systems, 4(4), 1-5. https://doi.org/10.26634/jcir.4.4.12392

Abstract

References

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Fuzzy Logic Controller for Three Phase Neutral Point Clamped Inverter with PV System

Romi Choudhary* , A.N. Tiwari**

* PG Scholar, Department of Power Electronic and Drives Engineering from Madan Mohan Malaviya University, Gorakhpur, India. ** Associate Professor, Department of Electrical Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.

Choudhary, R., and Tiwari, A.N. (2016). Fuzzy Logic Controller for Three Phase Neutral Point Clamped Inverter with PV System. i-manager’s Journal on Circuits and Systems, 4(4), 6-11. https://doi.org/10.26634/jcir.4.4.12393

Abstract

References

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Performance Analysis of Wind Energy Conversion System Employing DFIG

G. Pandu Ranga Reddy* , M. Vijaya Kumar**

* Associate Professor, Department of Electrical Engineering, G. Pullaiah College of Engineering and Technology, Kurnool, Andhra Pradesh, India. ** Professor, Department of Electrical Engineering, Jawaharlal Nehru Technological University Anantapur, Anantapuramu, Andhra Pradesh, India.

Reddy, G. P. R., and Kumar, M.V. (2016). Performance Analysis of Wind Energy Conversion System Employing DFIG. i-manager’s Journal on Circuits and Systems, 4(4), 12-18. https://doi.org/10.26634/jcir.4.4.12394

Abstract

References

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An Enhancement of power quality by using fuzzy logic controller for typical household applications

A.Purushotham* , Vishnuvardhan**

Purushotham, A., and Vishnuvardhan (2016). An Enhancement of power quality by using fuzzy logic controller for typical household’s applications. i-manager’s Journal on Circuits and Systems, 4(4), 19-32. https://doi.org/10.26634/jcir.4.4.12395

Abstract

References

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Modern Trends in MicroGrids: A Review

G. Manohar* , D.Sreenadh reddy**

* Associate Professor, Department of Electrical and Electronics Engineering, CVR College of Engineering, Hyderabad, India. ** Assistant Professor, Department of Electrical and Electronics Engineering, CVR College of Engineering, Hyderabad, India.

Manohar, G., and Reddy, D.S. (2016). Modern Trends in MicroGrids: A Review. i-manager’s Journal on Circuits and Systems, 4(4), 33-40. https://doi.org/10.26634/jcir.4.4.12396

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A. Pulla Reddy* , G.Sreenivasulu, R. Veerabadra Chary*

* Research Scholar, Department of Electronics and Communication Engineering, SVU College of Engineering, Tirupati, India.

Professor, Department of Electronics and Communication Engineering, SVU College of Engineering, Tirupati, India.

* Senior Manager, Invecas Ltd., India.

* PG Scholar, Department of Power Electronic and Drives Engineering from Madan Mohan Malaviya University, Gorakhpur, India.

** Associate Professor, Department of Electrical Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.

* Associate Professor, Department of Electrical Engineering, G. Pullaiah College of Engineering and Technology, Kurnool, Andhra Pradesh, India.

** Professor, Department of Electrical Engineering, Jawaharlal Nehru Technological University Anantapur, Anantapuramu, Andhra Pradesh, India.

* Associate Professor, Department of Electrical and Electronics Engineering, CVR College of Engineering, Hyderabad, India.

** Assistant Professor, Department of Electrical and Electronics Engineering, CVR College of Engineering, Hyderabad, India.