iosr-JEEE   Volume-14 ~ Issue-3 ~ May-June 2019

Abstract: This paper presents a high order observer based on the sliding mode controller for a suspension active magnetic bearing system (SAMB). The sliding mode surface is constructed by a proportional-integral-derivative (PID) surface. Due to unable to construct the disturbance mathematical model, the measured disturbance are direct feedback and filtered by a proportional-integralgain will be revealed by an observer based on input and output signals. In order to improve the output performance, the lump of the uncertainty is estimated by the sliding mode.........

Keywords: Suspension active magnetic bearing (SAMB), sliding mode control (SMC), high order disturbance observer (HODOB), low-pass-filter, proportional –integral filter gain.

[1]. K. S. Kim,K. H. Rew, and S. H. Kim,"Disturbance observer for estimating higher order disturbances in time series
expansion,"IEEETransactions on Automatic Control, vol. 55, no. 8, pp. 1905-1911, Aug, 2010.
[2]. T. Umeno, and Y. Hori,"Robust speed control of DC servomotors using modern two degrees-of-freedom controller design,"IEEE
Industrial Electronics Society, vol. 38, no. 5, pp. 363-368, Oct, 1991.
[3]. J. Yang, J. Su S. H.Li, and X. H. Yu,"High order mismatched disturbance compensationfor motion control systems via a continuous
dynamic sliding-mode approach,"IEEE Transactions on Industrial Informatics, vol. 10, no. 1, pp. 604-614, Feb, 2014
[4]. J. Y. Su, W. H. Chen, and B. B. Li,"High order disturbance observer design for linear and nonlinear systems,"2015 IEEE
International Conference on Information and Automation, 2015.
[5]. V.Utkin, "Variable structure systems with sliding modes," IEEE Transactions on Automatic Control,vol.22, no. 2, pp.212-222, Apr,
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Abstract: Performance of hybrid electric vehicles (HEVs) in terms of fuel economy and emission depends on the energy management strategy (EMS) which is considered a challenging problem; because HEVs have complex structures. To meet this problem, this paper proposes an EMS for a series hybrid electric vehicle based on Stateflow; in order to reduce system complexity regardless of the individual performance of the selected components. Firstly, mathematical models have been established using MATLAB/Simulink environment for both the driver, the traction battery, the electric motor to be used in vehicle traction, and the genset to charge the battery when its state of charge (SOC) falls below a certain value. Secondly, the proposed EMS based on the selected HEV model has been.........

Keywords: energy management strategy, hybrid electric vehicles, Stateflow, supervisory controller

[1]. F. Qin, G. Xu, Y. Hu, K. Xu, and W. Li, "Stochastic Optimal Control of Parallel Hybrid Electric Vehicles," Energies, vol. 10, no. 2, p. 214, 2017.
[2]. J. Shen and A. Khaligh, "A Supervisory Energy Management Control Strategy in a Battery/Ultracapacitor Hybrid Energy Storage System," IEEE Transactions on Transportation Electrification, vol. 1, no. 3, pp. 223-231, 2015.
[3]. L. Guo, B. Gao, Y. Gao, and H. Chen, "Optimal Energy Management for HEVs in Eco-Driving Applications Using Bi-Level MPC," IEEE Transactions on Intelligent Transportation Systems, vol. 18, no. 8, pp. 2153-2162, 2017.
[4]. V. Puig, R. Costa-Castelló, and J. L. Sampietro, "Economic MPC for the energy management of hybrid vehicles including fuel cells and supercapacitors," in 2016 UKACC 11th International Conference on Control (CONTROL), 2016, pp. 1-6.
[5]. H. S. Ramadan, M. Becherif, and F. Claude, "Energy Management Improvement of Hybrid Electric Vehicles via Combined GPS/Rule-Based Methodology," IEEE Transactions on Automation Science and Engineering, vol. 14, no. 2, pp. 586-597, 2017.

Abstract: This paper presents an over review of power quality in smart grid. Power quality has become the term used to describe a wide range of electrical power origin, monitoring and measurement. Power quality is also a complex subject requiring specific terminology in order to properly describe situations and issues. Understanding and solving problems becomes possible with the correct information and interpretation. An adequate power quality guarantees the necessary compatibility between all equipment connected to the grid. It is therefore an important issue for the successful and efficient operation of existing as well as future grids. One of the properties of electricity is that some of its characteristics depend not only on the electricity producer/distributor but also on the equipment manufacturers and the customer It describes the main phenomena causing degradation in Power Quality (PQ), their origins, the consequences for equipment and the main solutions. It offers a methodology for measuring the PQ in accordance with differing aims.

Keywords: PQ origin, PQ improvement, monitoring, measurement, Future PQ Challenges

[1] Philippe Ferracci ,Cahier Technique Schneider Electric no. 199 / P.2, October 2001
[2] Power Quality in Future Low Voltage Electricity Networks, Technical Note 12 May 2013
[3] Integral Energy Power Quality Centre Technical Note No. 1, ―Understanding Power Quality‖, June 1998.
[4] Baggini, A, (ed) Handbook of Power Quality, Wiley, p.36 , 2008
[5] S.Khalid&BhartiDwivedi―Power Quality Issues, Problems, Standards & Their Effects In Industry With Corrective Means‖ International Journal of Advances in Engineering & Technology, 1 Vol. 1,Issue 2,pp.1-11,May 2011.

Abstract: This study aims to investigate the possibility of supplying electricity from a renewable energy-supplemented hybrid system to Geidam. One of the major rural centers in Yobe state. The town despite having a population of more than 157 thousand people (according to 2006 census), is yet to enjoy its own quota of the national electricity grid due to remoteness and distance from the generating stations available in the country and the environmental condition of the area doesn't allow poles to stay long, this makes transmission to these areas uneconomical. Because of the...........

Keywords: Electricity grid, Feasibility study, Renewable energy, Rural center, Supplemented hybrid

[1]. R. A. A. and A. M. I. M. K. Jalboub A. M. Ihbal H. S. Rajamani, "No Title," in Determination of static voltage stability-margin of the power system prior to voltage collapse.
[2]. A. A. Osinowo, E. C. Okogbue, S. B. Ogungbenro, and O. Fashanu, "Analysis of Global Solar Irradiance over Climatic Zones in Nigeria for Solar Energy Applications," J. Sol. Energy, vol. 2015, pp. 1–9, 2015.
[3]. D. Abdulsalam, I. Mbamali, M. Mamman, and Y. . Saleh, "An Assessment of Solar Radiation Patterns for Sustainable Implementation of Solar Home Systems in Nigeria," Am. Int. J. Contemp. …, vol. 2, no. 6, pp. 238–243, 2012.
[4]. A. O. Adejumo, E. A. Suleiman, and H. I. Okagbue, "Exploration of solar radiation data from three geo-political zones in Nigeria," Data Br., vol. 13, pp. 60–68, 2017.
[5]. R. O. Fagbenle, J. Katende, O. O. Ajayi, and J. O. Okeniyi, "Assessment of wind energy potential of two sites in North-East

Abstract: A microstrip patch antenna is designed for on-body communication in this paper. The designed antenna's performance is evaluated to operate in the Industrial, Scientific and Medical (ISM) band (2.4-2.5 GHz). The antenna's performance parameters such as impressive return loss, miniaturization, higher bandwidth, polarization make it appropriate for on-body application. The performance of the antenna is assessed using a three-layered human phantom environment. To ensure biocompatibility of the antenna, Specific Absorption Rate (SAR) along with bending test are considered using CST Microwave Studio software to check its feasibility in wireless medical applications

Keywords: Biocompatibility, miniaturization, polarization, SAR, return loss.

[1] Al Islam, N., Abrar, A.T., Arafat, U., Islam, A.J. and Hoque, R., 2015, December. Design and performance measurement of an in-body implantable miniaturized Slot Dipole rectangular patch antenna for biomedical applications. In 2015 International Conference on Advances in Electrical Engineering (ICAEE) (pp. 59-63). IEEE. [2] Chakma, N., Farhad, M.M., Islam, A.J., Chakraborty, S., Nesar, M.S.B. and Muktadir, M.A., 2018, December. Performance Analysis of a Microstrip Patch Antenna for Satellite Communications at K Band. In 2018 21st International Conference of Computer and Information Technology (ICCIT) (pp. 1-4). IEEE.
[3] M. M. Farhad, A. J. Islam, S. Chakraborty, M. S. B. Nesar, M. M. Hasan, and M. A. Hossain. Design and performance analysis of a multi-band microstrip patch array antenna at Ku and K band. In 2018 International Conference on Innovations in Science, Engineering and Technology (ICISET), pages 1–6. IEEE.
[4] S. S. Alam, A. J. Islam, M. M. Hasan, and M. M. Farhad. Design and implementation of an embedded system to observe the atmospheric condition using a helium balloon. In 2018 International Conference on Innovations in Science, Engineering and Technology (ICISET), pages 1–6. IEEE, 2018.

[5] Sultana, R., Islam, A.J. and Rahaman, M.A., 2018, November. Design of a Truncated Circular Microstrip Patch Antenna with Slot for GPS Application. In 2018 International Conference on Advancement in Electrical and Electronic Engineering (ICAEEE) (pp. 1-4). IEEE.

Abstract: This paper explores the master-slave synchronization approach using output feedback control with parametric uncertainty. Initially state feedback controller and updation laws are developed using Lyapunov stability theory considering uncertainty in all parameters. Further, output feedback control scheme is proposed by assuming some limited set of parameters as uncertain. Thus, the controller and updation laws are developed that depend only on the output state. Sufficient stability conditions are obtained to ensure chaotic synchronization in master-slave configuration. The validation of proposed technique is depicted using simulations of chaotic Chua's circuit, which belongs to Lur'e class of nonlinear systems.

Keywords: Lyapunov stability, Output feedback control, Parametric uncertainty, Synchronization

[1]. G. Chen, X. Dong, From Chaos to Order: Methodologies, Perspectives and Applications, (World Scientific, Singapore, 1998)
[2]. J.C. Sprott, Chaos and Time-Series Analysis, (Oxford Univ. Press, 2003).
[3]. E. Ott, C. Grebogi, J. A. Yorke, Phys. Rev. Lett. 64 (1990) 1196.
[4]. Y.-Y. Hou, Design and implementation of ep-based pid controller for chaos synchronization of rikitake circuit systems, ISA Transactions, vol. 70, 2017, 260-268.
[5]. A.Mohammadzadeh and S. Ghaemi, Synchronization of chaotic systems and identification of nonlinear systems by using recurrent hierarchical type2 fuzzy neural networks, ISA transactions, vol. 58, 2015, 318–329.

Abstract: Wimax technology (IEEE 802.16) carries with it promising security capabilities compared to its predecessors. The IEEE 802.16 standard has high data rates and bandwidths. WiMAX architecture can transmit up to 40mbps of data over a wireless medium. The wireless transmission carries with it a lot of security threats. In order to protect data exchange between the MAC layer and PHY layer WiMAX specifies a security sub-layer at the bottom of the MAC layer. The security sub-layer provides privacy with SS and BS from service hijacking. For providing authentication, data traffic privacy services and key management a PKM protocol defined by the WiMAX MAC as a sub-layer where the PKM protocol is the main protocol work in the security sub-layer. Security improvements have.........

Key words: IEEE 802.16, WiMAX, Vulnerabilities, Security threats, Diffie Hellman

[1]. Z.You, X.Xie, W.Zheng," Verification and Research of a WiMAX authentication protocol Based on SSM", ICETC, pp. 34-43, 2010.
[2]. E.Yuksel," Analysis of the PKMv2 Protocol in IEEE 802.16e-2005 Using Static Analysis", Technical Paper at University of Denmark, pp. 45-54, Feb 2007.
[3]. Z.You, X.Xie, W.Zheng," Verification and Research of a WiMAX authentication protocol Based on SSM", ICETC, pp. 22-32, 2010.
[4]. H.Tseng, R.Hong, W.Yang,"A chaotic maps-base key agreement protocol that preserves user anonymity", IEEE ICC, vol. 3, pp. 67-70, 2009.
[5]. S.Sidharth, M.P.Sebastian," A Revised Secure Authentication Protocol for IEEE 802.16 (e)", International Conference on Advances in Computer Engineering, pp. 34-42, 2010..

Abstract: The Worldwide Interoperability for Microwave Access (WiMAX) is a new technology which is presently being rolled out. WiMAX defines Privacy Key Management (PKM) protocol in the security sub-layer, which assures the security of connections access in WiMAX channel. PKM protocol has two goals, one is to provide the authorization process and the other is to secure distribution of keying data from the Base Station (BS) to Mobile Station (MS). PKM versions have a security loophole that endangers the network. The network management information is passed in a non-secure environment. The Man-In- The-Middle (MITM) attack exploits this weakness in the network by eavesdropping, interception and fabrication of the management messages, resulting in a breach in the reliability of the entire network. In this paper, a modification of the Diffie-Hellman.......

Keywords: Diffie Hellman, WiMAX, Security, Mutual Authentication

[1]. Z.You, X.Xie, W.Zheng," Verification and Research of a WiMAX authentication protocol Based on SSM", ICETC, pp. 34-43, 2010.
[2]. E.Yuksel," Analysis of the PKMv2 Protocol in IEEE 802.16e-2005 Using Static Analysis", Technical Paper at University of Denmark, pp. 45-54, Feb 2007.
[3]. Z.You, X.Xie, W.Zheng," Verification and Research of a WiMAX authentication protocol Based on SSM", ICETC, pp. 22-32, 2010.
[4]. H.Tseng, R.Hong, W.Yang,"A chaotic maps-base key agreement protocol that preserves user anonymity", IEEE ICC, vol. 3, pp. 67-70, 2009.
[5]. S.Sidharth, M.P.Sebastian," A Revised Secure Authentication Protocol for IEEE 802.16 (e)", International Conference on Advances in Computer Engineering, pp. 34-42, 2010..

Abstract: The over current relays are the major protection devices in a distribution system. This paper presents Gravitational Search Algorithm (GSA) method for coordination of overcurrent relays Nowadays, various programming optimization techniques are frequently used to find optimal relay settings of overcurrentrelays. The overcurrent relay coordination in radial distribution networks is a highly constrained optimization problem. The purpose is to find an optimum relay setting to minimize the time of operation of relays and at the same time, to avoid the mal-operation of relays. This paper presents Gravitational Search Algorithm (GSA) for the coordination of overcurrent relay. Andthe comparison of results obtained from GSA with Particle Swarm Optimization (PSO). A proper combination of primary and backup relay is selected to avoid mal operation of relays. A four bus radial system is simulated in MATLAB SIMULINK platform and programming is done using MATLAB software.

[1]. A. Shrivastava, J. M. Tripati, R. Krishan and S. K. Parida, "Optimal Coordination of Overcurrent Relays using Gravitational Search Algorithm with DG Penetration," IEEE Transactions on Industry Applications, vol 54, no.2, March/April2018.
[2]. P.P Barker, R.W. de Mello, "Determining the impact of distributed generation on power systems part I- radial distribution systems," IEEE Trans. on Power Delivery, vol. 15, pp.486-493,Apr.2000.
[3]. A. Urdaneta, et al, "Optimal Coordination of Directional Overcurrent Relays in Interconnected Power Systems," IEEE Trans. on Power Delivery, vol. 3 , no. 3, pp. 903-911,1988.
[4]. P. P. Bedekar, S. R. Bhide, Vijay S Kale, "Coordination of overcurrent relays in distribution system using Linear Programming Problem," International Conference on Control Automation Communication and Energy Conservation - 2009, 4th-6th June2009.
[5]. ] A. Rathinam, D. Sattianadan, K. Vijayakumar, "Optimal coordination of directional overcurrent relays using particle swarm optimization technique," International Journal of Computer Applications (0975-8887), vol. 10, pp. 43-47,2010.