Log in || Register editor@ijlret.com

Vol. 06, No. 02 [February 2020]

Paper Title :: Dielectric and Mechanical Properties of High Temperature Vulcanized Silicone Rubber Loaded with Nano Zeolite Filler
Author Name :: Shaymaa A. Qenawy || Loai S. Nasrat || Hanafy M. Ismail || Jeannette N. Asaad
Country :: Egypt
Page Number :: 01-07
Silicone rubber (SiR) insulators have several advantagessuch as high electrical insulation and elasticity, temperature resistance and better contamination resistance so it is widely used in insulators for HVDC transmission lines. This paper is focusing on enhancing the electrical properties of HV SiR insulators with respect to mechanical properties by loading micro and nano Zeolite fillers. Samples were prepared by adding micro Zeolite and nano Zeolite into SiR matrix with concentrations of 0%, 10%, 20%, 30% and 40% by weight and with concentrations of 0%, 1%, 3%, 5% and 7% by weight, respectively. The dielectric breakdown strength test has been used to test the electrical performance of SiR composite insulators under various contaminated conditions like dry, wet, low salinity and high salinity. To check various properties of the samples, the tensile strength and elongation at break tests have been applied.
Keywords: Silicone Rubber, Micro and Nano Fillers, Dielectric Strength, Tensile Strength, Elongation at Break, Zeolite Filler
[1] E. A. Cherney, RTV silicone-a high tech solution for a dirty insulator problem. IEEE Electrical Insulation Magazine, Vol. 11, No. 6, 1995, pp. 8-14.
[2] B. Nayak, P. Talwar, A. Mansingh, Dielectric properties of BaTiO3-nylon composites. IEEE 7th Intern. Sympos. Applications of Ferroelectrics, 1991, pp. 334-336.
[3] M. Takeuchi, An experimental study on the effective dielectric constant of heterogeneous media. Proceeding 3rd International Conference Properties and Applications of Dielectric Materials, 1991, pp. 1064-1067.
[4] Tanaka, T., Montanari, G. C., Mülhaupt, R., Polymer nanocomposites as dielectrics and electrical insulation- perspectives for processing technologies, material characterization and future applications. IEEE Transactions on Dielectrics and Electrical Insulation, Vol.11, No. 5, 2004, pp. 763-784.
[5] M. Tariq Nazir, B.T. Phung, Mark Hoffman, Performance of silicone rubber composites with SiO2 micro/nano-filler under AC corona discharge. IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 23, No. 5, 2016, pp. 2804-2815.


Paper Title :: Functions for Reduction of Parabolic Hyperbolic Equations Zenteno – Julia Functions and some applications
Author Name :: M. Sc. Zenteno Jiménez José Roberto
Country :: Mexico
Page Number :: 08-16
The following topic is about the case or cases of reduction of partial differential hyperbolic parabolic equations of linear second order, in the traditional literature there are functions or substitution methods to reduce certain expressions but in many of these cases it is unknown because use a certain function and under what sign some variables remain within the transformation function, here there is only a set of expressions that reduce the equations with a general transformation function, the transformation functions are already known in the literature of differential equations, Emphasis is made only on why these expressions can be used for use.
Keywords: Parabolic - Hyperbolic Partial Differential Equations and Wronskian
[1]. https://www.researchgate.net/publication/325561086_Una_solucion_analitica_para_la_ecuacion_de_difusion_adveccion_reaccion_por_medio_de_la_serie_de_Fourier
[2]. Peter V. O’Neil Matemáticas Avanzadas para Ingeniería, Volumen 2 (1999) Cap. 18, 321-429 in Spanish
[3]. Sánchez Hernández José Darío Elementos de Ecuaciones Diferenciales Parciales (1984), Cap 6.9, 49-50 in Spanish
[4]. General Analytical Solution Unidimensional Advection-Diffusion Reaction Equation Inhomogeneous on a Bounded Domain with an Application in Dispersion of Pollutants http://www.ijlret.com/Papers/Vol-05-issue-02/2.B2019005.pdf
[5]. The convection-diffusion equation with periodic boundary conditions, J. D. Logan, V. ZlotnikAppl. Math. Lett1995


Paper Title :: Overview of low voltage crossing technology in DFIG wind power generation system
Author Name :: Yupeng Ruan || Chuyang Li || Shunyan Li || Yuanlin Ling
Country :: China
Page Number :: 17-20
with the increasing scale of wind power grid connection, the influence of wind farms on the stability of power system becomes more and more significant. The power system has put forward higher requirements on the continuous operation capability of grid-connected wind turbines under voltage sag fault. More and more researches on DFIG instantaneous power grid fault have focused on low-voltage crossing technology. At first, this paper analysis the influence of power grid voltage drop of DFIG operation, puts forward the DFIG wind power system low voltage control objectives through running, summarize and evaluate the DFIG wind power system low voltage through technology, and points out the optimization direction of DFIG wind power system low voltage through technology, show the latest progress and developing trend of the technology, providing a reference for subsequent research and engineering application.
Keywords: DFIG; Grid voltage sag; Low voltage crossing
[1]. Hu jiabing, Sun Dan, He yikang, Zhao rende. Modeling and control of doubly-fed wind generator under grid voltage sag fault [J]. Power system automation, 2006,30 (8):21-26.
[2]. Guan hongliang, Zhao haixiang, Wang weisheng et al. Wind turbine low-voltage crossing function and its application [J]. Journal of electrical engineering, 2007,22 (10):173-177.
[3]. Yang shuying, Zhang xing, Zhang chongwei et al. The electromagnetic transition process of doubly-fed type wind turbine excited by voltage sag [J].Power system automation, 2008,32 (19) : 85-91.
[4]. Cheng mengzeng, Dou zhenlan, Zhang jianwen et al. Transient analysis of doubly-fed induction generator with Crowbar circuit during voltage drop [J]. Power grid and clean energy, 2012,28 (5) : 54-60.


Paper Title :: A Fuzzy Water Level Control and itsImplementation for the STM32 ARM Microcontroller
Author Name :: Ridha Mahjoub || Ali Hmidene
Country :: Tunisia
Page Number :: 21-33
It is very useful for developers and researchers to have at their disposal a hardware platform or a prototype of a real system that is often difficult to access. This equipment is usedto validate the theoretical results obtained because the simulation is not always faithful to the real world. In this paper, we describe the design and realization of a water storage model in which the water level is read and then controlled. The process modelling is found by mathematical equations, by the RLS estimation method and by a neural model. For the retained model and the real process, we apply two approaches of control: The first one is based on the use of an anti-windup PI control, and the second one is based on a fuzzy-PI controller. The control law algorithms are embedded in the STM32 F4-Discovery ARM microcontroller unit to control the water level in the storage model.
Keywords: Design, Realization, Water level, Real process, Neural modelling, ARM microcontroller, PI control, Fuzzy control, Simulation, Implementing.
[1] Reshmi B. “WATER LEVEL CONTROLLER BY FUZZY LOGIC”, International Journal of Innovative research in Advanced Engineering (IJIRAE), Vol. 2, pp. 250-261, 2015.
[2] Nur M.M.S., Munirah M.S, Mohd B. B., Md N. O. and SitiH.J.“Fuzzy Takagi-Sugeno Method in Microcontroller Based Water Tank System”, International Journal of Robotics and Automation (IJRA), pp. 1-7, 2018
[3] Davood M.S.S., Hamidreza A. and Faridoon S. ″Comparative study between tank’s water level control using PID and fuzzy fogic controller”, Advances in Intelligent Systems and Computing, pp. 41-53, 2013.
[4] Ardavan M. ″Implementation of PID Controller by Microcontroller of PIC (18 Series) and Controlling the Height of Liquid in Sources”, Advances in Robotics & Automation, Vol. 5, Issue 3, 2016.
[5] Xin-lan L., Jong-Gyu P., and Hwi-BeomS.“Comparison and Evaluation of Anti-Windup PI Controllers”, Journal of Power Electronics (JPE), Vol.11, No.1, pp. 45-50, 2011.


Paper Title :: Privacy Preservation and Data Legacy
Author Name :: Chris Davison || David Hua || Brady Sheridan || Zach Shimer || Brianna Bowles
Country :: USA
Page Number :: 34-39
Data legacy considerations are often overlooked by consumers. People fail to consider the privacy ramifications and data legacy when allowing their personal consumer activity to be tracked. Groceries purchased with retailer savings cards is an example. Everything bought is recorded in a database, along with any other personal information such as the credit card and personal identifying information. The implications of this transaction raise concern for data legacy, such as how long can this information be held and even used by companies. Individual purchasing behaviors are often aspects people would not want in the public domain, much less for an indefinite period of time.
Keywords: Data legacy, data retention, privacy, privacy preservation.
[1]. Drewry, L. (2016). Crimes without Culprits: Why the European Union Needs Data Retention, and How It Can Be Balanced with the Right to Privacy. Wisconsin International Law Journal, 33(4), 728–754.
[2]. Court Scraps Netherlands’ Data Retention Law. (2015). Information Management Journal, 49(3), 12.
[3]. “Who is protecting my personal info?,”(23 January 2019). PCTouchup Draft. [Online]. Available: https://www.pctouchup.com/post/who-is-protecting-my-personal-info. [Accessed: 25-Feb-2020].
[4]. Bartholomew, A. (2016). The Smart Grid in Massachusetts: A Proposal for a Consumer Data Privacy Policy. Boston College Environmental Affairs Law Review, 43(1), 79–110.
[5]. BBC News (21, March 2018), “How do companies use my loyalty card data?,” [Online]. Available: https://www.bbc.com/news/technology-43483426. [Accessed: 25-Feb-2020].


Copyright © 2015 IJLRET. All Right Reseverd Home   Editorial Board   Current Issue   Contact Us